Introduction
The following are the events for the OpenJDK 21 (jdk-21.0.4+6, 10-July-2024), and Graal VM 23.1.2 (jdk-21.0.2) . The events are collected from the event configuration and the source code. Visit jfreventcollector for more information. this is also the place you can contribute additional event descriptions, if you don't want to contribute them directly to the OpenJDK. The site generator lives on GitHub too.
This page is maintained by Johannes Bechberger of the SapMachine team at SAP and contributors.
Some events have fake end times / durations, these are hidden in the event description here.
Flight Recorder
DumpReason
default profiling startTime 11 17 21 23 24
Category: Flight Recorder
Who requested the recording and why
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| reason | string | Reason Reason for writing recording data to disk |
| recordingId | int | Recording Id Id of the recording that triggered the dump, or -1 if it was not related to a recording |
DataLoss
default profiling startTime 11 17 21 23 24 graal vm
Category: Flight Recorder
Data could not be copied out from a buffer, typically because of contention
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| amount | ulong: bytes | Amount Amount lost data |
| total | ulong: bytes | Total Total lost amount for thread |
Flush
experimental startTime duration 14 17 21 23 24
Category: Flight Recorder
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ns |
| profiling | false | 0 ns |
| Field | Type | Description |
|---|---|---|
| flushId | ulong | Flush Identifier |
| elements | ulong | Elements Written |
| size | ulong: bytes | Size Written |
Examples 3
ActiveRecording
default profiling startTime duration stackTrace 11 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ActiveRecordingEvent.java
Category: Flight Recorder
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| id | long | Id |
| name | string | Name Consider contributing a description to jfreventcollector. |
| destination | string | Destination Consider contributing a description to jfreventcollector. |
| disk | boolean 21+ | To Disk |
| maxAge | long: millis | Max Age |
| flushInterval | long: millis 14+ | Flush Interval |
| maxSize | long: bytes | Max Size |
| recordingStart | long: epochmillis | Start Time |
| recordingDuration | long: millis | Recording Duration |
Examples 3
| destination | string | [...]/code/experiments/jfreventcollector/jfr/sample_UseParallelGC.jfr
|
|---|---|---|
| disk | boolean | true
|
| flushInterval | long: millis | 1000
|
| id | long | 1
|
| maxAge | long: millis | 9223372036854775807
|
| maxSize | long: bytes | 262144000
|
| name | string | 1
|
| recordingDuration | long: millis | 9223372036854775807
|
| recordingStart | long: epochmillis | 1702899886817
|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 60342722167
|
| destination | string | [...]/code/experiments/jfreventcollector/jfr/sample_UseSerialGC.jfr
|
|---|---|---|
| disk | boolean | true
|
| flushInterval | long: millis | 1000
|
| id | long | 1
|
| maxAge | long: millis | 9223372036854775807
|
| maxSize | long: bytes | 262144000
|
| name | string | 1
|
| recordingDuration | long: millis | 9223372036854775807
|
| recordingStart | long: epochmillis | 1702899981921
|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 15735901042
|
| destination | string | [...]/code/experiments/jfreventcollector/jfr/sample_UseG1GC.jfr
|
|---|---|---|
| disk | boolean | true
|
| flushInterval | long: millis | 1000
|
| id | long | 1
|
| maxAge | long: millis | 9223372036854775807
|
| maxSize | long: bytes | 262144000
|
| name | string | 1
|
| recordingDuration | long: millis | 9223372036854775807
|
| recordingStart | long: epochmillis | 1702902685041
|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 12854214084
|
ActiveSetting
default profiling startTime duration stackTrace 11 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ActiveSettingEvent.java
Category: Flight Recorder
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| id | long | Event Id |
| name | string | Setting Name |
| value | string | Setting Value |
Examples 3
JVM
JVMInformation
default profiling startTime duration end of every chunk 11 17 21 23 24 graal vm
Category: Java Virtual Machine
Description of JVM and the Java application
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| jvmName | string | JVM Name |
| jvmVersion | string | JVM Version |
| jvmArguments | string | JVM Command Line Arguments |
| jvmFlags | string | JVM Settings File Arguments |
| javaArguments | string | Java Application Arguments |
| jvmStartTime | long: epochmillis | JVM Start Time |
| pid | long | Process Identifier |
Examples 3
| javaArguments | string | [...]/code/experiments/jfreventcollector/.cache/renaissance.jar -t 5 -r 1 all
|
|---|---|---|
| jvmArguments | string | -XX:StartFlightRecording=filename=[...]/code/experiments/jfreventcollector/jfr/sample_UseSerialGC.jfr,settings=[...]/code/experiments/jfreventcollector/.cache/jfc.jfc -XX:+UseSerialGC
|
| jvmFlags | string | null
|
| jvmName | string | OpenJDK 64-Bit Server VM
|
| jvmStartTime | long: epochmillis | 1702899981604
|
| jvmVersion | string | OpenJDK 64-Bit Server VM (21.0.1+12-LTS) for bsd-aarch64 JRE (21.0.1+12-LTS), built on 2023-10-17T00:00:00Z by "admin" with clang Apple LLVM 12.0.0 (clang-1200.0.32.29)
|
| pid | long | 14273
|
| startTime | long: millis | 75961227292
|
| javaArguments | string | [...]/code/experiments/jfreventcollector/.cache/renaissance.jar -t 5 -r 1 all
|
|---|---|---|
| jvmArguments | string | -XX:StartFlightRecording=filename=[...]/code/experiments/jfreventcollector/jfr/sample_UseG1GC.jfr,settings=[...]/code/experiments/jfreventcollector/.cache/jfc.jfc -XX:+UseG1GC
|
| jvmFlags | string | null
|
| jvmName | string | OpenJDK 64-Bit Server VM
|
| jvmStartTime | long: epochmillis | 1702902684442
|
| jvmVersion | string | OpenJDK 64-Bit Server VM (21.0.1+12-LTS) for bsd-aarch64 JRE (21.0.1+12-LTS), built on 2023-10-17T00:00:00Z by "admin" with clang Apple LLVM 12.0.0 (clang-1200.0.32.29)
|
| pid | long | 21922
|
| startTime | long: millis | 22148519000
|
| javaArguments | string | [...]/code/experiments/jfreventcollector/.cache/renaissance.jar -t 5 -r 1 all
|
|---|---|---|
| jvmArguments | string | -XX:StartFlightRecording=filename=[...]/code/experiments/jfreventcollector/jfr/sample_UseParallelGC.jfr,settings=[...]/code/experiments/jfreventcollector/.cache/jfc.jfc -XX:+UseParallelGC
|
| jvmFlags | string | null
|
| jvmName | string | OpenJDK 64-Bit Server VM
|
| jvmStartTime | long: epochmillis | 1702899886436
|
| jvmVersion | string | OpenJDK 64-Bit Server VM (21.0.1+12-LTS) for bsd-aarch64 JRE (21.0.1+12-LTS), built on 2023-10-17T00:00:00Z by "admin" with clang Apple LLVM 12.0.0 (clang-1200.0.32.29)
|
| pid | long | 13981
|
| startTime | long: millis | 78940150083
|
InitialSystemProperty
JVM: Class Loading
ClassLoad
startTime duration eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | false | true | 0 ms |
| profiling | false | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| loadedClass | Class | Loaded Class Consider contributing a description to jfreventcollector. |
| definingClassLoader | ClassLoader | Defining Class Loader Consider contributing a description to jfreventcollector. |
| initiatingClassLoader | ClassLoader | Initiating Class Loader Consider contributing a description to jfreventcollector. |
Examples 3
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | bootstrap
|
| type | Class | null
|
| initiatingClassLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| loadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/util/logging/Level$KnownLevel
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.logging
|
| name | string | java.logging
|
| version | string | 21.0.1
|
| name | string | java/util/logging
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 55
|
| lineNumber | int | 248
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;ILjava/lang/String;Z)V
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/logging/Level
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.logging
|
| name | string | java.logging
|
| version | string | 21.0.1
|
| name | string | java/util/logging
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 450630083
|
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | bootstrap
|
| type | Class | null
|
| initiatingClassLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| loadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | jdk/internal/misc/MainMethodFinder
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 3
|
| lineNumber | int | 874
|
| method | Method | |
| descriptor | string | (Ljava/lang/Class;)V
|
| hidden | boolean | false
|
| modifiers | int | 8
|
| name | string | validateMainClass
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | sun/launcher/LauncherHelper
|
| package | Package | |
| exported | boolean | false
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/launcher
|
| type | FrameType | Interpreted
|
| truncated | boolean | false
|
| startTime | long: millis | 389713125
|
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | bootstrap
|
| type | Class | null
|
| initiatingClassLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| loadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Object
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 711032959
|
ClassDefine
startTime eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| definedClass | Class | Defined Class Consider contributing a description to jfreventcollector. |
| definingClassLoader | ClassLoader | Defining Class Loader Consider contributing a description to jfreventcollector. |
Examples 3
| definedClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/util/logging/Level$KnownLevel
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.logging
|
| name | string | java.logging
|
| version | string | 21.0.1
|
| name | string | java/util/logging
|
| definingClassLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 55
|
| lineNumber | int | 248
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;ILjava/lang/String;Z)V
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/logging/Level
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.logging
|
| name | string | java.logging
|
| version | string | 21.0.1
|
| name | string | java/util/logging
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 450712542
|
| definedClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/security/SecureClassLoader$1
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| definingClassLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 20
|
| lineNumber | int | 222
|
| method | Method | |
| descriptor | string | (Ljava/security/CodeSource;)Ljava/security/ProtectionDomain;
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | getProtectionDomain
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/security/SecureClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 710545834
|
| definedClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/util/jar/Manifest$FastInputStream
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/jar
|
| definingClassLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | 287
|
| method | Method | |
| descriptor | string | (Ljava/io/InputStream;Ljava/lang/String;)V
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/jar/Manifest
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/jar
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 380962583
|
ClassRedefinition
default profiling startTime 15 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| redefinedClass | Class | Redefined Class Consider contributing a description to jfreventcollector. |
| classModificationCount | int | Class Modification Count The number of times the class has changed |
| redefinitionId | ulong | Class Redefinition Id |
RedefineClasses
default profiling startTime duration eventThread stackTrace 15 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 0 ms |
| profiling | true | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| classCount | int | Class Count |
| redefinitionId | ulong | Class Redefinition Id |
RetransformClasses
default profiling startTime duration eventThread stackTrace 15 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 0 ms |
| profiling | true | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| classCount | int | Class Count |
| redefinitionId | ulong | Class Redefinition Id |
ClassUnload
startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / Class Loading
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| unloadedClass | Class | Unloaded Class Consider contributing a description to jfreventcollector. |
| definingClassLoader | ClassLoader | Defining Class Loader Consider contributing a description to jfreventcollector. |
Examples 3
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| startTime | long: millis | 5993917625
|
| unloadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | org/apache/spark/storage/DefaultTopologyMapper
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | org/apache/spark/storage
|
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| startTime | long: millis | 3889390167
|
| unloadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | true
|
| modifiers | int | 4144
|
| name | string | org.apache.spark.internal.config.ConfigBuilder$$Lambda+0x00000008003736d0/178325065
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | org/apache/spark/internal/config
|
| definingClassLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| startTime | long: millis | 4558796000
|
| unloadedClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | org/sparkproject/guava/base/Joiner$2
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | org/sparkproject/guava/base
|
JVM: Code Cache
CodeCacheFull
default profiling startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / Code Cache
A code heap is full, this leads to disabling the compiler
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| codeBlobType | CodeBlobType | Code Heap Consider contributing a description to jfreventcollector. |
| startAddress | ulong: address | Start Address |
| commitedTopAddress | ulong: address | Commited Top |
| reservedTopAddress | ulong: address | Reserved Top |
| entryCount | int | Entries |
| methodCount | int | Methods |
| adaptorCount | int | Adaptors |
| unallocatedCapacity | ulong: bytes | Unallocated |
| fullCount | int | Full Count |
| codeCacheMaxCapacity | ulong: bytes 17+ | Code Cache Maximum Capacity |
CodeCacheStatistics
default profiling startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / Code Cache
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| codeBlobType | CodeBlobType | Code Heap Consider contributing a description to jfreventcollector. |
| startAddress | ulong: address | Start Address |
| reservedTopAddress | ulong: address | Reserved Top |
| entryCount | int | Entries |
| methodCount | int | Methods |
| adaptorCount | int | Adaptors |
| unallocatedCapacity | ulong: bytes | Unallocated |
| fullCount | int | Full Count |
Examples 3
CodeCacheConfiguration
default profiling startTime end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Code Cache
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| initialSize | ulong: bytes | Initial Size |
| reservedSize | ulong: bytes | Reserved Size |
| nonNMethodSize | ulong: bytes | Non-nmethod Size |
| profiledSize | ulong: bytes | Profiled Size |
| nonProfiledSize | ulong: bytes | Non-profiled Size |
| expansionSize | ulong: bytes | Expansion size |
| minBlockLength | ulong: bytes | Minimum Block Length |
| startAddress | ulong: address | Start Address |
| reservedTopAddress | ulong: address | Reserved Top |
Examples 3
| expansionSize | ulong: bytes | 65536
|
|---|---|---|
| initialSize | ulong: bytes | 2555904
|
| minBlockLength | ulong: bytes | 6
|
| nonNMethodSize | ulong: bytes | 5839564
|
| nonProfiledSize | ulong: bytes | 122909338
|
| profiledSize | ulong: bytes | 122909338
|
| reservedSize | ulong: bytes | 251658240
|
| reservedTopAddress | ulong: address | 4733009920
|
| startAddress | ulong: address | 4481351680
|
| startTime | long: millis | 30519908542
|
| expansionSize | ulong: bytes | 65536
|
|---|---|---|
| initialSize | ulong: bytes | 2555904
|
| minBlockLength | ulong: bytes | 6
|
| nonNMethodSize | ulong: bytes | 5839564
|
| nonProfiledSize | ulong: bytes | 122909338
|
| profiledSize | ulong: bytes | 122909338
|
| reservedSize | ulong: bytes | 251658240
|
| reservedTopAddress | ulong: address | 4771921920
|
| startAddress | ulong: address | 4520263680
|
| startTime | long: millis | 75173615667
|
| expansionSize | ulong: bytes | 65536
|
|---|---|---|
| initialSize | ulong: bytes | 2555904
|
| minBlockLength | ulong: bytes | 6
|
| nonNMethodSize | ulong: bytes | 5839564
|
| nonProfiledSize | ulong: bytes | 122909338
|
| profiledSize | ulong: bytes | 122909338
|
| reservedSize | ulong: bytes | 251658240
|
| reservedTopAddress | ulong: address | 5217714176
|
| startAddress | ulong: address | 4966055936
|
| startTime | long: millis | 60345400708
|
JVM: Compiler
JITRestart
default profiling startTime eventThread 17 21 23 24
Category: Java Virtual Machine / Compiler
Restart of the JIT compilers after they were stopped
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| freedMemory | ulong: bytes | Freed Memory |
| codeCacheMaxCapacity | ulong: bytes | Code Cache Maximum Capacity |
Compilation
default profiling startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / Compiler
Results of method compilation attempts
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 100 ms |
| Field | Type | Description |
|---|---|---|
| compileId | int | Compilation Identifier |
| compiler | CompilerType 14+ | Compiler Consider contributing a description to jfreventcollector. |
| method | Method | Method Consider contributing a description to jfreventcollector. |
| compileLevel | ushort | Compilation Level |
| succeded | boolean | Succeeded |
| isOsr | boolean | On Stack Replacement |
| codeSize | ulong: bytes | Compiled Code Size |
| inlinedBytes | ulong: bytes | Inlined Code Size |
Examples 3
| codeSize | ulong: bytes | 14024
|
|---|---|---|
| compileId | int | 5990
|
| compileLevel | ushort | 4
|
| compiler | CompilerType | c2
|
| inlinedBytes | ulong: bytes | 4704
|
| isOsr | boolean | false
|
| method | Method | |
| descriptor | string | (Lakka/actor/ActorSystem;Lakka/actor/ActorRef;Lakka/actor/ActorRef;IIIZ)Lakka/actor/ActorRef;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | createNodeActor
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/benchmarks/uct/UctAkkaActorBenchmark$NodeActor$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/benchmarks/uct
|
| startTime | long: millis | 14495323625
|
| succeded | boolean | true
|
| codeSize | ulong: bytes | 41416
|
|---|---|---|
| compileId | int | 14551
|
| compileLevel | ushort | 4
|
| compiler | CompilerType | c2
|
| inlinedBytes | ulong: bytes | 5819
|
| isOsr | boolean | false
|
| method | Method | |
| descriptor | string | (Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Object;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | channelRead
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | com/twitter/finagle/netty4/http/handler/UnpoolHttpHandler$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | com/twitter/finagle/netty4/http/handler
|
| startTime | long: millis | 29724714292
|
| succeded | boolean | true
|
| codeSize | ulong: bytes | 6040
|
|---|---|---|
| compileId | int | 13924
|
| compileLevel | ushort | 4
|
| compiler | CompilerType | c2
|
| inlinedBytes | ulong: bytes | 508
|
| isOsr | boolean | false
|
| method | Method | |
| descriptor | string | (Lio/netty/handler/codec/http2/DefaultHttp2Connection$DefaultStream;)V
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | addToActiveStreams
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | io/netty/handler/codec/http2/DefaultHttp2Connection$ActiveStreams
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | io/netty/handler/codec/http2
|
| startTime | long: millis | 42711440292
|
| succeded | boolean | true
|
CompilerPhase
default profiling startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / Compiler
Describes various phases of the compilation process like inlining or string optimization related phases
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 60 s |
| profiling | true | 10 s |
| Field | Type | Description |
|---|---|---|
| phase | CompilerPhaseType | Compile Phase |
| compileId | int | Compilation Identifier |
| phaseLevel | ushort | Phase Level |
CompilationFailure
profiling startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / Compiler
In case a JIT compilation failed, a compilation failure is triggered, reporting the reason
| Configuration | enabled |
|---|---|
| default | false |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| failureMessage | string | Failure Message |
| compileId | int | Compilation Identifier |
Examples 3
CompilerInlining
startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / Compiler / Optimization
Describes the result of a method inlining attempt
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| compileId | int | Compilation Identifier |
| caller | Method | Caller Method |
| callee | CalleeMethod struct | Callee Method |
| succeeded | boolean | Succeeded |
| message | string | Message |
| bci | int | Bytecode Index |
Examples 3
| bci | int | 5
|
|---|---|---|
| callee | CalleeMethod | |
| descriptor | string | (II)I
|
| name | string | checkIndex
|
| type | string | java/util/Objects
|
| caller | Method | |
| descriptor | string | (I)Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | get
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/ArrayList
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| compileId | int | 1468
|
| message | string | force inline by annotation
|
| startTime | long: millis | 413309958
|
| succeeded | boolean | true
|
| bci | int | 128
|
|---|---|---|
| callee | CalleeMethod | |
| descriptor | string | (B)V
|
| name | string | putUncheckedByte
|
| type | string | jdk/jfr/internal/event/EventWriter
|
| caller | Method | |
| descriptor | string | (J)V
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | putUncheckedLong
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/jfr/internal/event/EventWriter
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/jdk.jfr
|
| name | string | jdk.jfr
|
| version | string | 21.0.1
|
| name | string | jdk/jfr/internal/event
|
| compileId | int | 1446
|
| message | string | callee uses too much stack
|
| startTime | long: millis | 361741083
|
| succeeded | boolean | false
|
| bci | int | 4
|
|---|---|---|
| callee | CalleeMethod | |
| descriptor | string | (Ljava/lang/Object;JB)V
|
| name | string | putByte
|
| type | string | jdk/internal/misc/Unsafe
|
| caller | Method | |
| descriptor | string | (JB)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | putByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| compileId | int | 1490
|
| message | string | intrinsic
|
| startTime | long: millis | 671074584
|
| succeeded | boolean | true
|
Deoptimization
default profiling startTime eventThread stackTrace 14 17 21 23 24
Category: Java Virtual Machine / Compiler
Describes the detection of an uncommon situation in a compiled method which may lead to deoptimization of the method
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | false |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| compileId | int | Compilation Identifier |
| compiler | CompilerType | Compiler Consider contributing a description to jfreventcollector. |
| method | Method | Method Consider contributing a description to jfreventcollector. |
| lineNumber | int | Line Number |
| bci | int | Bytecode Index |
| instruction | Bytecode | Instruction Consider contributing a description to jfreventcollector. |
| reason | DeoptimizationReason | Reason Consider contributing a description to jfreventcollector. |
| action | DeoptimizationAction | Action Consider contributing a description to jfreventcollector. |
Examples 3
| action | DeoptimizationAction | reinterpret
|
|---|---|---|
| bci | int | 29
|
| compileId | int | 3712
|
| compiler | CompilerType | c2
|
| instruction | Bytecode | iflt
|
| lineNumber | int | 991
|
| method | Method | |
| descriptor | string | ([B[B[B[B)I
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | match
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/jar/JarFile
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/jar
|
| reason | DeoptimizationReason | unstable_if
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 29
|
| lineNumber | int | 991
|
| method | Method | |
| descriptor | string | ([B[B[B[B)I
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | match
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/jar/JarFile
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/jar
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 5574595334
|
| action | DeoptimizationAction | maybe_recompile
|
|---|---|---|
| bci | int | 2
|
| compileId | int | 2991
|
| compiler | CompilerType | c2
|
| instruction | Bytecode | invokeinterface
|
| lineNumber | int | 5818
|
| method | Method | |
| descriptor | string | (Ljava/util/regex/Pattern$CharPredicate;I)Z
|
| hidden | boolean | false
|
| modifiers | int | 4106
|
| name | string | lambda$negate$7
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Pattern
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| reason | DeoptimizationReason | class_check
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 2
|
| lineNumber | int | 5818
|
| method | Method | |
| descriptor | string | (Ljava/util/regex/Pattern$CharPredicate;I)Z
|
| hidden | boolean | false
|
| modifiers | int | 4106
|
| name | string | lambda$negate$7
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Pattern
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 4293578333
|
| action | DeoptimizationAction | maybe_recompile
|
|---|---|---|
| bci | int | 51
|
| compileId | int | 2504
|
| compiler | CompilerType | c2
|
| instruction | Bytecode | invokevirtual
|
| lineNumber | int | 1380
|
| method | Method | |
| descriptor | string | (Ljava/lang/Class;I)Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | allocateUninitializedArray
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| reason | DeoptimizationReason | class_check
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 51
|
| lineNumber | int | 1380
|
| method | Method | |
| descriptor | string | (Ljava/lang/Class;I)Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | allocateUninitializedArray
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 878824667
|
CompilerStatistics
default profiling startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / Compiler
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| compileCount | int | Compiled Methods |
| bailoutCount | int | Bailouts |
| invalidatedCount | int | Invalidated Compilations |
| osrCompileCount | int | OSR Compilations |
| standardCompileCount | int | Standard Compilations |
| osrBytesCompiled | ulong: bytes | OSR Bytes Compiled |
| standardBytesCompiled | ulong: bytes | Standard Bytes Compiled |
| nmethodsSize | ulong: bytes | Compilation Resulting Size |
| nmethodCodeSize | ulong: bytes | Compilation Resulting Code Size |
| peakTimeSpent | long: millis | Peak Time |
| totalTimeSpent | long: millis | Total time |
Examples 3
| bailoutCount | int | 2
|
|---|---|---|
| compileCount | int | 14568
|
| invalidatedCount | int | 0
|
| nmethodCodeSize | ulong: bytes | 17322832
|
| nmethodsSize | ulong: bytes | 26684784
|
| osrBytesCompiled | ulong: bytes | 0
|
| osrCompileCount | int | 100
|
| peakTimeSpent | long: millis | 1099
|
| standardBytesCompiled | ulong: bytes | 0
|
| standardCompileCount | int | 14468
|
| startTime | long: millis | 49333195542
|
| totalTimeSpent | long: millis | 43083
|
| bailoutCount | int | 5
|
|---|---|---|
| compileCount | int | 32065
|
| invalidatedCount | int | 0
|
| nmethodCodeSize | ulong: bytes | 46567696
|
| nmethodsSize | ulong: bytes | 69427336
|
| osrBytesCompiled | ulong: bytes | 0
|
| osrCompileCount | int | 231
|
| peakTimeSpent | long: millis | 1103
|
| standardBytesCompiled | ulong: bytes | 0
|
| standardCompileCount | int | 31834
|
| startTime | long: millis | 64159907917
|
| totalTimeSpent | long: millis | 76589
|
| bailoutCount | int | 3
|
|---|---|---|
| compileCount | int | 6344
|
| invalidatedCount | int | 0
|
| nmethodCodeSize | ulong: bytes | 7367968
|
| nmethodsSize | ulong: bytes | 11786568
|
| osrBytesCompiled | ulong: bytes | 0
|
| osrCompileCount | int | 75
|
| peakTimeSpent | long: millis | 953
|
| standardBytesCompiled | ulong: bytes | 0
|
| standardCompileCount | int | 6269
|
| startTime | long: millis | 15709518458
|
| totalTimeSpent | long: millis | 14100
|
CompilerConfiguration
default profiling startTime end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Compiler
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| threadCount | int | Thread Count |
| tieredCompilation | boolean | Tiered Compilation |
| dynamicCompilerThreadCount | boolean 20+ | Uses Dynamic Number of Compiler Threads |
Examples 3
JVM: Diagnostics
SyncOnValueBasedClass
experimental default profiling startTime eventThread stackTrace 16 17 21 23 24
Category: Java Virtual Machine / Diagnostics
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| valueBasedClass | Class | Value Based Class Consider contributing a description to jfreventcollector. |
HeapDump
default profiling startTime duration eventThread stackTrace 15 17 21 23 24
Category: Java Virtual Machine / Diagnostics
Information about a successfully written Java heap dump
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 0 ns |
| profiling | true | true | 0 ns |
| Field | Type | Description |
|---|---|---|
| destination | string | Destination Path of the Dump |
| size | long | Size |
| gcBeforeDump | boolean | GC Before Dump |
| onOutOfMemoryError | boolean | Heap Dump on Out of Memory Error |
| overwrite | boolean 21+ | Overwrite Heap dump overwrites previous file location if it exists |
| compression | int 21+ | Compression Level Compression level of the dump, if larger than 0 we use gzip compression with this level |
JavaAgent
default profiling startTime end of every chunk 21 23 24
Category: Java Virtual Machine / Diagnostics
A Java programming language agent making use of the java.lang.instrument package for instrumenting programs running on the JVM
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| options | string | Options |
| dynamic | boolean | Dynamic If the agent attached to the JVM dynamically during runtime, i.e. not at startup |
| initializationTime | Ticks | Initialization Time The time the JVM initialized the agent |
| initializationDuration | Tickspan | Initialization Duration The duration of executing the initialization method, either premain or agentmain |
NativeAgent
default profiling startTime end of every chunk 21 23 24
Category: Java Virtual Machine / Diagnostics
A native programming language agent making use of the JVMTI interface used by development, profiling and monitoring tools
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| options | string | Options |
| dynamic | boolean | Dynamic If the library attached to the JVM dynamically during runtime, i.e. not at startup |
| initializationTime | Ticks | Initialization Time The time the JVM initialized the agent |
| initializationDuration | Tickspan | Initialization Duration The duration of executing the JVMTI VMInit event callback. If no VMInit callback is specified, the duration is 0. For a dynamically loaded agent, it is the duration of executing the call to Agent_OnAttach. |
| path | string | Path The path of the library |
JVM: Flag
IntFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | int | Old Value |
| newValue | int | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
UnsignedIntFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | uint | Old Value |
| newValue | uint | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
LongFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | long | Old Value |
| newValue | long | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
UnsignedLongFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | ulong | Old Value |
| newValue | ulong | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
DoubleFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | double | Old Value |
| newValue | double | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
BooleanFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | boolean | Old Value |
| newValue | boolean | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
StringFlagChanged
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| oldValue | string | Old Value |
| newValue | string | New Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
IntFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | int | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | JavaPriority8_To_OSPriority
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 27602501250
|
| value | int | -1
|
| name | string | JavaPriority1_To_OSPriority
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 17899849417
|
| value | int | -1
|
| name | string | JavaPriority3_To_OSPriority
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 40031147167
|
| value | int | -1
|
UnsignedIntFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | uint | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | TestCrashInErrorHandler
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 364799333
|
| value | uint | 0
|
| name | string | SharedSymbolTableBucketSize
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 17899852083
|
| value | uint | 4
|
| name | string | ParallelGCThreads
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 22150026834
|
| value | uint | 8
|
LongFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | long | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | FLOATPRESSURE
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 364807333
|
| value | long | -1
|
| name | string | Tier3DelayOff
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 676087917
|
| value | long | 2
|
| name | string | CICrashAt
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 423472625
|
| value | long | -1
|
UnsignedLongFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | ulong | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | MaxVirtMemFraction
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 364824000
|
| value | ulong | 2
|
| name | string | HeapFirstMaximumCompactionCount
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 423579000
|
| value | ulong | 3
|
| name | string | ReservedCodeCacheSize
|
|---|---|---|
| origin | FlagValueOrigin | Ergonomic
|
| startTime | long: millis | 676108375
|
| value | ulong | 251658240
|
DoubleFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | double | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | ZFragmentationLimit
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 50917432584
|
| value | double | 0.0
|
| name | string | G1ConcMarkStepDurationMillis
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 40031219167
|
| value | double | 10.0
|
| name | string | ZCollectionInterval
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 75087099500
|
| value | double | 0.0
|
BooleanFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | boolean | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | TracePatching
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 676158417
|
| value | boolean | false
|
| name | string | C1ProfileVirtualCalls
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 364842833
|
| value | boolean | true
|
| name | string | PatchALot
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 423600167
|
| value | boolean | false
|
StringFlag
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / Flag
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| value | string | Value |
| origin | FlagValueOrigin | Origin Consider contributing a description to jfreventcollector. |
Examples 3
| name | string | AllocateHeapAt
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 30586899708
|
| value | string | null
|
| name | string | HeapDumpPath
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 30519987417
|
| value | string | null
|
| name | string | DumpLoadedClassList
|
|---|---|---|
| origin | FlagValueOrigin | Default
|
| startTime | long: millis | 27602575209
|
| value | string | null
|
JVM: GC: Collector
GarbageCollection
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Collector
Garbage collection performed by the JVM
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | GCName | Name The name of the Garbage Collector |
| cause | GCCause | Cause The reason for triggering this Garbage Collection |
| sumOfPauses | Tickspan | Sum of Pauses Sum of all the times in which Java execution was paused during the garbage collection |
| longestPause | Tickspan | Longest Pause Longest individual pause during the garbage collection |
Examples 3
SystemGC
default profiling startTime duration eventThread stackTrace 17 21 23 24
Category: Java Virtual Machine / GC / Collector
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 0 ms |
| profiling | true | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| invokedConcurrent | boolean | Invoked Concurrent |
Examples 3
| invokedConcurrent | boolean | false
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | gc
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Runtime
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 53155586750
|
| invokedConcurrent | boolean | false
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | gc
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Runtime
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 60478432958
|
| invokedConcurrent | boolean | false
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | gc
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Runtime
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 70264989750
|
ParallelOldGarbageCollection
default profiling startTime duration 11 17 21 23 24
Category: Java Virtual Machine / GC / Collector
Appearing in: ParallelGC
Missing in: G1GC, SerialGC, ShenandoahGC, ZGC
Extra information specific to Parallel Old Garbage Collections
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| densePrefix | ulong: address | Dense Prefix The address of the dense prefix, used when compacting |
YoungGarbageCollection
default profiling startTime duration 11 17 21 23 24
Category: Java Virtual Machine / GC / Collector
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
Extra information specific to Young Garbage Collections
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| tenuringThreshold | uint | Tenuring Threshold |
OldGarbageCollection
default profiling startTime duration 11 17 21 23 24
Category: Java Virtual Machine / GC / Collector
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
Extra information specific to Old Garbage Collections
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
G1GarbageCollection
default profiling startTime duration 11 17 21 23 24
Category: Java Virtual Machine / GC / Collector
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Extra information specific to G1 Young Garbage Collections
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| type | G1YCType | Type Consider contributing a description to jfreventcollector. |
ZYoungGarbageCollection
default profiling startTime duration eventThread 21 23 24
Category: Java Virtual Machine / GC / Collector
Extra information specific to ZGC Young Garbage Collections
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| tenuringThreshold | uint | Tenuring Threshold |
ZOldGarbageCollection
JVM: GC: Configuration
GCConfiguration
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Configuration
The configuration of the garbage collector
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| youngCollector | GCName | Young Garbage Collector The garbage collector used for the young generation |
| oldCollector | GCName | Old Garbage Collector The garbage collector used for the old generation |
| parallelGCThreads | uint | Parallel GC Threads Number of parallel threads to use for garbage collection |
| concurrentGCThreads | uint | Concurrent GC Threads Number of concurrent threads to use for garbage collection |
| usesDynamicGCThreads | boolean | Uses Dynamic GC Threads Whether a dynamic number of GC threads are used or not |
| isExplicitGCConcurrent | boolean | Concurrent Explicit GC Whether System.gc() is concurrent or not |
| isExplicitGCDisabled | boolean | Disabled Explicit GC Whether System.gc() will cause a garbage collection or not |
| pauseTarget | long: millis | Pause Target Target for GC pauses |
| gcTimeRatio | uint | GC Time Ratio Target for runtime vs garbage collection time |
Examples 3
| concurrentGCThreads | uint | 2
|
|---|---|---|
| gcTimeRatio | uint | 12
|
| isExplicitGCConcurrent | boolean | false
|
| isExplicitGCDisabled | boolean | false
|
| oldCollector | GCName | G1Old
|
| parallelGCThreads | uint | 8
|
| pauseTarget | long: millis | -9223372036854775808
|
| startTime | long: millis | 13055579375
|
| usesDynamicGCThreads | boolean | true
|
| youngCollector | GCName | G1New
|
| concurrentGCThreads | uint | 0
|
|---|---|---|
| gcTimeRatio | uint | 99
|
| isExplicitGCConcurrent | boolean | false
|
| isExplicitGCDisabled | boolean | false
|
| oldCollector | GCName | SerialOld
|
| parallelGCThreads | uint | 0
|
| pauseTarget | long: millis | -9223372036854775808
|
| startTime | long: millis | 76136276083
|
| usesDynamicGCThreads | boolean | true
|
| youngCollector | GCName | DefNew
|
| concurrentGCThreads | uint | 0
|
|---|---|---|
| gcTimeRatio | uint | 99
|
| isExplicitGCConcurrent | boolean | false
|
| isExplicitGCDisabled | boolean | false
|
| oldCollector | GCName | ParallelOld
|
| parallelGCThreads | uint | 8
|
| pauseTarget | long: millis | -9223372036854775808
|
| startTime | long: millis | 75222448458
|
| usesDynamicGCThreads | boolean | true
|
| youngCollector | GCName | ParallelScavenge
|
GCSurvivorConfiguration
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Configuration
The configuration of the survivors of garbage collection
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| maxTenuringThreshold | ubyte | Maximum Tenuring Threshold Upper limit for the age of how old objects to keep in the survivor area |
| initialTenuringThreshold | ubyte | Initial Tenuring Threshold Initial age limit for how old objects to keep in survivor area |
Examples 3
GCTLABConfiguration
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Configuration
The configuration of the Thread Local Allocation Buffers (TLABs)
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| usesTLABs | boolean | TLABs Used If Thread Local Allocation Buffers (TLABs) are in use |
| minTLABSize | ulong: bytes | Minimum TLAB Size |
| tlabRefillWasteLimit | ulong: bytes | TLAB Refill Waste Limit |
Examples 3
GCHeapConfiguration
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Configuration
The configuration of the garbage collected heap
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| minSize | ulong: bytes | Minimum Heap Size |
| maxSize | ulong: bytes | Maximum Heap Size |
| initialSize | ulong: bytes | Initial Heap Size |
| usesCompressedOops | boolean | If Compressed Oops Are Used If compressed Oops (Ordinary Object Pointers) are enabled |
| compressedOopsMode | NarrowOopMode | Compressed Oops Mode The kind of compressed oops being used |
| objectAlignment | ulong: bytes | Object Alignment Object alignment (in bytes) on the heap |
| heapAddressBits | ubyte | Heap Address Size Heap Address Size (in bits) |
Examples 3
YoungGenerationConfiguration
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Configuration
The configuration of the young generation of the garbage collected heap
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| minSize | ulong: bytes | Minimum Young Generation Size |
| maxSize | ulong: bytes | Maximum Young Generation Size |
| newRatio | uint | New Ratio The size of the young generation relative to the tenured generation |
Examples 3
JVM: GC: Detailed
ZThreadDebug
internal startTime duration eventThread 18 21 23 24
Category: Java Virtual Machine / GC / Detailed
Temporary latency measurements used during development and debugging of ZGC
Only valid for the ZGC.
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name The name of the GC runner |
G1MMU
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| timeSlice | long: millis | Time Slice Time slice used to calculate MMU |
| gcTime | long: millis | GC Time Time stopped because of GC during last time slice |
| pauseTarget | long: millis | Pause Target Max time allowed to be spent on GC during last time slice |
EvacuationInformation
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| cSetRegions | uint | Collection Set Regions |
| cSetUsedBefore | ulong: bytes | Collection Set Before Memory usage before GC in the collection set regions |
| cSetUsedAfter | ulong: bytes | Collection Set After Memory usage after GC in the collection set regions |
| allocationRegions | uint | Allocation Regions Regions chosen as allocation regions during evacuation (includes survivors and old space regions) |
| allocationRegionsUsedBefore | ulong: bytes | Allocation Regions Before Memory usage before GC in allocation regions |
| allocationRegionsUsedAfter | ulong: bytes | Allocation Regions After Memory usage after GC in allocation regions |
| bytesCopied | ulong: bytes | Bytes Copied |
| regionsFreed | uint | Regions Freed |
Examples 1
| allocationRegions | uint | 5
|
|---|---|---|
| allocationRegionsUsedAfter | ulong: bytes | 9273984
|
| allocationRegionsUsedBefore | ulong: bytes | 1716704
|
| bytesCopied | ulong: bytes | 7557280
|
| cSetRegions | uint | 28
|
| cSetUsedAfter | ulong: bytes | 0
|
| cSetUsedBefore | ulong: bytes | 58398840
|
| gcId | uint | 14
|
| regionsFreed | uint | 28
|
| startTime | long: millis | 1879594125
|
ObjectCountAfterGC
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| objectClass | Class | Object Class Consider contributing a description to jfreventcollector. |
| count | long | Count |
| totalSize | ulong: bytes | Total Size |
Examples 3
| count | long | 844
|
|---|---|---|
| gcId | uint | 1
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/HashMap
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| startTime | long: millis | 865943958
|
| totalSize | ulong: bytes | 40512
|
| count | long | 959
|
|---|---|---|
| gcId | uint | 15
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/lang/String;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| startTime | long: millis | 1999232292
|
| totalSize | ulong: bytes | 3641984
|
| count | long | 1524
|
|---|---|---|
| gcId | uint | 3
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/jfr/AnnotationElement
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/jdk.jfr
|
| name | string | jdk.jfr
|
| version | string | 21.0.1
|
| name | string | jdk/jfr
|
| startTime | long: millis | 976302875
|
| totalSize | ulong: bytes | 36576
|
G1EvacuationYoungStatistics
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Memory related evacuation statistics during GC for the young generation
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| statistics | G1EvacuationStatistics struct | Evacuation Statistics |
Examples 1
| startTime | long: millis | 23214929834
|
|---|---|---|
| statistics | G1EvacuationStatistics | |
| allocated | ulong: bytes | 227592
|
| directAllocated | ulong: bytes | 11062208
|
| failureUsed | ulong: bytes | 0
|
| failureWaste | ulong: bytes | 0
|
| gcId | uint | 73
|
| numDirectAllocated | ulong | 5
|
| numPlabsFilled | ulong | 7504122885671534260
|
| regionEndWaste | ulong: bytes | 524344
|
| regionsRefilled | uint | 6
|
| undoWaste | ulong: bytes | 0
|
| used | ulong: bytes | 210000
|
| wasted | ulong: bytes | 3192
|
G1EvacuationOldStatistics
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Memory related evacuation statistics during GC for the old generation
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| statistics | G1EvacuationStatistics struct | Evacuation Statistics |
Examples 1
| startTime | long: millis | 1618779667
|
|---|---|---|
| statistics | G1EvacuationStatistics | |
| allocated | ulong: bytes | 9715600
|
| directAllocated | ulong: bytes | 522352
|
| failureUsed | ulong: bytes | 0
|
| failureWaste | ulong: bytes | 0
|
| gcId | uint | 9
|
| numDirectAllocated | ulong | 6147041496
|
| numPlabsFilled | ulong | 0
|
| regionEndWaste | ulong: bytes | 0
|
| regionsRefilled | uint | 5
|
| undoWaste | ulong: bytes | 0
|
| used | ulong: bytes | 9234784
|
| wasted | ulong: bytes | 8464
|
G1BasicIHOP
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Basic statistics related to current IHOP calculation
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| threshold | ulong: bytes | Current IHOP Threshold Current IHOP threshold |
| thresholdPercentage | float: percentage | Current IHOP Threshold Current IHOP threshold in percent of old generation |
| targetOccupancy | ulong: bytes | Target Occupancy Target old generation occupancy to reach at the start of mixed GC |
| currentOccupancy | ulong: bytes | Current Occupancy Current old generation occupancy |
| recentMutatorAllocationSize | ulong: bytes | Recent Mutator Allocation Size Mutator allocation during mutator operation in the most recent interval |
| recentMutatorDuration | long: millis | Recent Mutator Duration Time the mutator ran in the most recent interval |
| recentAllocationRate | double: bytes-per-second | Recent Allocation Rate Allocation rate of the mutator in the most recent interval in bytes/second |
| lastMarkingDuration | long: millis | Last Marking Duration Last time from the end of the last concurrent start to the first mixed GC |
Examples 1
| currentOccupancy | ulong: bytes | 71900568
|
|---|---|---|
| gcId | uint | 13
|
| lastMarkingDuration | long: millis | 157
|
| recentAllocationRate | double: bytes-per-second | 5.764797450103333E8
|
| recentMutatorAllocationSize | ulong: bytes | 9324248
|
| recentMutatorDuration | long: millis | 16
|
| startTime | long: millis | 1865517417
|
| targetOccupancy | ulong: bytes | 159383552
|
| threshold | ulong: bytes | 71722598
|
| thresholdPercentage | float: percentage | 0.45
|
G1AdaptiveIHOP
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Statistics related to current adaptive IHOP calculation
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| threshold | ulong: bytes | Threshold Current IHOP Threshold |
| thresholdPercentage | float: percentage | Threshold Current IHOP threshold in percent of the internal target occupancy |
| ihopTargetOccupancy | ulong: bytes | IHOP Target Occupancy Internal target old generation occupancy to reach at the start of mixed GC |
| currentOccupancy | ulong: bytes | Current Occupancy Current old generation occupancy |
| additionalBufferSize | ulong: bytes | Additional Buffer Additional buffer size |
| predictedAllocationRate | double: bytes-per-second | Predicted Allocation Rate Current predicted allocation rate for the mutator in bytes/second |
| predictedMarkingDuration | long: millis | Predicted Marking Duration Current predicted time from the end of the last concurrent start to the first mixed GC |
| predictionActive | boolean | Prediction Active Indicates whether the adaptive IHOP prediction is active |
Examples 1
| additionalBufferSize | ulong: bytes | 1333788672
|
|---|---|---|
| currentOccupancy | ulong: bytes | 335006064
|
| gcId | uint | 46
|
| ihopTargetOccupancy | ulong: bytes | 2111832064
|
| predictedAllocationRate | double: bytes-per-second | 2.881342804333272E9
|
| predictedMarkingDuration | long: millis | 338
|
| predictionActive | boolean | false
|
| startTime | long: millis | 14492894917
|
| threshold | ulong: bytes | 1000341504
|
| thresholdPercentage | float: percentage | 0.47368422
|
PromoteObjectInNewPLAB
profiling startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC
Missing in: SerialGC, ShenandoahGC, ZGC
Object survived scavenge and was copied to a new Promotion Local Allocation Buffer (PLAB). Supported GCs are Parallel Scavenge, G1 and CMS with Parallel New. Due to promotion being done in parallel an object might be reported multiple times as the GC threads race to copy all objects.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier Identifier signifying GC during which the object was promoted |
| objectClass | Class | Object Class Class of promoted object |
| objectSize | ulong: bytes | Object Size Size of promoted object |
| tenuringAge | uint | Object Tenuring Age Tenuring age of a surviving object before being copied. The tenuring age of an object is a value between 0-15 and is incremented each scavenge the object survives. Newly allocated objects have tenuring age 0. |
| tenured | boolean | Tenured True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space |
| plabSize | ulong: bytes | PLAB Size Size of the allocated PLAB to which the object was copied |
Examples 2
| gcId | uint | 3
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/util/HashMap$Node
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| objectSize | ulong: bytes | 32
|
| plabSize | ulong: bytes | 12032
|
| startTime | long: millis | 940120917
|
| tenured | boolean | true
|
| tenuringAge | uint | 1
|
PromoteObjectOutsidePLAB
profiling startTime eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC
Missing in: SerialGC, ShenandoahGC, ZGC
Object survived scavenge and was copied directly to the heap. Supported GCs are Parallel Scavenge, G1 and CMS with Parallel New. Due to promotion being done in parallel an object might be reported multiple times as the GC threads race to copy all objects.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier Identifier signifying GC during which the object was promoted |
| objectClass | Class | Object Class Class of promoted object |
| objectSize | ulong: bytes | Object Size Size of promoted object |
| tenuringAge | uint | Object Tenuring Age Tenuring age of a surviving object before being copied. The tenuring age of an object is a value between 0-15 and is incremented each scavenge the object survives. Newly allocated objects have tenuring age 0. |
| tenured | boolean | Tenured True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space |
Examples 2
| gcId | uint | 13
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/lang/Object;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| objectSize | ulong: bytes | 20848
|
| startTime | long: millis | 2073657833
|
| tenured | boolean | false
|
| tenuringAge | uint | 0
|
| gcId | uint | 41
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/util/concurrent/ForkJoinTask;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| objectSize | ulong: bytes | 262160
|
| startTime | long: millis | 11306889625
|
| tenured | boolean | true
|
| tenuringAge | uint | 1
|
PromotionFailed
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Promotion of an object failed
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| promotionFailed | CopyFailed struct | Promotion Failed Data |
| thread | Thread | Running thread |
EvacuationFailed
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Evacuation of an object failed
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| evacuationFailed | CopyFailed struct | Evacuation Failed Data |
ConcurrentModeFailure
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Concurrent Mode failed
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
GCCPUTime
default profiling startTime 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
GC CPU Time information. Supported: G1GC, ParallelGC and SerialGC
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| userTime | ulong: nanos | User Time |
| systemTime | ulong: nanos | System Time |
| realTime | ulong: nanos | Real Time |
Examples 3
AllocationRequiringGC
startTime eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | Pending GC Identifier |
| size | ulong: bytes | Allocation Size |
Examples 3
| gcId | uint | 79
|
|---|---|---|
| size | ulong: bytes | 24
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | 97
|
| method | Method | |
| descriptor | string | (Ljava/lang/Object;)Lscala/collection/immutable/List;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | $colon$colon
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | scala/collection/immutable/List
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/collection/immutable
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 11988120792
|
| gcId | uint | 96
|
|---|---|---|
| size | ulong: bytes | 32
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 12
|
| lineNumber | int | 101
|
| method | Method | |
| descriptor | string | (I)V
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1056
|
| name | string | java/lang/AbstractStringBuilder
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 68603043458
|
| gcId | uint | 56
|
|---|---|---|
| size | ulong: bytes | 50184
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 6
|
| lineNumber | int | 3482
|
| method | Method | |
| descriptor | string | ([Ljava/lang/Object;I)[Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 9
|
| name | string | copyOf
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 21420132542
|
TenuringDistribution
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, SerialGC
Missing in: ParallelGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| age | uint | Age |
| size | ulong: bytes | Size |
G1HeapRegionTypeChange
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Information about a G1 heap region type change
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| index | uint | Index |
| from | G1HeapRegionType | From Consider contributing a description to jfreventcollector. |
| to | G1HeapRegionType | To Consider contributing a description to jfreventcollector. |
| start | ulong: address | Start |
| used | ulong: bytes | Used |
Examples 1
| from | G1HeapRegionType | Free
|
|---|---|---|
| index | uint | 11
|
| start | ulong: address | 30087839744
|
| startTime | long: millis | 1509733042
|
| to | G1HeapRegionType | Eden
|
| used | ulong: bytes | 0
|
ObjectCount
startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | false | everyChunk |
| profiling | false | everyChunk |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| objectClass | Class | Object Class Consider contributing a description to jfreventcollector. |
| count | long | Count |
| totalSize | ulong: bytes | Total Size |
Examples 3
| count | long | 188
|
|---|---|---|
| gcId | uint | 1
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/jfr/internal/PlatformEventType
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/jdk.jfr
|
| name | string | jdk.jfr
|
| version | string | 21.0.1
|
| name | string | jdk/jfr/internal
|
| startTime | long: millis | 684981625
|
| totalSize | ulong: bytes | 16544
|
| count | long | 1657
|
|---|---|---|
| gcId | uint | 1
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/util/HashMap$Node;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| startTime | long: millis | 865943958
|
| totalSize | ulong: bytes | 186904
|
| count | long | 1045
|
|---|---|---|
| gcId | uint | 28
|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/lang/String;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| startTime | long: millis | 17449627375
|
| totalSize | ulong: bytes | 3644192
|
G1HeapRegionInformation
startTime duration every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Information about a specific heap region in the G1 GC
| Configuration | enabled | period |
|---|---|---|
| default | false | everyChunk |
| profiling | false | everyChunk |
| Field | Type | Description |
|---|---|---|
| index | uint | Index |
| type | G1HeapRegionType | Type Consider contributing a description to jfreventcollector. |
| start | ulong: address | Start |
| used | ulong: bytes | Used |
ZAllocationStall
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Time spent waiting for memory to become available
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| type | ZPageTypeType | Type Consider contributing a description to jfreventcollector. |
| size | ulong: bytes | Size |
ZPageAllocation
default profiling startTime duration eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Allocation of a ZPage
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true 15+ | 1 ms |
| profiling | true | true 15+ | 1 ms |
| Field | Type | Description |
|---|---|---|
| type | ZPageTypeType 15+ | Type Consider contributing a description to jfreventcollector. |
| size | ulong: bytes 15+ | Size |
| flushed | ulong: bytes 15+ | Flushed |
| committed | ulong: bytes 15+ | Committed |
| segments | uint 15+ | Segments |
| nonBlocking | boolean | Non-blocking |
Examples 1
| committed | ulong: bytes | 0
|
|---|---|---|
| flushed | ulong: bytes | 0
|
| nonBlocking | boolean | false
|
| segments | uint | 1
|
| size | ulong: bytes | 2097152
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 5
|
| lineNumber | int | 153
|
| method | Method | |
| descriptor | string | (Ljava/lang/Object;)V
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | linkLast
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/LinkedList
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 15128623916
|
| type | ZPageTypeType | Small
|
ZRelocationSet
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| total | ulong: bytes | Total |
| empty | ulong: bytes | Empty |
| relocate | ulong: bytes 16+ | Relocate |
ZRelocationSetGroup
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| type | ZPageTypeType | Type Consider contributing a description to jfreventcollector. |
| candidatePages | ulong 21+ | Candidate Pages |
| total | ulong: bytes | Total |
| empty | ulong: bytes | Empty |
| selectedPages | ulong 21+ | Selected Pages |
| relocate | ulong: bytes 16+ | Relocate |
ZStatisticsCounter
experimental startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| id | ZStatisticsCounterType | Id Consider contributing a description to jfreventcollector. |
| increment | ulong | Increment |
| value | ulong | Value |
ZStatisticsSampler
experimental startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| id | ZStatisticsSamplerType | Id Consider contributing a description to jfreventcollector. |
| value | ulong | Value |
Examples 1
| id | ZStatisticsSamplerType | Concurrent Weak Roots OopStorageSet
|
|---|---|---|
| startTime | long: millis | 751975833
|
| value | ulong | 119625
|
ZThreadPhase
experimental startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
ZUncommit
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Uncommitting of memory
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| uncommitted | ulong: bytes | Uncommitted |
ZUnmap
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Unmapping of memory
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| unmapped | ulong: bytes | Unmapped |
ShenandoahHeapRegionStateChange
Category: Java Virtual Machine / GC / Detailed
Appearing in: ShenandoahGC
Missing in: G1GC, ParallelGC, SerialGC, ZGC
Information about a Shenandoah heap region state change
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| index | uint | Index |
| from | ShenandoahHeapRegionState | From Consider contributing a description to jfreventcollector. |
| to | ShenandoahHeapRegionState | To Consider contributing a description to jfreventcollector. |
| start | ulong: address | Start |
| used | ulong: bytes | Used |
Examples 1
| from | ShenandoahHeapRegionState | Trash
|
|---|---|---|
| index | uint | 16
|
| start | ulong: address | 30098325504
|
| startTime | long: millis | 817497208
|
| to | ShenandoahHeapRegionState | Empty Committed
|
| used | ulong: bytes | 0
|
ShenandoahHeapRegionInformation
startTime duration every chunk 11 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
Appearing in: ShenandoahGC
Missing in: G1GC, ParallelGC, SerialGC, ZGC
Information about a specific heap region in the Shenandoah GC
| Configuration | enabled | period |
|---|---|---|
| default | false | everyChunk |
| profiling | false | everyChunk |
| Field | Type | Description |
|---|---|---|
| index | uint | Index |
| state | ShenandoahHeapRegionState | State Consider contributing a description to jfreventcollector. |
| start | ulong: address | Start |
| used | ulong: bytes | Used |
Examples 1
GCLocker
default profiling startTime eventThread stackTrace 17 21 23 24
Category: Java Virtual Machine / GC / Detailed
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 1 s |
| profiling | true | true | 100 ms |
| Field | Type | Description |
|---|---|---|
| lockCount | uint | Lock Count The number of Java threads in a critical section when the GC locker is started |
| stallCount | uint | Stall Count The number of Java threads stalled by the GC locker |
JVM: GC: Heap
GCHeapSummary
default profiling startTime 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Heap
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| when | GCWhen | When Consider contributing a description to jfreventcollector. |
| heapSpace | VirtualSpace struct | Heap Space Consider contributing a description to jfreventcollector. |
| heapUsed | ulong: bytes | Heap Used Bytes allocated by objects in the heap |
Examples 3
| gcId | uint | 34
|
|---|---|---|
| heapSpace | VirtualSpace | |
| committedEnd | ulong: address | 31628197888
|
| committedSize | ulong: bytes | 1563426816
|
| reservedEnd | ulong: address | 34359738368
|
| reservedSize | ulong: bytes | 4294967296
|
| start | ulong: address | 30064771072
|
| heapUsed | ulong: bytes | 1375833800
|
| startTime | long: millis | 20989635708
|
| when | GCWhen | Before GC
|
| gcId | uint | 26
|
|---|---|---|
| heapSpace | VirtualSpace | |
| committedEnd | ulong: address | 30324359168
|
| committedSize | ulong: bytes | 259588096
|
| reservedEnd | ulong: address | 34359738368
|
| reservedSize | ulong: bytes | 4294967296
|
| start | ulong: address | 30064771072
|
| heapUsed | ulong: bytes | 177439432
|
| startTime | long: millis | 1908582167
|
| when | GCWhen | Before GC
|
| gcId | uint | 44
|
|---|---|---|
| heapSpace | VirtualSpace | |
| committedEnd | ulong: address | 30903631872
|
| committedSize | ulong: bytes | 838860800
|
| reservedEnd | ulong: address | 34359738368
|
| reservedSize | ulong: bytes | 4294967296
|
| start | ulong: address | 30064771072
|
| heapUsed | ulong: bytes | 239585648
|
| startTime | long: millis | 13041960209
|
| when | GCWhen | After GC
|
MetaspaceSummary
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Heap
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| when | GCWhen | When Consider contributing a description to jfreventcollector. |
| gcThreshold | ulong: bytes | GC Threshold |
| metaspace | MetaspaceSizes struct | Total Consider contributing a description to jfreventcollector. |
| dataSpace | MetaspaceSizes struct | Data Consider contributing a description to jfreventcollector. |
| classSpace | MetaspaceSizes struct | Class Consider contributing a description to jfreventcollector. |
Examples 3
| classSpace | MetaspaceSizes | |
|---|---|---|
| committed | ulong: bytes | 4325376
|
| reserved | ulong: bytes | 1073741824
|
| used | ulong: bytes | 4187592
|
| dataSpace | MetaspaceSizes | |
| committed | ulong: bytes | 32636928
|
| reserved | ulong: bytes | 67108864
|
| used | ulong: bytes | 32427472
|
| gcId | uint | 36
|
| gcThreshold | ulong: bytes | 61603840
|
| metaspace | MetaspaceSizes | |
| committed | ulong: bytes | 36962304
|
| reserved | ulong: bytes | 1140850688
|
| used | ulong: bytes | 36615064
|
| startTime | long: millis | 9097945375
|
| when | GCWhen | Before GC
|
| classSpace | MetaspaceSizes | |
|---|---|---|
| committed | ulong: bytes | 2621440
|
| reserved | ulong: bytes | 1073741824
|
| used | ulong: bytes | 2509072
|
| dataSpace | MetaspaceSizes | |
| committed | ulong: bytes | 21168128
|
| reserved | ulong: bytes | 67108864
|
| used | ulong: bytes | 20978840
|
| gcId | uint | 31
|
| gcThreshold | ulong: bytes | 38338560
|
| metaspace | MetaspaceSizes | |
| committed | ulong: bytes | 23789568
|
| reserved | ulong: bytes | 1140850688
|
| used | ulong: bytes | 23487912
|
| startTime | long: millis | 1970824792
|
| when | GCWhen | Before GC
|
| classSpace | MetaspaceSizes | |
|---|---|---|
| committed | ulong: bytes | 4456448
|
| reserved | ulong: bytes | 1073741824
|
| used | ulong: bytes | 4315160
|
| dataSpace | MetaspaceSizes | |
| committed | ulong: bytes | 33357824
|
| reserved | ulong: bytes | 67108864
|
| used | ulong: bytes | 33141752
|
| gcId | uint | 29
|
| gcThreshold | ulong: bytes | 62914560
|
| metaspace | MetaspaceSizes | |
| committed | ulong: bytes | 37814272
|
| reserved | ulong: bytes | 1140850688
|
| used | ulong: bytes | 37456912
|
| startTime | long: millis | 17923630917
|
| when | GCWhen | Before GC
|
PSHeapSummary
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Heap
Appearing in: ParallelGC
Missing in: G1GC, SerialGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| when | GCWhen | When Consider contributing a description to jfreventcollector. |
| oldSpace | VirtualSpace struct | Old Space Consider contributing a description to jfreventcollector. |
| oldObjectSpace | ObjectSpace struct | Old Object Space Consider contributing a description to jfreventcollector. |
| youngSpace | VirtualSpace struct | Young Space Consider contributing a description to jfreventcollector. |
| edenSpace | ObjectSpace struct | Eden Space Consider contributing a description to jfreventcollector. |
| fromSpace | ObjectSpace struct | From Space Consider contributing a description to jfreventcollector. |
| toSpace | ObjectSpace struct | To Space Consider contributing a description to jfreventcollector. |
Examples 1
| edenSpace | ObjectSpace | |
|---|---|---|
| end | ulong: address | 34228142080
|
| size | ulong: bytes | 1299709952
|
| start | ulong: address | 32928432128
|
| used | ulong: bytes | 1299709952
|
| fromSpace | ObjectSpace | |
| end | ulong: address | 34264842240
|
| size | ulong: bytes | 36700160
|
| start | ulong: address | 34228142080
|
| used | ulong: bytes | 30365680
|
| gcId | uint | 23
|
| oldObjectSpace | ObjectSpace | |
| end | ulong: address | 30407131136
|
| size | ulong: bytes | 342360064
|
| start | ulong: address | 30064771072
|
| used | ulong: bytes | 178910352
|
| oldSpace | VirtualSpace | |
| committedEnd | ulong: address | 30407131136
|
| committedSize | ulong: bytes | 342360064
|
| reservedEnd | ulong: address | 32928432128
|
| reservedSize | ulong: bytes | 2863661056
|
| start | ulong: address | 30064771072
|
| startTime | long: millis | 10970344333
|
| toSpace | ObjectSpace | |
| end | ulong: address | 34359738368
|
| size | ulong: bytes | 77594624
|
| start | ulong: address | 34282143744
|
| used | ulong: bytes | 0
|
| when | GCWhen | Before GC
|
| youngSpace | VirtualSpace | |
| committedEnd | ulong: address | 34359738368
|
| committedSize | ulong: bytes | 1431306240
|
| reservedEnd | ulong: address | 34359738368
|
| reservedSize | ulong: bytes | 1431306240
|
| start | ulong: address | 32928432128
|
G1HeapSummary
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Heap
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| when | GCWhen | When Consider contributing a description to jfreventcollector. |
| edenUsedSize | ulong: bytes | Eden Used Size |
| edenTotalSize | ulong: bytes | Eden Total Size |
| survivorUsedSize | ulong: bytes | Survivor Used Size |
| oldGenUsedSize | ulong: bytes 21+ | Old Generation Used Size |
| numberOfRegions | uint | Number of Regions |
JVM: GC: Metaspace
MetaspaceGCThreshold
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Metaspace
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| oldValue | ulong: bytes | Old Value |
| newValue | ulong: bytes | New Value |
| updater | GCThresholdUpdater | Updater Consider contributing a description to jfreventcollector. |
Examples 3
MetaspaceAllocationFailure
default profiling startTime stackTrace 11 17 21 23 24
Category: Java Virtual Machine / GC / Metaspace
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| classLoader | ClassLoader | Class Loader Consider contributing a description to jfreventcollector. |
| hiddenClassLoader | boolean 15+ | Hidden Class Loader |
| size | ulong: bytes | Size |
| metadataType | MetadataType | Metadata Type Consider contributing a description to jfreventcollector. |
| metaspaceObjectType | MetaspaceObjectType | Metaspace Object Type Consider contributing a description to jfreventcollector. |
Examples 3
| classLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hiddenClassLoader | boolean | false
|
| metadataType | MetadataType | Metadata
|
| metaspaceObjectType | MetaspaceObjectType | ConstantPool
|
| size | ulong: bytes | 2440
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 967526042
|
| classLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hiddenClassLoader | boolean | false
|
| metadataType | MetadataType | Metadata
|
| metaspaceObjectType | MetaspaceObjectType | ConstMethod
|
| size | ulong: bytes | 104
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1430932917
|
| classLoader | ClassLoader | |
|---|---|---|
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hiddenClassLoader | boolean | false
|
| metadataType | MetadataType | Metadata
|
| metaspaceObjectType | MetaspaceObjectType | Method
|
| size | ulong: bytes | 88
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 858453667
|
MetaspaceOOM
default profiling startTime stackTrace 11 17 21 23 24
Category: Java Virtual Machine / GC / Metaspace
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| classLoader | ClassLoader | Class Loader Consider contributing a description to jfreventcollector. |
| hiddenClassLoader | boolean 15+ | Hidden Class Loader |
| size | ulong: bytes | Size |
| metadataType | MetadataType | Metadata Type Consider contributing a description to jfreventcollector. |
| metaspaceObjectType | MetaspaceObjectType | Metaspace Object Type Consider contributing a description to jfreventcollector. |
MetaspaceChunkFreeListSummary
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Metaspace
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| when | GCWhen | When Consider contributing a description to jfreventcollector. |
| metadataType | MetadataType | Metadata Type Consider contributing a description to jfreventcollector. |
| specializedChunks | ulong | Specialized Chunks |
| specializedChunksTotalSize | ulong: bytes | Specialized Chunks Total Size |
| smallChunks | ulong | Small Chunks |
| smallChunksTotalSize | ulong: bytes | Small Chunks Total Size |
| mediumChunks | ulong | Medium Chunks |
| mediumChunksTotalSize | ulong: bytes | Medium Chunks Total Size |
| humongousChunks | ulong | Humongous Chunks |
| humongousChunksTotalSize | ulong: bytes | Humongous Chunks Total Size |
Examples 3
| gcId | uint | 1
|
|---|---|---|
| humongousChunks | ulong | 0
|
| humongousChunksTotalSize | ulong: bytes | 0
|
| mediumChunks | ulong | 0
|
| mediumChunksTotalSize | ulong: bytes | 0
|
| metadataType | MetadataType | Metadata
|
| smallChunks | ulong | 0
|
| smallChunksTotalSize | ulong: bytes | 0
|
| specializedChunks | ulong | 0
|
| specializedChunksTotalSize | ulong: bytes | 0
|
| startTime | long: millis | 858562917
|
| when | GCWhen | Before GC
|
| gcId | uint | 7
|
|---|---|---|
| humongousChunks | ulong | 0
|
| humongousChunksTotalSize | ulong: bytes | 0
|
| mediumChunks | ulong | 0
|
| mediumChunksTotalSize | ulong: bytes | 0
|
| metadataType | MetadataType | Metadata
|
| smallChunks | ulong | 0
|
| smallChunksTotalSize | ulong: bytes | 0
|
| specializedChunks | ulong | 0
|
| specializedChunksTotalSize | ulong: bytes | 0
|
| startTime | long: millis | 1289869083
|
| when | GCWhen | Before GC
|
| gcId | uint | 20
|
|---|---|---|
| humongousChunks | ulong | 0
|
| humongousChunksTotalSize | ulong: bytes | 0
|
| mediumChunks | ulong | 0
|
| mediumChunksTotalSize | ulong: bytes | 0
|
| metadataType | MetadataType | Class
|
| smallChunks | ulong | 0
|
| smallChunksTotalSize | ulong: bytes | 0
|
| specializedChunks | ulong | 0
|
| specializedChunksTotalSize | ulong: bytes | 0
|
| startTime | long: millis | 2611058917
|
| when | GCWhen | After GC
|
JVM: GC: Phases
GCPhasePause
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Phases
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhasePauseLevel1
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Missing in: ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhasePauseLevel2
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhasePauseLevel3
startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ParallelGC, SerialGC
Missing in: ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
Examples 3
GCPhasePauseLevel4
startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ParallelGC
Missing in: SerialGC, ShenandoahGC, ZGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 0 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhaseConcurrent
default profiling startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ShenandoahGC, ZGC
Missing in: ParallelGC, SerialGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
Examples 3
GCPhaseConcurrentLevel1
default profiling startTime duration eventThread 15 17 21 23 24
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ShenandoahGC, ZGC
Missing in: ParallelGC, SerialGC
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhaseConcurrentLevel2
default profiling startTime duration eventThread 21 23 24
Category: Java Virtual Machine / GC / Phases
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| name | string | Name |
GCPhaseParallel
default profiling startTime duration eventThread 12 17 21 23 24
Category: Java Virtual Machine / GC / Phases
Appearing in: G1GC, ShenandoahGC
Missing in: ParallelGC, SerialGC, ZGC
GC phases for parallel workers
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 0 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| gcWorkerId | uint | GC Worker Identifier |
| name | string | Name |
JVM: GC: Reference
GCReferenceStatistics
default profiling startTime 11 17 21 23 24
Category: Java Virtual Machine / GC / Reference
Total count of processed references during GC
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| type | ReferenceType | Type Consider contributing a description to jfreventcollector. |
| count | ulong | Total Count |
Examples 3
| count | ulong | 0
|
|---|---|---|
| gcId | uint | 12
|
| startTime | long: millis | 1839937042
|
| type | ReferenceType | Soft reference
|
| count | ulong | 0
|
|---|---|---|
| gcId | uint | 13
|
| startTime | long: millis | 2098657917
|
| type | ReferenceType | Soft reference
|
| count | ulong | 0
|
|---|---|---|
| gcId | uint | 8
|
| startTime | long: millis | 1333304250
|
| type | ReferenceType | Final reference
|
JVM: Heap
GCHeapMemoryUsage
default profiling startTime every chunk 21 23 24
Category: Java Virtual Machine / Heap
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| used | ulong: bytes | Heap Used Bytes allocated for storing objects on the heap |
| committed | ulong: bytes | Heap Committed Bytes committed for storing objects on the heap |
| max | ulong: bytes | Heap Max Max size for the heap |
Examples 3
GCHeapMemoryPoolUsage
default profiling startTime every chunk 21 23 24
Category: Java Virtual Machine / Heap
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name GC Heap Memory Pool Name |
| used | ulong: bytes | GC Heap Memory Pool Used Bytes used for storing objects in this memory pool |
| committed | ulong: bytes | GC Heap Memory Pool Committed Bytes committed for storing objects in this memory pool |
| max | ulong: bytes | GC Heap Memory Pool Max Max size for storing objects in this memory pool |
Examples 3
JVM: Internal
Duration
internal startTime duration eventThread 18 21 23 24
Category: Java Virtual Machine / Internal
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
Instant
internal startTime eventThread 18 21 23 24
Category: Java Virtual Machine / Internal
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
Value
internal startTime eventThread 18 21 23 24
Category: Java Virtual Machine / Internal
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| value | ulong | Value |
Text
internal startTime eventThread 18 21 23 24
Category: Java Virtual Machine / Internal
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| text | string | Text |
JVM: Memory
ResidentSetSize
default profiling startTime duration every chunk 21 23 24
Category: Java Virtual Machine / Memory
Resident set size of the process
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| size | ulong: bytes | Resident Set Size Resident set size of the process |
| peak | ulong: bytes | Resident Set Size Peak Value Resident set size peak value of the process |
Examples 3
NativeMemoryUsage
default profiling startTime duration every chunk 20 21 23 24
Category: Java Virtual Machine / Memory
Native memory usage for a given memory type in the JVM
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| type | NMTType | Memory Type Type used for the native memory allocation |
| reserved | ulong: bytes | Reserved Memory Reserved bytes for this type |
| committed | ulong: bytes | Committed Memory Committed bytes for this type |
NativeMemoryUsageTotal
default profiling startTime duration every chunk 20 21 23 24
Category: Java Virtual Machine / Memory
Total native memory usage for the JVM. Might not be the exact sum of the NativeMemoryUsage events due to timeing.
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| reserved | ulong: bytes | Reserved Memory Total amount of reserved bytes for the JVM |
| committed | ulong: bytes | Committed Memory Total amount of committed bytes for the JVM |
JVM: Profiling
OldObjectSample
cutoff default profiling startTime eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / Profiling
A potential memory leak
| Configuration | cutoff | enabled | stackTrace |
|---|---|---|---|
| default | 0 ns | true | false |
| profiling | 0 ns | true | true |
| Field | Type | Description |
|---|---|---|
| allocationTime | Ticks | Allocation Time Consider contributing a description to jfreventcollector. |
| objectSize | ulong: bytes 18+ | Object Size |
| objectAge | Tickspan 14+ | Object Age Consider contributing a description to jfreventcollector. |
| lastKnownHeapUsage | ulong: bytes | Last Known Heap Usage |
| object | OldObject | Object Consider contributing a description to jfreventcollector. |
| arrayElements | int | Array Elements If the object is an array, the number of elements, or minimum value for the type int if it is not an array |
| root | OldObjectGcRoot | GC Root Consider contributing a description to jfreventcollector. |
Examples 3
| allocationTime | Ticks | 61738044625
|
|---|---|---|
| arrayElements | int | -2147483648
|
| lastKnownHeapUsage | ulong: bytes | 111141904
|
| object | OldObject | |
| address | ulong: address | 30167254608
|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/util/concurrent/ConcurrentHashMap$Node
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| objectAge | Tickspan | 16262480584
|
| objectSize | ulong: bytes | 32
|
| root | OldObjectGcRoot | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 83
|
| lineNumber | int | 1019
|
| method | Method | |
| descriptor | string | (Ljava/lang/Object;Ljava/lang/Object;Z)Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 16
|
| name | string | putVal
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/concurrent/ConcurrentHashMap
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 78000525209
|
| allocationTime | Ticks | 78463710250
|
|---|---|---|
| arrayElements | int | 64
|
| lastKnownHeapUsage | ulong: bytes | 121406312
|
| object | OldObject | |
| address | ulong: address | 30171583624
|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/util/concurrent/ForkJoinTask;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| objectAge | Tickspan | 15603200000
|
| objectSize | ulong: bytes | 272
|
| root | OldObjectGcRoot | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 32
|
| lineNumber | int | 1607
|
| method | Method | |
| descriptor | string | (Ljava/util/concurrent/ForkJoinPool$WorkQueue;)V
|
| hidden | boolean | false
|
| modifiers | int | 16
|
| name | string | registerWorker
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/concurrent/ForkJoinPool
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| type | FrameType | Interpreted
|
| truncated | boolean | false
|
| startTime | long: millis | 94066910250
|
| allocationTime | Ticks | 36779912083
|
|---|---|---|
| arrayElements | int | -2147483648
|
| lastKnownHeapUsage | ulong: bytes | 132764920
|
| object | OldObject | |
| address | ulong: address | 31582016760
|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/util/concurrent/locks/AbstractQueuedSynchronizer$ExclusiveNode
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent/locks
|
| objectAge | Tickspan | 62188085625
|
| objectSize | ulong: bytes | 32
|
| root | OldObjectGcRoot | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 30
|
| lineNumber | int | 591
|
| method | Method | |
| descriptor | string | ()Ljava/util/concurrent/locks/AbstractQueuedSynchronizer$Node;
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | tryInitializeHead
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/util/concurrent/locks/AbstractQueuedSynchronizer
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent/locks
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 98967997708
|
ExecutionSample
default profiling startTime every chunk 11 17 21 23 24 graal vm
Category: Java Virtual Machine / Profiling
Snapshot of a threads state
| Configuration | enabled | period |
|---|---|---|
| default | true | 20 ms |
| profiling | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| sampledThread | Thread | Thread Consider contributing a description to jfreventcollector. |
| stackTrace | StackTrace | Stack Trace Consider contributing a description to jfreventcollector. |
| state | ThreadState | Thread State |
Examples 3
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-4
|
| javaThreadId | long | 39
|
| osName | string | ForkJoinPool.commonPool-worker-4
|
| osThreadId | long | 33795
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 3
|
| lineNumber | int | 498
|
| method | Method | |
| descriptor | string | (JLjava/util/function/LongBinaryOperator;)J
|
| hidden | boolean | false
|
| modifiers | int | 17
|
| name | string | reduce
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1056
|
| name | string | java/util/stream/LongPipeline
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/stream
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 2452587875
|
| state | ThreadState | STATE_RUNNABLE
|
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-3
|
| javaThreadId | long | 33
|
| osName | string | ForkJoinPool.commonPool-worker-3
|
| osThreadId | long | 26627
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | 5939
|
| method | Method | |
| descriptor | string | (III)Z
|
| hidden | boolean | false
|
| modifiers | int | 4106
|
| name | string | lambda$Range$17
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Pattern
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1569143375
|
| state | ThreadState | STATE_RUNNABLE
|
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-5
|
| javaThreadId | long | 27
|
| osName | string | ForkJoinPool.commonPool-worker-5
|
| osThreadId | long | 26627
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 166
|
| lineNumber | int | 1219
|
| method | Method | |
| descriptor | string | (Ljava/lang/Object;Ljava/util/function/Function;)Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | computeIfAbsent
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/HashMap
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1928144083
|
| state | ThreadState | STATE_RUNNABLE
|
NativeMethodSample
default profiling startTime every chunk 11 17 21 23 24 graal vm
Category: Java Virtual Machine / Profiling
Snapshot of a threads state when in native
| Configuration | enabled | period |
|---|---|---|
| default | true | 20 ms |
| profiling | true | 20 ms |
| Field | Type | Description |
|---|---|---|
| sampledThread | Thread | Thread Consider contributing a description to jfreventcollector. |
| stackTrace | StackTrace | Stack Trace Consider contributing a description to jfreventcollector. |
| state | ThreadState | Thread State |
Examples 3
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | main
|
| javaThreadId | long | 1
|
| osName | string | main
|
| osThreadId | long | 8451
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (J[BII[BII)J
|
| hidden | boolean | false
|
| modifiers | int | 258
|
| name | string | inflateBytesBytes
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/zip/Inflater
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/zip
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 4412982042
|
| state | ThreadState | STATE_RUNNABLE
|
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | main
|
| javaThreadId | long | 1
|
| osName | string | main
|
| osThreadId | long | 10499
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;I)[Ljava/net/InetAddress;
|
| hidden | boolean | false
|
| modifiers | int | 258
|
| name | string | lookupAllHostAddr
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/net/Inet6AddressImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 4276857583
|
| state | ThreadState | STATE_RUNNABLE
|
| sampledThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-8
|
| javaThreadId | long | 48
|
| osName | string | UCT-akka.actor.default-dispatcher-8
|
| osThreadId | long | 19719
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()I
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | hashCode
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Object
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 9610440333
|
| state | ThreadState | STATE_RUNNABLE
|
JVM: Runtime
ContinuationFreeze
experimental startTime duration eventThread stackTrace 19 21 23 24
Category: Java Virtual Machine / Runtime
Invocation of Continuation.yield()
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | false | false | 0 ms |
| profiling | false | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| carrierThread | Thread | Carrier Thread Thread enlisted as a carrier |
| continuationClass | Class | Continuation Class Consider contributing a description to jfreventcollector. |
| interpretedFrames | ushort | Interpreted Frames |
| size | ushort: bytes | Stack Size |
ContinuationThaw
experimental startTime duration eventThread stackTrace 19 21 23 24
Category: Java Virtual Machine / Runtime
Invocation of Continuation.run() on a started continuation
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | false | false | 0 ms |
| profiling | false | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| carrierThread | Thread | Carrier Thread Thread enlisted as a carrier |
| continuationClass | Class | Continuation Class Consider contributing a description to jfreventcollector. |
| interpretedFrames | ushort | Interpreted Frames |
| size | ushort: bytes | Stack Size |
ContinuationFreezeFast
experimental startTime eventThread 20 21 23 24
Category: Java Virtual Machine / Runtime
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| id | ulong | Continuation ID |
| size | uint | Size |
| allocate | boolean | Allocated New |
ContinuationFreezeSlow
experimental startTime eventThread 20 21 23 24
Category: Java Virtual Machine / Runtime
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| id | ulong | Continuation ID |
ContinuationThawFast
experimental startTime eventThread 20 21 23 24
Category: Java Virtual Machine / Runtime
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| id | ulong | Continuation ID |
| full | boolean | Full |
| size | uint | Size |
ContinuationThawSlow
experimental startTime eventThread 20 21 23 24
Category: Java Virtual Machine / Runtime
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| id | ulong | Continuation ID |
ReservedStackActivation
default profiling startTime eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / Runtime
Activation of Reserved Stack Area caused by stack overflow with ReservedStackAccess annotated method in call stack
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| method | Method | Java Method |
SafepointBegin
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / Runtime / Safepoint
Safepointing begin
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 10 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| safepointId | ulong | Safepoint Identifier |
| totalThreadCount | int | Total Threads The total number of threads at the start of safe point |
| jniCriticalThreadCount | int | JNI Critical Threads The number of threads in JNI critical sections |
Examples 3
SafepointStateSynchronization
startTime duration eventThread 11 17 21 23 24
Category: Java Virtual Machine / Runtime / Safepoint
Synchronize run state of threads
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 10 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| safepointId | ulong | Safepoint Identifier |
| initialThreadCount | int | Initial Threads The number of threads running at the beginning of state check |
| runningThreadCount | int | Running Threads The number of threads still running |
| iterations | int | Iterations Number of state check iterations |
Examples 3
SafepointCleanup
startTime duration eventThread 11 17 21 until JDK 23
Category: Java Virtual Machine / Runtime / Safepoint
Safepointing begin running cleanup tasks
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 10 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| safepointId | ulong | Safepoint Identifier |
SafepointCleanupTask
startTime duration eventThread 11 17 21 until JDK 23
Category: Java Virtual Machine / Runtime / Safepoint
Safepointing begin running cleanup tasks
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 10 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| safepointId | ulong | Safepoint Identifier |
| name | string | Task Name The task name |
Examples 3
SafepointEnd
startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / Runtime / Safepoint
Safepointing end
| Configuration | enabled | threshold |
|---|---|---|
| default | false | 10 ms |
| profiling | false | 0 ms |
| Field | Type | Description |
|---|---|---|
| safepointId | ulong | Safepoint Identifier |
ExecuteVMOperation
default profiling startTime duration eventThread 11 17 21 23 24 graal vm
Category: Java Virtual Machine / Runtime
Execution of a VM Operation
| Configuration | enabled | threshold |
|---|---|---|
| default | true | 10 ms |
| profiling | true | 0 ms |
| Field | Type | Description |
|---|---|---|
| operation | VMOperationType | Operation Consider contributing a description to jfreventcollector. |
| safepoint | boolean | At Safepoint If the operation occurred at a safepoint |
| blocking | boolean | Caller Blocked If the calling thread was blocked until the operation was complete |
| caller | Thread | Caller Thread requesting operation. If non-blocking, will be set to 0 indicating thread is unknown |
| safepointId | ulong | Safepoint Identifier The safepoint (if any) under which this operation was completed |
Examples 3
| blocking | boolean | true
|
|---|---|---|
| caller | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-6
|
| javaThreadId | long | 36
|
| osName | string | ForkJoinPool.commonPool-worker-6
|
| osThreadId | long | 43267
|
| virtual | boolean | false
|
| operation | VMOperationType | ICBufferFull
|
| safepoint | boolean | true
|
| safepointId | ulong | 24
|
| startTime | long: millis | 1799320958
|
| blocking | boolean | true
|
|---|---|---|
| caller | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-4
|
| javaThreadId | long | 43
|
| osName | string | UCT-akka.actor.default-dispatcher-4
|
| osThreadId | long | 26895
|
| virtual | boolean | false
|
| operation | VMOperationType | GenCollectForAllocation
|
| safepoint | boolean | true
|
| safepointId | ulong | 87
|
| startTime | long: millis | 7029818125
|
Shutdown
default profiling startTime eventThread stackTrace 11 17 21 23 24
Category: Java Virtual Machine / Runtime
JVM shutting down
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| reason | string | Reason Reason for JVM shutdown |
Examples 3
| reason | string | Shutdown requested from Java
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | beforeHalt
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/lang/Shutdown
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 94066455250
|
| reason | string | Shutdown requested from Java
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | beforeHalt
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/lang/Shutdown
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 77999546542
|
| reason | string | Shutdown requested from Java
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | beforeHalt
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/lang/Shutdown
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 98967385458
|
SymbolTableStatistics
default profiling startTime duration every chunk 13 17 21 23 24
Category: Java Virtual Machine / Runtime / Tables
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 10 s |
| profiling | true | 10 s |
| Field | Type | Description |
|---|---|---|
| bucketCount | ulong | Bucket Count Number of buckets |
| entryCount | ulong | Entry Count Number of all entries |
| totalFootprint | ulong: bytes | Total Footprint Total memory footprint (the table itself plus all of the entries) |
| bucketCountMaximum | ulong | Maximum Bucket Count The maximum bucket length (entries in a single bucket) |
| bucketCountAverage | float | Average Bucket Count The average bucket length |
| bucketCountVariance | float | Bucket Count Variance How far bucket lengths are spread out from their average value |
| bucketCountStandardDeviation | float | Bucket Count Standard Deviation How far bucket lengths are spread out from their mean (expected) value |
| insertionRate | float | Insertion Rate How many items were added since last event (per second) |
| removalRate | float | Removal Rate How many items were removed since last event (per second) |
Examples 3
| bucketCount | ulong | 32768
|
|---|---|---|
| bucketCountAverage | float | 5.020691
|
| bucketCountMaximum | ulong | 18
|
| bucketCountStandardDeviation | float | 2.2593527
|
| bucketCountVariance | float | 5.1046743
|
| entryCount | ulong | 164518
|
| insertionRate | float | 3.701437
|
| removalRate | float | 0.9740624
|
| startTime | long: millis | 98631548708
|
| totalFootprint | ulong: bytes | 14301672
|
| bucketCount | ulong | 32768
|
|---|---|---|
| bucketCountAverage | float | 4.3593445
|
| bucketCountMaximum | ulong | 15
|
| bucketCountStandardDeviation | float | 2.1059704
|
| bucketCountVariance | float | 4.435111
|
| entryCount | ulong | 142847
|
| insertionRate | float | 6.1487455
|
| removalRate | float | 35.00818
|
| startTime | long: millis | 42452494875
|
| totalFootprint | ulong: bytes | 11790928
|
| bucketCount | ulong | 32768
|
|---|---|---|
| bucketCountAverage | float | 5.0481567
|
| bucketCountMaximum | ulong | 18
|
| bucketCountStandardDeviation | float | 2.2677255
|
| bucketCountVariance | float | 5.1425786
|
| entryCount | ulong | 165418
|
| insertionRate | float | 5757.7856
|
| removalRate | float | 4662.9834
|
| startTime | long: millis | 62133172375
|
| totalFootprint | ulong: bytes | 14377008
|
StringTableStatistics
default profiling startTime duration every chunk 13 17 21 23 24
Category: Java Virtual Machine / Runtime / Tables
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 10 s |
| profiling | true | 10 s |
| Field | Type | Description |
|---|---|---|
| bucketCount | ulong | Bucket Count Number of buckets |
| entryCount | ulong | Entry Count Number of all entries |
| totalFootprint | ulong: bytes | Total Footprint Total memory footprint (the table itself plus all of the entries) |
| bucketCountMaximum | ulong | Maximum Bucket Count The maximum bucket length (entries in a single bucket) |
| bucketCountAverage | float | Average Bucket Count The average bucket length |
| bucketCountVariance | float | Bucket Count Variance How far bucket lengths are spread out from their average value |
| bucketCountStandardDeviation | float | Bucket Count Standard Deviation How far bucket lengths are spread out from their mean (expected) value |
| insertionRate | float | Insertion Rate How many items were added since last event (per second) |
| removalRate | float | Removal Rate How many items were removed since last event (per second) |
Examples 3
| bucketCount | ulong | 65536
|
|---|---|---|
| bucketCountAverage | float | 0.18395996
|
| bucketCountMaximum | ulong | 4
|
| bucketCountStandardDeviation | float | 0.43004563
|
| bucketCountVariance | float | 0.18493925
|
| entryCount | ulong | 12056
|
| insertionRate | float | 8841.0
|
| removalRate | float | 135.0
|
| startTime | long: millis | 11607489917
|
| totalFootprint | ulong: bytes | 1478152
|
| bucketCount | ulong | 65536
|
|---|---|---|
| bucketCountAverage | float | 0.54649353
|
| bucketCountMaximum | ulong | 6
|
| bucketCountStandardDeviation | float | 0.7300648
|
| bucketCountVariance | float | 0.5329946
|
| entryCount | ulong | 35815
|
| insertionRate | float | 568.8381
|
| removalRate | float | 34.001476
|
| startTime | long: millis | 84147251708
|
| totalFootprint | ulong: bytes | 3016720
|
| bucketCount | ulong | 65536
|
|---|---|---|
| bucketCountAverage | float | 0.35380554
|
| bucketCountMaximum | ulong | 6
|
| bucketCountStandardDeviation | float | 0.5867873
|
| bucketCountVariance | float | 0.3443193
|
| entryCount | ulong | 23187
|
| insertionRate | float | 1035.0499
|
| removalRate | float | 34.749878
|
| startTime | long: millis | 31680303167
|
| totalFootprint | ulong: bytes | 2567272
|
ThreadDump
default profiling startTime duration every chunk 11 17 21 23 24
Category: Java Virtual Machine / Runtime
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | 60 s |
| Field | Type | Description |
|---|---|---|
| result | string | Thread Dump |
Examples 3
| result | string | 2023-12-18 12:47:28
Full thread dump OpenJDK 64-Bit Server VM (21.0.1+12-LTS mixed mode):
Threads class SMR info:
_java_thread_list=0x000060000092cca0, length=77, elements={
0x0000000132812000, 0x0000000131017000, 0x0000000131014c00, 0x000000013203b200,
0x0000000132008200, 0x0000000132009600, 0x000…
|
|---|---|---|
| startTime | long: millis | 67214999000
|
| result | string | 2023-12-18 13:32:26
Full thread dump OpenJDK 64-Bit Server VM (21.0.1+12-LTS mixed mode):
Threads class SMR info:
_java_thread_list=0x00006000017c1400, length=143, elements={
0x000000014200b400, 0x0000000144010800, 0x000000013200aa00, 0x0000000144044800,
0x0000000144041800, 0x0000000142009800, 0x00…
|
|---|---|---|
| startTime | long: millis | 62136723709
|
| result | string | 2023-12-18 12:45:49
Full thread dump OpenJDK 64-Bit Server VM (21.0.1+12-LTS mixed mode):
Threads class SMR info:
_java_thread_list=0x00006000003cd500, length=77, elements={
0x000000011f00f200, 0x000000010e038800, 0x000000010e03b200, 0x000000011f80ec00,
0x000000011f80c800, 0x000000011f811600, 0x000…
|
|---|---|---|
| startTime | long: millis | 63501309417
|
NativeLibrary
default profiling startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / Runtime
Information about a dynamic library or other native image loaded by the JVM process
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
| baseAddress | ulong: address | Base Address Starting address of the module |
| topAddress | ulong: address | Top Address Ending address of the module, if available |
Examples 3
ModuleRequire
default profiling startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / Runtime / Modules
A directed edge representing a dependency
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| source | Module | Source Module |
| requiredModule | Module | Required Module Consider contributing a description to jfreventcollector. |
Examples 3
| requiredModule | Module | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.datatransfer
|
| name | string | java.datatransfer
|
| version | string | 21.0.1
|
| source | Module | |
| classLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| location | string | jrt:/jdk.unsupported.desktop
|
| name | string | jdk.unsupported.desktop
|
| version | string | 21.0.1
|
| startTime | long: millis | 16763952708
|
| requiredModule | Module | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.naming
|
| name | string | java.naming
|
| version | string | 21.0.1
|
| source | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.management.rmi
|
| name | string | java.management.rmi
|
| version | string | 21.0.1
|
| startTime | long: millis | 12401797959
|
| requiredModule | Module | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.naming
|
| name | string | java.naming
|
| version | string | 21.0.1
|
| source | Module | |
| classLoader | ClassLoader | |
| name | string | platform
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$PlatformClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| location | string | jrt:/java.sql.rowset
|
| name | string | java.sql.rowset
|
| version | string | 21.0.1
|
| startTime | long: millis | 14998474333
|
ModuleExport
default profiling startTime every chunk 11 17 21 23 24
Category: Java Virtual Machine / Runtime / Modules
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| exportedPackage | Package | Exported Package Consider contributing a description to jfreventcollector. |
| targetModule | Module | Target Module Module to which the package is qualifiedly exported. If null or N/A, the package is unqualifiedly exported |
Examples 3
| exportedPackage | Package | |
|---|---|---|
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/concurrent/duration
|
| startTime | long: millis | 12401834834
|
| targetModule | Module | null
|
| exportedPackage | Package | |
|---|---|---|
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| location | string | jrt:/jdk.internal.ed
|
| name | string | jdk.internal.ed
|
| version | string | 21.0.1
|
| name | string | jdk/internal/editor/external
|
| startTime | long: millis | 14998523917
|
| targetModule | Module | |
| classLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| location | string | jrt:/jdk.jshell
|
| name | string | jdk.jshell
|
| version | string | 21.0.1
|
| exportedPackage | Package | |
|---|---|---|
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/collection/convert
|
| startTime | long: millis | 16764024625
|
| targetModule | Module | null
|
Java Application
ThreadStart
default profiling startTime eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| thread | Thread | New Java Thread |
| parentThread | Thread | Parent Java Thread |
Examples 3
| parentThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-2
|
| javaThreadId | long | 32
|
| osName | string | ForkJoinPool.commonPool-worker-2
|
| osThreadId | long | 27143
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 2
|
| lineNumber | int | 2573
|
| method | Method | |
| descriptor | string | (Ljava/lang/Thread;Ljdk/internal/vm/ThreadContainer;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | start
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/lang/System$2
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1505677708
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | ForkJoinPool.commonPool-worker-4
|
| javaThreadId | long | 34
|
| osName | string | ForkJoinPool.commonPool-worker-4
|
| osThreadId | long | 26115
|
| virtual | boolean | false
|
| parentThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | C1 CompilerThread0
|
| javaThreadId | long | 12
|
| osName | string | C1 CompilerThread0
|
| osThreadId | long | 22787
|
| virtual | boolean | false
|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 6745408375
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | C2 CompilerThread1
|
| javaThreadId | long | 10
|
| osName | string | C2 CompilerThread1
|
| osThreadId | long | 32003
|
| virtual | boolean | false
|
| parentThread | Thread | |
|---|---|---|
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-5
|
| javaThreadId | long | 55
|
| osName | string | UCT-akka.actor.default-dispatcher-5
|
| osThreadId | long | 39171
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 2
|
| lineNumber | int | 2573
|
| method | Method | |
| descriptor | string | (Ljava/lang/Thread;Ljdk/internal/vm/ThreadContainer;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | start
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/lang/System$2
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 8074241917
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | scala-execution-context-global-58
|
| javaThreadId | long | 58
|
| osName | string | scala-execution-context-global-58
|
| osThreadId | long | 38147
|
| virtual | boolean | false
|
ThreadEnd
default profiling startTime eventThread 11 17 21 23 24 graal vm
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | true |
| profiling | true |
| Field | Type | Description |
|---|---|---|
| thread | Thread | Java Thread |
Examples 3
| startTime | long: millis | 11458418084
|
|---|---|---|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-9
|
| javaThreadId | long | 61
|
| osName | string | UCT-akka.actor.default-dispatcher-9
|
| osThreadId | long | 37891
|
| virtual | boolean | false
|
| startTime | long: millis | 11837709042
|
|---|---|---|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-20
|
| javaThreadId | long | 94
|
| osName | string | UCT-akka.actor.default-dispatcher-20
|
| osThreadId | long | 60163
|
| virtual | boolean | false
|
| startTime | long: millis | 19791381625
|
|---|---|---|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-scheduler-1
|
| javaThreadId | long | 112
|
| osName | string | UCT-scheduler-1
|
| osThreadId | long | 63751
|
| virtual | boolean | false
|
ThreadPark
default profiling startTime duration eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| parkedClass | Class | Class Parked On |
| timeout | long: nanos | Park Timeout |
| until | long: epochmillis | Park Until |
| address | ulong: address | Address of Object Parked |
Examples 3
| address | ulong: address | 30155240112
|
|---|---|---|
| parkedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/concurrent/ForkJoinPool
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (ZJ)V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | park
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 7274953542
|
| timeout | long: nanos | -9223372036854775808
|
| until | long: epochmillis | -9223372036854775808
|
| address | ulong: address | 31586136128
|
|---|---|---|
| parkedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/concurrent/ForkJoinPool
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (ZJ)V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | park
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 4689421875
|
| timeout | long: nanos | -9223372036854775808
|
| until | long: epochmillis | -9223372036854775808
|
| address | ulong: address | 30156597904
|
|---|---|---|
| parkedClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/concurrent/ForkJoinPool
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (ZJ)V
|
| hidden | boolean | false
|
| modifiers | int | 257
|
| name | string | park
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 5074942083
|
| timeout | long: nanos | -9223372036854775808
|
| until | long: epochmillis | -9223372036854775808
|
JavaMonitorEnter
default profiling startTime duration eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| monitorClass | Class | Monitor Class Consider contributing a description to jfreventcollector. |
| previousOwner | Thread | Previous Monitor Owner |
| address | ulong: address | Monitor Address |
Examples 3
| address | ulong: address | 105553176308912
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| previousOwner | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-4
|
| javaThreadId | long | 50
|
| osName | string | UCT-akka.actor.default-dispatcher-4
|
| osThreadId | long | 41223
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | -1
|
| lineNumber | int | 115
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | countUp
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 7581483917
|
| address | ulong: address | 105553162252064
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| previousOwner | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-11
|
| javaThreadId | long | 88
|
| osName | string | UCT-akka.actor.default-dispatcher-11
|
| osThreadId | long | 47619
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | -1
|
| lineNumber | int | 109
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | countDown
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 10277900000
|
| address | ulong: address | 105553170730032
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| previousOwner | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-9
|
| javaThreadId | long | 51
|
| osName | string | UCT-akka.actor.default-dispatcher-9
|
| osThreadId | long | 42499
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | -1
|
| lineNumber | int | 115
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | countUp
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | edu/rice/habanero/actors/AkkaActorState$actorLatch$
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | edu/rice/habanero/actors
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 8321806417
|
JavaMonitorWait
default profiling startTime duration eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
Waiting on a Java monitor
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| monitorClass | Class | Monitor Class Class of object waited on |
| notifier | Thread | Notifier Thread Notifying Thread |
| timeout | long: millis | Timeout Maximum wait time |
| timedOut | boolean | Timed Out Wait has been timed out |
| address | ulong: address | Monitor Address Address of object waited on |
Examples 3
| address | ulong: address | 105553435787680
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | scala/concurrent/stm/ccstm/TxnLevelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/concurrent/stm/ccstm
|
| notifier | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | Thread-39
|
| javaThreadId | long | 368
|
| osName | string | Thread-39
|
| osThreadId | long | 19735
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (J)V
|
| hidden | boolean | false
|
| modifiers | int | 274
|
| name | string | wait0
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Object
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 75962842125
|
| timedOut | boolean | false
|
| timeout | long: millis | 0
|
| address | ulong: address | 105553311015456
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | org/renaissance/twitter/finagle/FinagleChirper$Client
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | org/renaissance/twitter/finagle
|
| notifier | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | Thread-46
|
| javaThreadId | long | 393
|
| osName | string | Thread-46
|
| osThreadId | long | 68867
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (J)V
|
| hidden | boolean | false
|
| modifiers | int | 274
|
| name | string | wait0
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Object
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 93918715500
|
| timedOut | boolean | false
|
| timeout | long: millis | 0
|
| address | ulong: address | 105553158755616
|
|---|---|---|
| monitorClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Thread
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| notifier | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | Thread-24
|
| javaThreadId | long | 362
|
| osName | string | Thread-24
|
| osThreadId | long | 65559
|
| virtual | boolean | false
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (J)V
|
| hidden | boolean | false
|
| modifiers | int | 274
|
| name | string | wait0
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Object
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 45870823417
|
| timedOut | boolean | false
|
| timeout | long: millis | 0
|
JavaMonitorInflate
profiling startTime duration eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | false | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| monitorClass | Class | Monitor Class Consider contributing a description to jfreventcollector. |
| address | ulong: address | Monitor Address |
| cause | InflateCause | Monitor Inflation Cause Cause of inflation |
ObjectAllocationInNewTLAB
startTime eventThread stackTrace 11 17 21 23 24 graal vm
Category: Java Application
Allocation in new Thread Local Allocation Buffer
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| objectClass | Class | Object Class Class of allocated object |
| allocationSize | ulong: bytes | Allocation Size |
| tlabSize | ulong: bytes | TLAB Size |
Examples 3
| allocationSize | ulong: bytes | 24
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [B
|
| package | Package | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 10
|
| lineNumber | int | 3863
|
| method | Method | |
| descriptor | string | ([BII)[B
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | copyOfRangeByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1095656542
|
| tlabSize | ulong: bytes | 1342200
|
| allocationSize | ulong: bytes | 24
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/lang/String
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 7
|
| lineNumber | int | 752
|
| method | Method | |
| descriptor | string | ([BII)Ljava/lang/String;
|
| hidden | boolean | false
|
| modifiers | int | 9
|
| name | string | newString
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/lang/StringLatin1
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1509777000
|
| tlabSize | ulong: bytes | 1048576
|
| allocationSize | ulong: bytes | 80
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Matcher
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 32
|
| lineNumber | int | 1180
|
| method | Method | |
| descriptor | string | (Ljava/lang/CharSequence;)Ljava/util/regex/Matcher;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | matcher
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Pattern
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 991751375
|
| tlabSize | ulong: bytes | 1434000
|
ObjectAllocationOutsideTLAB
startTime eventThread stackTrace 11 17 21 23 24
Category: Java Application
Allocation outside Thread Local Allocation Buffers
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| objectClass | Class | Object Class Class of allocated object |
| allocationSize | ulong: bytes | Allocation Size |
Examples 3
| allocationSize | ulong: bytes | 8832
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/lang/Object;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 7
|
| lineNumber | int | 3513
|
| method | Method | |
| descriptor | string | ([Ljava/lang/Object;ILjava/lang/Class;)[Ljava/lang/Object;
|
| hidden | boolean | false
|
| modifiers | int | 9
|
| name | string | copyOf
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 2020202042
|
| allocationSize | ulong: bytes | 17720
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [B
|
| package | Package | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 64
|
| lineNumber | int | 89
|
| method | Method | |
| descriptor | string | (Ljava/io/InputStream;Ljava/util/zip/Inflater;I)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/util/zip/InflaterInputStream
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/zip
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 936715834
|
| allocationSize | ulong: bytes | 32
|
|---|---|---|
| objectClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | scala/collection/immutable/RedBlackTree$Tree
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/collection/immutable
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 51
|
| lineNumber | int | 691
|
| method | Method | |
| descriptor | string | (Lscala/collection/immutable/RedBlackTree$Tree;)Lscala/collection/immutable/RedBlackTree$Tree;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | withRight
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | scala/collection/immutable/RedBlackTree$Tree
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | scala/collection/immutable
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 20601974333
|
ObjectAllocationSample
throttle default profiling startTime eventThread stackTrace 16 17 21 23 24
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | throttle |
|---|---|---|---|
| default | true | true | 150/s |
| profiling | true | true | 300/s |
| Field | Type | Description |
|---|---|---|
| objectClass | Class | Object Class Class of allocated object |
| weight | long: bytes | Sample Weight The relative weight of the sample. Aggregating the weights for a large number of samples, for a particular class, thread or stack trace, gives a statistically accurate representation of the allocation pressure |
Examples 3
| objectClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [I
|
| package | Package | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 143
|
| lineNumber | int | 1934
|
| method | Method | |
| descriptor | string | ()V
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | compile
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/regex/Pattern
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/regex
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1139688083
|
| weight | long: bytes | 1313728
|
| objectClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [B
|
| package | Package | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 10
|
| lineNumber | int | 3863
|
| method | Method | |
| descriptor | string | ([BII)[B
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | copyOfRangeByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1540155000
|
| weight | long: bytes | 1008
|
| objectClass | Class | |
|---|---|---|
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [B
|
| package | Package | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 15
|
| lineNumber | int | 3541
|
| method | Method | |
| descriptor | string | ([BI)[B
|
| hidden | boolean | false
|
| modifiers | int | 9
|
| name | string | copyOf
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 885152000
|
| weight | long: bytes | 1432800
|
JavaErrorThrow
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/ErrorThrownEvent.java
Category: Java Application
An object derived from java.lang.Error has been created. OutOfMemoryErrors are ignored
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| message | string | Message Consider contributing a description to jfreventcollector. |
| thrownClass | Class | Class Consider contributing a description to jfreventcollector. |
Examples 3
| message | string | 'java.lang.Object java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(java.lang.Object, java.lang.Object, int, int, int, int, java.lang.Object)'
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 7
|
| lineNumber | int | 68
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Error
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 18810911542
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/NoSuchMethodError
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| message | string | Found class java.lang.Object, but interface was expected
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 7
|
| lineNumber | int | 68
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Error
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 1512430917
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/IncompatibleClassChangeError
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| message | string | Exception java.lang.ExceptionInInitializerError [in thread "main"]
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 8
|
| lineNumber | int | 86
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/Throwable;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Error
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 32088818042
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/ExceptionInInitializerError
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
FileForce
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/FileForceEvent.java
Category: Java Application
Force updates to be written to file
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| path | string | Path Full path of the file |
| metaData | boolean | Update Metadata Whether the file metadata is updated |
SocketWrite
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/SocketWriteEvent.java
Category: Java Application
Writing data to a socket
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| host | string | Remote Host |
| address | string | Remote Address |
| port | int | Remote Port |
| bytesWritten | long: bytes | Bytes Written Number of bytes written to the socket |
Examples 3
| address | string | 127.0.0.1
|
|---|---|---|
| bytesWritten | long: bytes | 50
|
| host | string | |
| port | int | 56504
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 584
|
| lineNumber | int | 191
|
| method | Method | |
| descriptor | string | ([Ljava/nio/ByteBuffer;II)J
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 32192298542
|
| address | string | 127.0.0.1
|
|---|---|---|
| bytesWritten | long: bytes | 50
|
| host | string | |
| port | int | 52294
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 584
|
| lineNumber | int | 191
|
| method | Method | |
| descriptor | string | ([Ljava/nio/ByteBuffer;II)J
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 39942762000
|
| address | string | 127.0.0.1
|
|---|---|---|
| bytesWritten | long: bytes | 50
|
| host | string | |
| port | int | 52654
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 584
|
| lineNumber | int | 191
|
| method | Method | |
| descriptor | string | ([Ljava/nio/ByteBuffer;II)J
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | true
|
| startTime | long: millis | 45144801625
|
VirtualThreadStart
startTime duration stackTrace 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadStartEvent.java
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| javaThreadId | long | Thread Id |
JavaExceptionThrow
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/ExceptionThrownEvent.java
Category: Java Application
An object derived from java.lang.Exception has been created
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| message | string | Message Consider contributing a description to jfreventcollector. |
| thrownClass | Class | Class Consider contributing a description to jfreventcollector. |
Examples 3
| message | string | scala.Predef$
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 40
|
| lineNumber | int | 298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/Throwable;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Throwable
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 595765958
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/ClassNotFoundException
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| message | string | org.renaissance.harness.ConfigParser
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 40
|
| lineNumber | int | 298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/Throwable;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Throwable
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 670751125
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/ClassNotFoundException
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| message | string | scala.Tuple2
|
|---|---|---|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 40
|
| lineNumber | int | 298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/Throwable;)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | <init>
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Throwable
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 936672417
|
| thrownClass | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/ClassNotFoundException
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
FileWrite
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/FileWriteEvent.java
Category: Java Application
Appearing in: G1GC, ParallelGC, ShenandoahGC, ZGC
Missing in: SerialGC
Writing data to a file
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| path | string | Path Full path of the file, or N/A if a file descriptor was used to create the stream, for example System.out and System.err |
| bytesWritten | long: bytes | Bytes Written Number of bytes written to the file |
Examples 3
| bytesWritten | long: bytes | 8672
|
|---|---|---|
| path | string | harness-133125-7262456833842592188/apache-spark/lib/hadoop-client-runtime-3.3.1.jar
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 678
|
| lineNumber | int | 154
|
| method | Method | |
| descriptor | string | (Ljava/nio/ByteBuffer;)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | sun/nio/ch/FileChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 3495218667
|
| bytesWritten | long: bytes | 16384
|
|---|---|---|
| path | string | harness-124802-11372319207631724376/apache-spark/lib/spark-sql_2.13-3.2.0.jar
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 678
|
| lineNumber | int | 154
|
| method | Method | |
| descriptor | string | (Ljava/nio/ByteBuffer;)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | sun/nio/ch/FileChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 2721627083
|
| bytesWritten | long: bytes | 120
|
|---|---|---|
| path | string | null
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 171
|
| lineNumber | int | 103
|
| method | Method | |
| descriptor | string | ([BII)V
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | write
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/io/FileOutputStream
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/io
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 56404662458
|
VirtualThreadEnd
startTime duration stackTrace 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadEndEvent.java
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled |
|---|---|
| default | false |
| profiling | false |
| Field | Type | Description |
|---|---|---|
| javaThreadId | long | Thread Id |
SocketRead
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/SocketReadEvent.java
Category: Java Application
Reading data from a socket
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| host | string | Remote Host |
| address | string | Remote Address |
| port | int | Remote Port |
| timeout | long: millis | Timeout Value |
| bytesRead | long: bytes | Bytes Read Number of bytes read from the socket |
| endOfStream | boolean | End of Stream If end of stream was reached |
Examples 3
| address | string | 127.0.0.1
|
|---|---|---|
| bytesRead | long: bytes | 65
|
| endOfStream | boolean | false
|
| host | string | |
| port | int | 52660
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 846
|
| lineNumber | int | 72
|
| method | Method | |
| descriptor | string | (Ljava/nio/ByteBuffer;)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 44381456167
|
| timeout | long: millis | 0
|
| address | string | 127.0.0.1
|
|---|---|---|
| bytesRead | long: bytes | 65
|
| endOfStream | boolean | false
|
| host | string | |
| port | int | 56505
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 846
|
| lineNumber | int | 72
|
| method | Method | |
| descriptor | string | (Ljava/nio/ByteBuffer;)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 35699398417
|
| timeout | long: millis | 0
|
| address | string | 127.0.0.1
|
|---|---|---|
| bytesRead | long: bytes | 52
|
| endOfStream | boolean | false
|
| host | string | |
| port | int | 52293
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 846
|
| lineNumber | int | 72
|
| method | Method | |
| descriptor | string | (Ljava/nio/ByteBuffer;)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | sun/nio/ch/SocketChannelImpl
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | sun/nio/ch
|
| type | FrameType | JIT compiled
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 39478155042
|
| timeout | long: millis | 0
|
FileRead
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/FileReadEvent.java
Category: Java Application
Appearing in: SerialGC, ZGC
Missing in: G1GC, ParallelGC, ShenandoahGC
Reading data from a file
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| path | string | Path Full path of the file, or N/A if a file descriptor was used to create the stream, for example System.in |
| bytesRead | long: bytes | Bytes Read Number of bytes read from the file (possibly 0) |
| endOfFile | boolean | End of File If end of file was reached |
Examples 2
| bytesRead | long: bytes | 4
|
|---|---|---|
| endOfFile | boolean | false
|
| path | string | [...]/code/experiments/jfreventcollector/harness-124931-6974251686310067154/apache-spark/lib/activation-1.1.1.jar
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 114
|
| lineNumber | int | 114
|
| method | Method | |
| descriptor | string | ([BII)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/io/RandomAccessFile
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/io
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 30609363666
|
| bytesRead | long: bytes | 4
|
|---|---|---|
| endOfFile | boolean | false
|
| path | string | [...]/code/experiments/jfreventcollector/harness-124622-12434569844652140370/apache-spark/lib/avro-ipc-1.10.2.jar
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 114
|
| lineNumber | int | 114
|
| method | Method | |
| descriptor | string | ([BII)I
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | read
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/io/RandomAccessFile
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/io
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 28227785042
|
VirtualThreadPinned
default profiling startTime duration stackTrace 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadPinnedEvent.java
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 20 ms |
ThreadSleep
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/ThreadSleepEvent.java
Category: Java Application
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | stackTrace | threshold |
|---|---|---|---|
| default | true | true | 20 ms |
| profiling | true | true | 10 ms |
| Field | Type | Description |
|---|---|---|
| time | long: nanos | Sleep Time |
Examples 3
| stackTrace | StackTrace | |
|---|---|---|
| frames | StackFrame | |
| bytecodeIndex | int | 5
|
| lineNumber | int | 474
|
| method | Method | |
| descriptor | string | (Ljdk/internal/event/ThreadSleepEvent;)V
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | afterSleep
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Thread
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 9526259125
|
| time | long: nanos | 10000000
|
| stackTrace | StackTrace | |
|---|---|---|
| frames | StackFrame | |
| bytecodeIndex | int | 5
|
| lineNumber | int | 474
|
| method | Method | |
| descriptor | string | (Ljdk/internal/event/ThreadSleepEvent;)V
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | afterSleep
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Thread
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 8231408208
|
| time | long: nanos | 1000000
|
| stackTrace | StackTrace | |
|---|---|---|
| frames | StackFrame | |
| bytecodeIndex | int | 5
|
| lineNumber | int | 474
|
| method | Method | |
| descriptor | string | (Ljdk/internal/event/ThreadSleepEvent;)V
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | afterSleep
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/lang/Thread
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 7182720167
|
| time | long: nanos | 10000000
|
Java Application Statistics
JavaThreadStatistics
default profiling startTime duration every chunk 11 17 21 23 24 graal vm
Category: Java Application / Statistics
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| activeCount | long | Active Threads Number of live active threads including both daemon and non-daemon threads |
| daemonCount | long | Daemon Threads Number of live daemon threads |
| accumulatedCount | long | Accumulated Threads Number of threads created and also started since JVM start |
| peakCount | long | Peak Threads Peak live thread count since JVM start or when peak count was reset |
Examples 3
ClassLoadingStatistics
default profiling startTime duration every chunk 11 17 21 23 24 graal vm
Category: Java Application / Statistics
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| loadedClassCount | long | Loaded Class Count Number of classes loaded since JVM start |
| unloadedClassCount | long | Unloaded Class Count Number of classes unloaded since JVM start |
Examples 3
ClassLoaderStatistics
default profiling startTime duration every chunk 11 17 21 23 24
Category: Java Application / Statistics
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| classLoader | ClassLoader | Class Loader Consider contributing a description to jfreventcollector. |
| parentClassLoader | ClassLoader | Parent Class Loader Consider contributing a description to jfreventcollector. |
| classLoaderData | ulong: address | ClassLoaderData Pointer Pointer to the ClassLoaderData structure in the JVM |
| classCount | long | Classes Number of loaded classes |
| chunkSize | ulong: bytes | Total Chunk Size Total size of all allocated metaspace chunks (each chunk has several blocks) |
| blockSize | ulong: bytes | Total Block Size Total size of all allocated metaspace blocks (each chunk has several blocks) |
| hiddenClassCount | long 15+ | Hidden Classes Number of hidden classes |
| hiddenChunkSize | ulong: bytes 15+ | Total Hidden Classes Chunk Size Total size of all allocated metaspace chunks for hidden classes (each chunk has several blocks) |
| hiddenBlockSize | ulong: bytes 15+ | Total Hidden Classes Block Size Total size of all allocated metaspace blocks for hidden classes (each chunk has several blocks) |
Examples 3
| blockSize | ulong: bytes | 314328
|
|---|---|---|
| chunkSize | ulong: bytes | 330752
|
| classCount | long | 124
|
| classLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| classLoaderData | ulong: address | 105553151822496
|
| hiddenBlockSize | ulong: bytes | 0
|
| hiddenChunkSize | ulong: bytes | 0
|
| hiddenClassCount | long | 0
|
| parentClassLoader | ClassLoader | |
| name | string | platform
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$PlatformClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| startTime | long: millis | 58734795542
|
| blockSize | ulong: bytes | 5510392
|
|---|---|---|
| chunkSize | ulong: bytes | 5526528
|
| classCount | long | 579
|
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| classLoaderData | ulong: address | 105553177014144
|
| hiddenBlockSize | ulong: bytes | 0
|
| hiddenChunkSize | ulong: bytes | 0
|
| hiddenClassCount | long | 0
|
| parentClassLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| startTime | long: millis | 51863911750
|
| blockSize | ulong: bytes | 5510728
|
|---|---|---|
| chunkSize | ulong: bytes | 5530624
|
| classCount | long | 579
|
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| classLoaderData | ulong: address | 105553170208224
|
| hiddenBlockSize | ulong: bytes | 0
|
| hiddenChunkSize | ulong: bytes | 0
|
| hiddenClassCount | long | 0
|
| parentClassLoader | ClassLoader | |
| name | string | app
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | jdk/internal/loader/ClassLoaders$AppClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/loader
|
| startTime | long: millis | 39222446833
|
ThreadAllocationStatistics
default profiling startTime every chunk 11 17 21 23 24
Category: Java Application / Statistics
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| allocated | ulong: bytes | Allocated Approximate number of bytes allocated since thread start |
| thread | Thread | Thread Consider contributing a description to jfreventcollector. |
Examples 3
| allocated | ulong: bytes | 6654144
|
|---|---|---|
| startTime | long: millis | 14906032000
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-11
|
| javaThreadId | long | 122
|
| osName | string | UCT-akka.actor.default-dispatcher-11
|
| osThreadId | long | 46855
|
| virtual | boolean | false
|
| allocated | ulong: bytes | 1392
|
|---|---|---|
| startTime | long: millis | 16763680292
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | scala-execution-context-global-55
|
| javaThreadId | long | 55
|
| osName | string | scala-execution-context-global-55
|
| osThreadId | long | 35843
|
| virtual | boolean | false
|
| allocated | ulong: bytes | 272
|
|---|---|---|
| startTime | long: millis | 12401705334
|
| thread | Thread | |
| group | ThreadGroup | |
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.internal-dispatcher-4
|
| javaThreadId | long | 102
|
| osName | string | UCT-akka.actor.internal-dispatcher-4
|
| osThreadId | long | 53763
|
| virtual | boolean | false
|
FinalizerStatistics
default profiling startTime end of every chunk 18 21 23 24
Category: Java Application / Statistics
Per class statistics about finalizers
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| finalizableClass | Class | Class Overriding Finalize |
| codeSource | Symbol | Code Source URL from where the class was loaded |
| objects | ulong | Finalizable Objects on Heap Number of objects on heap that can be finalized |
| totalFinalizersRun | ulong | Finalizers Run Total number of finalizers run since JVM start |
Examples 3
| codeSource | Symbol | file://[...]/code/experiments/jfreventcollector/harness-133125-7262456833842592188/twitter-finagle/lib/netty-buffer-4.1.72.Final.jar
|
|---|---|---|
| finalizableClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | io/netty/buffer/PoolThreadCache
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | io/netty/buffer
|
| objects | ulong | 16
|
| startTime | long: millis | 36083795917
|
| totalFinalizersRun | ulong | 0
|
| codeSource | Symbol | file://[...]/code/experiments/jfreventcollector/harness-124622-12434569844652140370/twitter-finagle/lib/finagle-netty4_2.13-21.12.0.jar
|
|---|---|---|
| finalizableClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | com/twitter/finagle/netty4/HashedWheelTimer
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | com/twitter/finagle/netty4
|
| objects | ulong | 1
|
| startTime | long: millis | 84387074208
|
| totalFinalizersRun | ulong | 0
|
| codeSource | Symbol | file://[...]/code/experiments/jfreventcollector/harness-124447-3147988932466435938/twitter-finagle/lib/netty-buffer-4.1.72.Final.jar
|
|---|---|---|
| finalizableClass | Class | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | io/netty/buffer/PoolArena$HeapArena
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/net/URLClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/net
|
| location | string | null
|
| name | string | null
|
| version | string | null
|
| name | string | io/netty/buffer
|
| objects | ulong | 16
|
| startTime | long: millis | 60302801042
|
| totalFinalizersRun | ulong | 0
|
ExceptionStatistics
default profiling startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/ExceptionStatisticsEvent.java
Category: Java Application / Statistics
Number of objects derived from java.lang.Throwable that have been created
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| throwables | long | Exceptions Created |
Examples 3
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 6575097500
|
| throwables | long | 1962
|
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 24296445458
|
| throwables | long | 3982
|
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 51975206042
|
| throwables | long | 205619
|
DirectBufferStatistics
default profiling startTime duration stackTrace 15 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/DirectBufferStatisticsEvent.java
Category: Java Application / Statistics
Statistics of direct buffer
| Configuration | enabled | period |
|---|---|---|
| default | true | 5 s |
| profiling | true | 5 s |
Examples 3
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 21201643875
|
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 50339446667
|
| stackTrace | StackTrace | null
|
|---|---|---|
| startTime | long: millis | 63488245750
|
Java Development Kit
X509Certificate
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/X509CertificateEvent.java
Category: Java Development Kit / Security
Details of X.509 Certificate parsed by JDK
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| algorithm | string | Signature Algorithm |
| serialNumber | string | Serial Number Consider contributing a description to jfreventcollector. |
| subject | string | Subject Consider contributing a description to jfreventcollector. |
| issuer | string | Issuer Consider contributing a description to jfreventcollector. |
| keyType | string | Key Type Consider contributing a description to jfreventcollector. |
| keyLength | int | Key Length |
| certificateId | ulong: certificateId | Certificate Id |
| validFrom | long: epochmillis | Valid From |
| validUntil | long: epochmillis | Valid Until |
Deserialization
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/DeserializationEvent.java
Category: Java Development Kit / Serialization
Results of deserialization and ObjectInputFilter checks
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| filterConfigured | boolean | Filter Configured |
| filterStatus | string | Filter Status Consider contributing a description to jfreventcollector. |
| type | Class | Type Consider contributing a description to jfreventcollector. |
| arrayLength | int | Array Length |
| objectReferences | long | Object References |
| depth | long | Depth |
| bytesRead | long | Bytes Read |
| exceptionType | Class | Exception Type Consider contributing a description to jfreventcollector. |
| exceptionMessage | string | Exception Message Consider contributing a description to jfreventcollector. |
TLSHandshake
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/TLSHandshakeEvent.java
Category: Java Development Kit / Security
Parameters used in TLS Handshake
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| peerHost | string | Peer Host Consider contributing a description to jfreventcollector. |
| peerPort | int | Peer Port |
| protocolVersion | string | Protocol Version Consider contributing a description to jfreventcollector. |
| cipherSuite | string | Cipher Suite Consider contributing a description to jfreventcollector. |
| certificateId | ulong: certificateId | Certificate Id Peer Certificate Id |
X509Validation
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/X509ValidationEvent.java
Category: Java Development Kit / Security
Serial numbers from X.509 Certificates forming chain of trust
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| certificateId | ulong: certificateId | Certificate Id |
| certificatePosition | int | Certificate Position Certificate position in chain of trust, 1 = trust anchor |
| validationCounter | long | Validation Counter |
VirtualThreadSubmitFailed
default profiling startTime duration stackTrace 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/VirtualThreadSubmitFailedEvent.java
Category: Java Development Kit / Threading
Submit of task for virtual thread failed
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| javaThreadId | long | Thread Id |
| exceptionMessage | string | Exception Message Consider contributing a description to jfreventcollector. |
SecurityProviderService
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/SecurityProviderServiceEvent.java
Category: Java Development Kit / Security
Details of Provider.getInstance(String type, String algorithm) calls
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| type | string | Type of Service |
| algorithm | string | Algorithm Name |
| provider | string | Security Provider |
Examples 3
| algorithm | string | NativePRNG
|
|---|---|---|
| provider | string | SUN
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 136
|
| lineNumber | int | 1298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/String;)Ljava/security/Provider$Service;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | getService
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/security/Provider
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 462983542
|
| type | string | SecureRandom
|
| algorithm | string | SHA-1
|
|---|---|---|
| provider | string | SUN
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 136
|
| lineNumber | int | 1298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/String;)Ljava/security/Provider$Service;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | getService
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/security/Provider
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 786168667
|
| type | string | MessageDigest
|
| algorithm | string | SHA-1
|
|---|---|---|
| provider | string | SUN
|
| stackTrace | StackTrace | |
| frames | StackFrame | |
| bytecodeIndex | int | 136
|
| lineNumber | int | 1298
|
| method | Method | |
| descriptor | string | (Ljava/lang/String;Ljava/lang/String;)Ljava/security/Provider$Service;
|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | getService
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/security/Provider
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| startTime | long: millis | 539435958
|
| type | string | MessageDigest
|
SecurityPropertyModification
startTime duration stackTrace 11 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/SecurityPropertyModificationEvent.java
Category: Java Development Kit / Security
Modification of Security property
| Configuration | enabled | stackTrace |
|---|---|---|
| default | false | true |
| profiling | false | true |
| Field | Type | Description |
|---|---|---|
| key | string | Key Consider contributing a description to jfreventcollector. |
| value | string | Value Consider contributing a description to jfreventcollector. |
InitialSecurityProperty
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/InitialSecurityPropertyEvent.java
Category: Java Development Kit / Security
Initial Security Properties
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| key | string | Key Consider contributing a description to jfreventcollector. |
| value | string | Value Consider contributing a description to jfreventcollector. |
Examples 3
| key | string | jdk.jar.disabledAlgorithms
|
|---|---|---|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 22231184875
|
| value | string | MD2, MD5, RSA keySize < 1024, DSA keySize < 1024, SHA1 denyAfter 2019-01-01
|
| key | string | networkaddress.cache.negative.ttl
|
|---|---|---|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 379242875
|
| value | string | 10
|
| key | string | networkaddress.cache.negative.ttl
|
|---|---|---|
| stackTrace | StackTrace | null
|
| startTime | long: millis | 18250957958
|
| value | string | 10
|
Operating System
OSInformation
default profiling startTime duration end of every chunk 11 17 21 23 24 graal vm
Category: Operating System
Description of the OS the JVM runs on, for example, a uname-like output
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| osVersion | string | OS Version |
Examples 3
VirtualizationInformation
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Operating System
Description of the virtualization technology the JVM runs on
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| name | string | Name |
InitialEnvironmentVariable
default profiling startTime end of every chunk 11 17 21 23 24 graal vm
Category: Operating System
Key-value pairs for environment variables at JVM startup
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| key | string | Key |
| value | string | Value |
SystemProcess
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Operating System
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | endChunk |
| profiling | true | endChunk |
| Field | Type | Description |
|---|---|---|
| pid | string | Process Identifier |
| commandLine | string | Command Line |
Examples 3
CPUInformation
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Operating System / Processor
Characteristics and descriptions of the processor(s) the JVM is running on
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| cpu | string | Type |
| description | string | Description |
| sockets | uint | Sockets |
| cores | uint | Cores |
| hwThreads | uint | Hardware Threads |
Examples 3
CPUTimeStampCounter
default profiling startTime duration end of every chunk 11 17 21 23 24
Category: Operating System / Processor
Information about the CPU time stamp mechanism / (RD)TSC
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| fastTimeEnabled | boolean | Fast Time |
| fastTimeAutoEnabled | boolean | Trusted Platform |
| osFrequency | long: hertz | OS Frequency |
| fastTimeFrequency | long: hertz | Fast Time Frequency |
Examples 3
CPULoad
default profiling startTime duration every chunk 11 17 21 23 24
Category: Operating System / Processor
Information about the recent CPU usage of the JVM process
| Configuration | enabled | period |
|---|---|---|
| default | true | 1000 ms |
| profiling | true | 1000 ms |
| Field | Type | Description |
|---|---|---|
| jvmUser | float: percentage | JVM User |
| jvmSystem | float: percentage | JVM System |
| machineTotal | float: percentage | Machine Total |
Examples 3
| jvmSystem | float: percentage | 6.6612905E-4
|
|---|---|---|
| jvmUser | float: percentage | 0.01064864
|
| machineTotal | float: percentage | 0.93257
|
| startTime | long: millis | 7613770458
|
| jvmSystem | float: percentage | 1.3516936E-4
|
|---|---|---|
| jvmUser | float: percentage | 0.0028879915
|
| machineTotal | float: percentage | 0.7451691
|
| startTime | long: millis | 62800246542
|
| jvmSystem | float: percentage | 0.002852563
|
|---|---|---|
| jvmUser | float: percentage | 0.010816634
|
| machineTotal | float: percentage | 0.98157895
|
| startTime | long: millis | 14062372500
|
ThreadCPULoad
default profiling startTime duration eventThread every chunk 11 17 21 23 24 graal vm
Category: Operating System / Processor
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 10 s |
| profiling | true | 10 s |
| Field | Type | Description |
|---|---|---|
| user | float: percentage | User Mode CPU Load User mode thread CPU load |
| system | float: percentage | System Mode CPU Load System mode thread CPU load |
Examples 3
| startTime | long: millis | 10760177417
|
|---|---|---|
| system | float: percentage | 2.137215E-6
|
| user | float: percentage | 6.659235E-5
|
| startTime | long: millis | 11595339875
|
|---|---|---|
| system | float: percentage | 9.2602895E-5
|
| user | float: percentage | 0.0032533891
|
| startTime | long: millis | 10643453375
|
|---|---|---|
| system | float: percentage | 0.0012196376
|
| user | float: percentage | 0.00995647
|
ThreadContextSwitchRate
default profiling startTime duration every chunk 11 17 21 23 24
Category: Operating System / Processor
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 10 s |
| profiling | true | 10 s |
| Field | Type | Description |
|---|---|---|
| switchRate | float: hertz | Switch Rate Number of context switches per second |
NetworkUtilization
default profiling startTime every chunk 11 17 21 23 24
Category: Operating System / Network
No additional description available. Write your own and contribute it to jfreventcollector or directly to the OpenJDK.
| Configuration | enabled | period |
|---|---|---|
| default | true | 5 s |
| profiling | true | 5 s |
| Field | Type | Description |
|---|---|---|
| networkInterface | NetworkInterfaceName | Network Interface Network Interface Name |
| readRate | long: bits-per-second | Read Rate Number of incoming bits per second |
| writeRate | long: bits-per-second | Write Rate Number of outgoing bits per second |
Examples 3
| networkInterface | NetworkInterfaceName | utun5
|
|---|---|---|
| readRate | long: bits-per-second | 75160
|
| startTime | long: millis | 26541870792
|
| writeRate | long: bits-per-second | 197880
|
| networkInterface | NetworkInterfaceName | ap1
|
|---|---|---|
| readRate | long: bits-per-second | 0
|
| startTime | long: millis | 84103802000
|
| writeRate | long: bits-per-second | 1624
|
| networkInterface | NetworkInterfaceName | lo0
|
|---|---|---|
| readRate | long: bits-per-second | 116784
|
| startTime | long: millis | 82395635458
|
| writeRate | long: bits-per-second | 116784
|
PhysicalMemory
default profiling startTime duration every chunk 11 17 21 23 24 graal vm
Category: Operating System / Memory
OS Physical Memory
| Configuration | enabled | period |
|---|---|---|
| default | true | everyChunk |
| profiling | true | everyChunk |
| Field | Type | Description |
|---|---|---|
| totalSize | ulong: bytes | Total Size Total amount of physical memory available to OS |
| usedSize | ulong: bytes | Used Size Total amount of physical memory in use |
Examples 3
ContainerConfiguration
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ContainerConfigurationEvent.java
Category: Operating System
A set of container specific attributes
| Configuration | enabled | period |
|---|---|---|
| default | true | beginChunk |
| profiling | true | beginChunk |
| Field | Type | Description |
|---|---|---|
| containerType | string | Container Type Container type information |
| cpuSlicePeriod | long: microseconds | CPU Slice Period Length of the scheduling period for processes within the container |
| cpuQuota | long: microseconds | CPU Quota Total available run-time allowed during each scheduling period for all tasks in the container |
| cpuShares | long | CPU Shares Relative weighting of processes with the container used for prioritizing the scheduling of processes across all containers running on a host |
| effectiveCpuCount | long | Effective CPU Count Number of effective processors that this container has available to it |
| memorySoftLimit | long: bytes | Memory Soft Limit Hint to the operating system that allows groups to specify the minimum required amount of physical memory |
| memoryLimit | long: bytes | Memory Limit Maximum amount of physical memory that can be allocated in the container |
| swapMemoryLimit | long: bytes | Memory and Swap Limit Maximum amount of physical memory and swap space, in bytes, that can be allocated in the container |
| hostTotalMemory | long: bytes 20+ | Container Host Total Memory Total memory of the host running the container |
ContainerCPUThrottling
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ContainerCPUThrottlingEvent.java
Category: Operating System / Processor
Container CPU throttling related information
| Configuration | enabled | period |
|---|---|---|
| default | true | 30 s |
| profiling | true | 30 s |
| Field | Type | Description |
|---|---|---|
| cpuElapsedSlices | long | CPU Elapsed Slices Number of time-slice periods that have elapsed if a CPU quota has been setup for the container |
| cpuThrottledSlices | long | CPU Throttled Slices Number of time-slice periods that the CPU has been throttled or limited due to exceeding CPU quota |
| cpuThrottledTime | long: nanos | CPU Throttled Time Total time duration, in nanoseconds, that the CPU has been throttled or limited due to exceeding CPU quota |
ContainerMemoryUsage
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ContainerMemoryUsageEvent.java
Category: Operating System / Memory
Container memory usage related information
| Configuration | enabled | period |
|---|---|---|
| default | true | 30 s |
| profiling | true | 30 s |
| Field | Type | Description |
|---|---|---|
| memoryFailCount | long | Memory Fail Count Number of times that user memory requests in the container have exceeded the memory limit |
| memoryUsage | long: bytes | Memory Usage Amount of physical memory, in bytes, that is currently allocated in the current container |
| swapMemoryUsage | long: bytes | Memory and Swap Usage Amount of physical memory and swap space, in bytes, that is currently allocated in the current container |
ContainerCPUUsage
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ContainerCPUUsageEvent.java
Category: Operating System / Processor
Container CPU usage related information
| Configuration | enabled | period |
|---|---|---|
| default | true | 30 s |
| profiling | true | 30 s |
| Field | Type | Description |
|---|---|---|
| cpuTime | long: nanos | CPU Time Aggregate time consumed by all tasks in the container |
| cpuUserTime | long: nanos | CPU User Time Aggregate user time consumed by all tasks in the container |
| cpuSystemTime | long: nanos | CPU System Time Aggregate system time consumed by all tasks in the container |
ContainerIOUsage
default profiling startTime duration stackTrace 17 21 23 24
Source src/jdk.jfr/share/classes/jdk/jfr/events/ContainerIOUsageEvent.java
Category: Operating System / File System
Container IO usage related information
| Configuration | enabled | period |
|---|---|---|
| default | true | 30 s |
| profiling | true | 30 s |
| Field | Type | Description |
|---|---|---|
| serviceRequests | long | Block IO Request Count Number of block IO requests to the disk that have been issued by the container |
| dataTransferred | long: bytes | Block IO Transfer Number of block IO bytes that have been transferred to/from the disk by the container |
ProcessStart
default profiling startTime duration stackTrace 17 21 until JDK 23
Source src/jdk.jfr/share/classes/jdk/jfr/events/ProcessStartEvent.java
Category: Operating System
Operating system process started
| Configuration | enabled | stackTrace |
|---|---|---|
| default | true | true |
| profiling | true | true |
| Field | Type | Description |
|---|---|---|
| pid | long | Process Id |
| directory | string | Directory Consider contributing a description to jfreventcollector. |
| command | string | Command Consider contributing a description to jfreventcollector. |
Truffle Compiler
org.graalvm.compiler.truffle.CompilerStatistics
startTime duration every 1s graal vm only
Category: Truffle Compiler
Truffe Compiler Statistics
| Field | Type | Description |
|---|---|---|
| compiledMethods | ulong | Compiled Methods Compiled Methods |
| bailouts | ulong | Bailouts Bailouts |
| invalidations | ulong | Invalidated Compilations Invalidated Compilations |
| compiledCodeSize | ulong: bytes | Compilation Resulting Size Compilation Resulting Size |
| totalTime | long: millis | Total Time Total Time |
| peakTime | long: millis | Peak Time Peak Time |
org.graalvm.compiler.truffle.Deoptimization
startTime duration graal vm only
Category: Truffle Compiler
Truffle Call Target Deoptimization
| Field | Type | Description |
|---|---|---|
| source | string | Source Compiled Source |
| language | string | Language Guest Language |
| rootFunction | string | Root Function Root Function |
org.graalvm.compiler.truffle.AssumptionInvalidation
startTime duration stackTrace graal vm only
Category: Truffle Compiler
Truffle Assumption Invalidation
| Field | Type | Description |
|---|---|---|
| source | string | Source Compiled Source |
| language | string | Language Guest Language |
| rootFunction | string | Root Function Root Function |
| reason | string | Reason Invalidation Reason |
org.graalvm.compiler.truffle.CompilationFailure
startTime duration graal vm only
Category: Truffle Compiler
Truffe Compilation Failures
| Field | Type | Description |
|---|---|---|
| source | string | Source Compiled Source |
| language | string | Language Guest Language |
| rootFunction | string | Root Function Root Function |
| permanentFailure | boolean | Permanent Failure Permanent Failure |
| failureReason | string | Failure Reason Failure Reason |
org.graalvm.compiler.truffle.Compilation
startTime duration graal vm only
Category: Truffle Compiler
Truffe Compilation
| Field | Type | Description |
|---|---|---|
| source | string | Source Compiled Source |
| language | string | Language Guest Language |
| rootFunction | string | Root Function Root Function |
| success | boolean | Succeeded Compilation Status |
| compiledCodeSize | uint: bytes | Compiled Code Size Compiled Code Size |
| compiledCodeAddress | long | Compiled Code Address Compiled Code Address |
| inlinedCalls | uint | Inlined Calls Inlined Calls |
| dispatchedCalls | uint | Dispatched Calls Dispatched Calls |
| graalNodeCount | uint | Graal Nodes Graal Node Count |
| peNodeCount | uint | Truffle Nodes Truffle Node Count |
| peTime | ulong | Partial Evaluation Time Partial Evaluation Time in Milliseconds |
Types
Bytecode
Bytecode Instruction
| Field | Type | Description |
|---|---|---|
| bytecode | string | Instruction |
CalleeMethod
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Class |
| name | string | Method Name |
| descriptor | string | Method Descriptor |
Examples 3
ChunkHeader
Chunk Header No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| payload array | byte | Payload |
Class
Java Class
| Field | Type | Description |
|---|---|---|
| classLoader | ClassLoader | Class Loader Consider contributing a description to jfreventcollector. |
| name | Symbol | Name Consider contributing a description to jfreventcollector. |
| package | Package | Package Consider contributing a description to jfreventcollector. |
| modifiers | int | Access Modifiers |
| hidden | boolean 15+ | Hidden |
ClassLoader
Java Class Loader
| Field | Type | Description |
|---|---|---|
| type | Class | Type Consider contributing a description to jfreventcollector. |
| name | Symbol | Name Consider contributing a description to jfreventcollector. |
CodeBlobType
Code Blob Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
Examples 3
CompilerPhaseType
Compiler Phase Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| phase | string | Phase |
CompilerType
Compiler Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| compiler | string | Compiler |
CopyFailed
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| objectCount | ulong | Object Count |
| firstSize | ulong: bytes | First Failed Object Size |
| smallestSize | ulong: bytes | Smallest Failed Object Size |
| totalSize | ulong: bytes | Total Object Size |
DeoptimizationAction
Deoptimization Action No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| action | string | Action |
DeoptimizationReason
Deoptimization Reason No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| reason | string | Reason |
FlagValueOrigin
Flag Value Origin No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| origin | string | Origin |
FrameType
Frame type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| description | string | Description |
G1EvacuationStatistics
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| gcId | uint | GC Identifier |
| allocated | ulong: bytes | Allocated Total memory allocated by PLABs |
| wasted | ulong: bytes | Wasted Total memory wasted within PLABs due to alignment or refill |
| used | ulong: bytes | Used Total memory occupied by objects within PLABs |
| undoWaste | ulong: bytes | Undo Wasted Total memory wasted due to allocation undo within PLABs |
| regionEndWaste | ulong: bytes | Region End Wasted Total memory wasted at the end of regions due to refill |
| regionsRefilled | uint | Region Refills Number of regions refilled |
| numPlabsFilled | ulong 20+ | PLAB Fills Number of PLABs filled |
| directAllocated | ulong: bytes | Allocated (direct) Total memory allocated using direct allocation outside of PLABs |
| numDirectAllocated | ulong 20+ | Direct allocations Number of direct allocations |
| failureUsed | ulong: bytes | Used (failure) Total memory occupied by objects in regions where evacuation failed |
| failureWaste | ulong: bytes | Wasted (failure) Total memory left unused in regions where evacuation failed |
Examples 2
| allocated | ulong: bytes | 227592
|
|---|---|---|
| directAllocated | ulong: bytes | 11062208
|
| failureUsed | ulong: bytes | 0
|
| failureWaste | ulong: bytes | 0
|
| gcId | uint | 73
|
| numDirectAllocated | ulong | 5
|
| numPlabsFilled | ulong | 7504122885671534260
|
| regionEndWaste | ulong: bytes | 524344
|
| regionsRefilled | uint | 6
|
| undoWaste | ulong: bytes | 0
|
| used | ulong: bytes | 210000
|
| wasted | ulong: bytes | 3192
|
| allocated | ulong: bytes | 9715600
|
|---|---|---|
| directAllocated | ulong: bytes | 522352
|
| failureUsed | ulong: bytes | 0
|
| failureWaste | ulong: bytes | 0
|
| gcId | uint | 9
|
| numDirectAllocated | ulong | 6147041496
|
| numPlabsFilled | ulong | 0
|
| regionEndWaste | ulong: bytes | 0
|
| regionsRefilled | uint | 5
|
| undoWaste | ulong: bytes | 0
|
| used | ulong: bytes | 9234784
|
| wasted | ulong: bytes | 8464
|
G1HeapRegionType
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
G1 Heap Region Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
G1YCType
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
G1 YC Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
GCCause
GC Cause No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| cause | string | Cause |
Examples 3
GCName
GC Name No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| name | string | Name |
GCThresholdUpdater
GC Threshold Updater No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| updater | string | Updater |
GCWhen
GC When No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| when | string | When |
InflateCause
Inflation Cause No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| cause | string | Cause |
MetadataType
Metadata Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
MetaspaceObjectType
Metaspace Object Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
MetaspaceSizes
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| committed | ulong: bytes | Committed Committed memory for this space |
| used | ulong: bytes | Used Bytes allocated by objects in the space |
| reserved | ulong: bytes | Reserved Reserved memory for this space |
Method
Java Method
| Field | Type | Description |
|---|---|---|
| type | Class | Type Consider contributing a description to jfreventcollector. |
| name | Symbol | Name Consider contributing a description to jfreventcollector. |
| descriptor | Symbol | Descriptor Consider contributing a description to jfreventcollector. |
| modifiers | int | Access Modifiers |
| hidden | boolean | Hidden |
Module
Module No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| name | Symbol | Name Consider contributing a description to jfreventcollector. |
| version | Symbol | Version Consider contributing a description to jfreventcollector. |
| location | Symbol | Location Consider contributing a description to jfreventcollector. |
| classLoader | ClassLoader | Class Loader Consider contributing a description to jfreventcollector. |
NMTType
NarrowOopMode
Narrow Oop Mode No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| mode | string | Mode |
NetworkInterfaceName
Network Interface No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| networkInterface | string | Network Interface Network Interface Name |
ObjectSpace
Appearing in: ParallelGC
Missing in: G1GC, SerialGC, ShenandoahGC, ZGC
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| start | ulong: address | Start Address Start address of the space |
| end | ulong: address | End Address End address of the space |
| used | ulong: bytes | Used Bytes allocated by objects in the space |
| size | ulong: bytes | Size Size of the space |
Examples 3
OldObject
Old Object No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| address | ulong: address | Memory Address |
| type | Class | Java Class |
| description | string | Object Description Object description |
| referrer | Reference | Referrer Object Object referencing this object |
Examples 3
| address | ulong: address | 30171583624
|
|---|---|---|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 0
|
| name | string | [Ljava/util/concurrent/ForkJoinTask;
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
| address | ulong: address | 31582016760
|
|---|---|---|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 48
|
| name | string | java/util/concurrent/locks/AbstractQueuedSynchronizer$ExclusiveNode
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent/locks
|
| address | ulong: address | 30167254608
|
|---|---|---|
| description | string | null
|
| referrer | Reference | null
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/util/concurrent/ConcurrentHashMap$Node
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util/concurrent
|
OldObjectArray
Old Object Array No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| size | int | Array Size Size of array |
| index | int | Index Index in the array |
OldObjectField
Old Object Field No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| name | string | Field Name of field |
| modifiers | short | Field Modifiers Field modifiers |
OldObjectGcRoot
GC Root No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| description | string | Root Description Root information |
| system | OldObjectRootSystem | System The subsystem of origin for the root |
| type | OldObjectRootType | Type The root type |
OldObjectRootSystem
GC Root System No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| system | string | System |
OldObjectRootType
GC Root Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
Package
Package No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| name | Symbol | Name Consider contributing a description to jfreventcollector. |
| module | Module | Module Consider contributing a description to jfreventcollector. |
| exported | boolean | Exported |
Reference
Reference No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| array | OldObjectArray | Array Information Array or null if it is not an array |
| field | OldObjectField | Field Information Field or null if it is an array |
| object | OldObject | Object Object holder for this reference |
| skip | int | Skip Value The object is this many hops away |
ReferenceType
Reference Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
ShenandoahHeapRegionState
Appearing in: ShenandoahGC
Missing in: G1GC, ParallelGC, SerialGC, ZGC
Shenandoah Heap Region State No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| state | string | State |
StackFrame
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| method | Method | Java Method |
| lineNumber | int | Line Number |
| bytecodeIndex | int | Bytecode Index |
| type | FrameType | Frame Type |
Examples 3
| bytecodeIndex | int | 10
|
|---|---|---|
| lineNumber | int | 3863
|
| method | Method | |
| descriptor | string | ([BII)[B
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | copyOfRangeByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| bytecodeIndex | int | 0
|
|---|---|---|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| bytecodeIndex | int | 20
|
|---|---|---|
| lineNumber | int | 222
|
| method | Method | |
| descriptor | string | (Ljava/security/CodeSource;)Ljava/security/ProtectionDomain;
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | getProtectionDomain
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/security/SecureClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
StackTrace
Stacktrace No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| truncated | boolean | Truncated |
| frames array | StackFrame struct | Stack Frames |
Symbol
Symbol No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| string | string | String |
Examples 3
Thread
Thread No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| osName | string | OS Thread Name |
| osThreadId | long | OS Thread Id |
| javaName | string | Java Thread Name |
| javaThreadId | long | Java Thread Id |
| group | ThreadGroup | Java Thread Group |
| virtual | boolean 19+ | Virtual Thread |
ThreadGroup
Thread Group No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| parent | ThreadGroup | Parent Consider contributing a description to jfreventcollector. |
| name | string | Name |
Examples 3
| name | string | main
|
|---|---|---|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| name | string | system
|
|---|---|---|
| parent | ThreadGroup | null
|
ThreadState
VMOperationType
VM Operation Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
VirtualSpace
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| start | ulong: address | Start Address Start address of the virtual space |
| committedEnd | ulong: address | Committed End Address End address of the committed memory for the virtual space |
| committedSize | ulong: bytes | Committed Size Size of the committed memory for the virtual space |
| reservedEnd | ulong: address | Reserved End Address End address of the reserved memory for the virtual space |
| reservedSize | ulong: bytes | Reserved Size Size of the reserved memory for the virtual space |
Examples 3
ZPageTypeType
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Z Page Type No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| type | string | Type |
ZStatisticsCounterType
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Z Statistics Counter No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| counter | string | Counter |
ZStatisticsSamplerType
Appearing in: ZGC
Missing in: G1GC, ParallelGC, SerialGC, ShenandoahGC
Z Statistics Sampler No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Field | Type | Description |
|---|---|---|
| sampler | string | Sampler |
XML Content Types
address
bits-per-second
Annotation: jdk.jfr.DataAmount(BITS), jdk.jfr.Frequency
bytes
bytes-per-second
Appearing in: G1GC
Missing in: ParallelGC, SerialGC, ShenandoahGC, ZGC
Annotation: jdk.jfr.DataAmount(BYTES), jdk.jfr.Frequency
certificateId
Annotation: jdk.jfr.events.CertificateId
epochmillis
Annotation: jdk.jfr.Timestamp(MILLISECONDS_SINCE_EPOCH)
hertz
microseconds
millis
Annotation: jdk.jfr.Timespan(MILLISECONDS)
nanos
Annotation: jdk.jfr.Timespan(NANOSECONDS)
percentage
tickspan
tickstamp
Annotation: jdk.jfr.Timestamp(TICKS)
XML Types
Class
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const Klass* |
|---|---|
| Field Type | const Klass* |
| Java Type | java.lang.Class |
Examples 3
| classLoader | ClassLoader | |
|---|---|---|
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 32
|
| name | string | java/security/SecureClassLoader$1
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
ClassLoader
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const ClassLoaderData* |
|---|---|
| Field Type | const ClassLoaderData* |
Method
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const Method* |
|---|---|
| Field Type | const Method* |
Examples 3
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
|---|---|---|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| descriptor | string | (Ljava/security/CodeSource;)Ljava/security/ProtectionDomain;
|
|---|---|---|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | getProtectionDomain
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/security/SecureClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| descriptor | string | (JB)V
|
|---|---|---|
| hidden | boolean | false
|
| modifiers | int | 1
|
| name | string | putByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | jdk/internal/misc/Unsafe
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | jdk/internal/misc
|
Module
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const ModuleEntry* |
|---|---|
| Field Type | const ModuleEntry* |
Examples 3
Package
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const PackageEntry* |
|---|---|
| Field Type | const PackageEntry* |
Examples 3
StackTrace
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | u8 |
|---|---|
| Field Type | u8 |
| Java Type | jdk.types.StackTrace |
Examples 3
| frames | StackFrame | |
|---|---|---|
| bytecodeIndex | int | 20
|
| lineNumber | int | 222
|
| method | Method | |
| descriptor | string | (Ljava/security/CodeSource;)Ljava/security/ProtectionDomain;
|
| hidden | boolean | false
|
| modifiers | int | 2
|
| name | string | getProtectionDomain
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 33
|
| name | string | java/security/SecureClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/security
|
| type | FrameType | Interpreted
|
| … | ||
| truncated | boolean | false
|
| frames | StackFrame | |
|---|---|---|
| bytecodeIndex | int | 10
|
| lineNumber | int | 3863
|
| method | Method | |
| descriptor | string | ([BII)[B
|
| hidden | boolean | false
|
| modifiers | int | 10
|
| name | string | copyOfRangeByte
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 49
|
| name | string | java/util/Arrays
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/util
|
| type | FrameType | Inlined
|
| … | ||
| truncated | boolean | false
|
| frames | StackFrame | |
|---|---|---|
| bytecodeIndex | int | 0
|
| lineNumber | int | -1
|
| method | Method | |
| descriptor | string | (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
|
| hidden | boolean | false
|
| modifiers | int | 264
|
| name | string | defineClass1
|
| type | Class | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| hidden | boolean | false
|
| modifiers | int | 1057
|
| name | string | java/lang/ClassLoader
|
| package | Package | |
| exported | boolean | true
|
| module | Module | |
| classLoader | ClassLoader | |
| name | string | bootstrap
|
| type | Class | null
|
| location | string | jrt:/java.base
|
| name | string | java.base
|
| version | string | 21.0.1
|
| name | string | java/lang
|
| type | FrameType | Native
|
| … | ||
| truncated | boolean | false
|
Thread
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | u8 |
|---|---|
| Field Type | u8 |
| Java Type | java.lang.Thread |
Examples 3
| group | ThreadGroup | |
|---|---|---|
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | scala-execution-context-global-58
|
| javaThreadId | long | 58
|
| osName | string | scala-execution-context-global-58
|
| osThreadId | long | 38147
|
| virtual | boolean | false
|
| group | ThreadGroup | |
|---|---|---|
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.internal-dispatcher-4
|
| javaThreadId | long | 102
|
| osName | string | UCT-akka.actor.internal-dispatcher-4
|
| osThreadId | long | 53763
|
| virtual | boolean | false
|
| group | ThreadGroup | |
|---|---|---|
| name | string | main
|
| parent | ThreadGroup | |
| name | string | system
|
| parent | ThreadGroup | null
|
| javaName | string | UCT-akka.actor.default-dispatcher-5
|
| javaThreadId | long | 55
|
| osName | string | UCT-akka.actor.default-dispatcher-5
|
| osThreadId | long | 39171
|
| virtual | boolean | false
|
Ticks
unsigned
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const Ticks& |
|---|---|
| Field Type | Ticks |
| Java Type | long |
| Content Type | tickstamp |
Tickspan
unsigned
No description available. Write your own and contribute it to jfreventcollector. or directly to the OpenJDK.
| Parameter Type | const Tickspan& |
|---|---|
| Field Type | Tickspan |
| Java Type | long |
| Content Type | tickspan |
boolean
| Parameter Type | bool |
|---|---|
| Field Type | bool |
| Java Type | boolean |
byte
| Parameter Type | s1 |
|---|---|
| Field Type | s1 |
| Java Type | byte |
char
| Parameter Type | char |
|---|---|
| Field Type | char |
| Java Type | char |
double
| Parameter Type | double |
|---|---|
| Field Type | double |
| Java Type | double |
float
| Parameter Type | float |
|---|---|
| Field Type | float |
| Java Type | float |
int
long
short
| Parameter Type | s2 |
|---|---|
| Field Type | s2 |
| Java Type | short |
string
| Parameter Type | const char* |
|---|---|
| Field Type | const char* |
| Java Type | java.lang.String |
ubyte
uint
unsigned
| Parameter Type | unsigned |
|---|---|
| Field Type | unsigned |
| Java Type | int |
ulong
unsigned
| Parameter Type | u8 |
|---|---|
| Field Type | u8 |
| Java Type | long |