Quelle  metadata.xml   Sprache: XML

<?xml version="1.0" encoding="utf-8"?>

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 under the terms of the GNU General Public License version 2 only, as
 published by the Free Software Foundation.

 This code is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 version 2 for more details (a copy is included in the LICENSE file that
 accompanied this code).

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<Metadata>

  <!-- Internal events are only to be used during development, i.e. temporary time measurements, without the need
       to modify .jfc files etc. Code that commits an internal event should NEVER be checked in.

       Example usage:

       #include "jfr/jfrEvents.hpp"

       void foo() {
         EventDuration event;
         bar();
         baz();
         event.commit();
       }

       $ make images
       $ java -XX:StartFlightRecording:settings=none,filename=dump.jfr ...
       ...
       $ jfr print dump.jfr

       Programmatic access:
       try (var rf = new RecordingFile(Path.of("dump.jfr)) {
           while (rf.hasMoreEvents()) {
               RecordedEvent e = rf.readEvent();
               System.out.println(e.getName() + " " + e.getDuration()));
           }
       };
  !-->

  <Event name="Duration" category="Java Virtual Machine, Internal" label="Duration" startTime="true" thread="true" stackTrace="false" internal="true">
  </Event>

  <Event name="Instant" category="Java Virtual Machine, Internal" label="Instant" startTime="false" thread="true" stackTrace="false" internal="true">
  </Event>

  <Event name="Value" category="Java Virtual Machine, Internal" label="Value" startTime="false" thread="true" stackTrace="false" internal="true">
    <Field type="ulong" name="value" label="Value"/>
  </Event>

  <Event name="Text" category="Java Virtual Machine, Internal" label="Text" startTime="false" thread="true" stackTrace="false" internal="true">
    <Field type="string" name="text" label="Text"/>
  </Event>

  <Event name="ZThreadDebug" category="Java Virtual Machine, GC, Detailed" label="ZGC Thread Event" description="Temporary latency measurements used during development and debugging of ZGC" thread="true" internal="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
    <Field type="string" name="name" label="Name" />
  </Event>

  <!-- Ordinary and experimental events !-->

  <Event name="ThreadStart" category="Java Application" label="Java Thread Start" thread="true" startTime="false" stackTrace="true">
    <Field type="Thread" name="thread" label="New Java Thread" />
    <Field type="Thread" name="parentThread" label="Parent Java Thread" />
  </Event>

  <Event name="ThreadEnd" category="Java Application" label="Java Thread End" thread="true" startTime="false">
    <Field type="Thread" name="thread" label="Java Thread" />
  </Event>

  <Event name="ThreadPark" category="Java Application" label="Java Thread Park" thread="true" stackTrace="true">
    <Field type="Class" name="parkedClass" label="Class Parked On" />
    <Field type="long" contentType="nanos" name="timeout" label="Park Timeout" />
    <Field type="long" contentType="epochmillis" name="until" label="Park Until" />
    <Field type="ulong" contentType="address" name="address" label="Address of Object Parked" relation="JavaMonitorAddress" />
  </Event>

  <Event name="JavaMonitorEnter" category="Java Application" label="Java Monitor Blocked" thread="true" stackTrace="true">
    <Field type="Class" name="monitorClass" label="Monitor Class" />
    <Field type="Thread" name="previousOwner" label="Previous Monitor Owner" />
    <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  </Event>

  <Event name="JavaMonitorWait" category="Java Application" label="Java Monitor Wait" description="Waiting on a Java monitor" thread="true" stackTrace="true">
    <Field type="Class" name="monitorClass" label="Monitor Class" description="Class of object waited on" />
    <Field type="Thread" name="notifier" label="Notifier Thread" description="Notifying Thread" />
    <Field type="long" contentType="millis" name="timeout" label="Timeout" description="Maximum wait time" />
    <Field type="boolean" name="timedOut" label="Timed Out" description="Wait has been timed out" />
    <Field type="ulong" contentType="address" name="address" label="Monitor Address" description="Address of object waited on" relation="JavaMonitorAddress" />
  </Event>

  <Event name="JavaMonitorInflate" category="Java Application" label="Java Monitor Inflated" thread="true" stackTrace="true">
    <Field type="Class" name="monitorClass" label="Monitor Class" />
    <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
    <Field type="InflateCause" name="cause" label="Monitor Inflation Cause" description="Cause of inflation" />
  </Event>

  <Event name="SyncOnValueBasedClass" category="Java Virtual Machine, Diagnostics" label="Value Based Class Synchronization" thread="true" stackTrace="true" startTime="false" experimental="true">
    <Field type="Class" name="valueBasedClass" label="Value Based Class" />
  </Event>

  <Event name="ContinuationFreeze" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Yield" description="Invocation of Continuation.yield()"
    thread="true" stackTrace="true">
    <Field type="Thread" name="carrierThread" label="Carrier Thread" description="Thread enlisted as a carrier" />
    <Field type="Class" name="continuationClass" label="Continuation Class" />
    <Field type="ushort" name="interpretedFrames" label="Interpreted Frames" />
    <Field type="ushort" contentType="bytes" name="size" label="Stack Size" />
  </Event>

  <Event name="ContinuationThaw" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Continue" description="Invocation of Continuation.run() on a started continuation"
    thread="true" stackTrace="true">
    <Field type="Thread" name="carrierThread" label="Carrier Thread" description="Thread enlisted as a carrier" />
    <Field type="Class" name="continuationClass" label="Continuation Class" />
    <Field type="ushort" name="interpretedFrames" label="Interpreted Frames" />
    <Field type="ushort" contentType="bytes" name="size" label="Stack Size" />
  </Event>

  <Event name="ContinuationFreezeFast" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Freeze Fast" thread="true" stackTrace="false" startTime="false">
    <Field type="ulong" name="id" label="Continuation ID" />
    <Field type="uint" name="size" label="Size" />
    <Field type="boolean" name="allocate" label="Allocated New" />
  </Event>

  <Event name="ContinuationFreezeSlow" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Freeze Slow" thread="true" stackTrace="false" startTime="false">
    <Field type="ulong" name="id" label="Continuation ID" />
  </Event>

  <Event name="ContinuationThawFast" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Thaw Fast" thread="true" stackTrace="false" startTime="false">
    <Field type="ulong" name="id" label="Continuation ID" />
    <Field type="boolean" name="full" label="Full" />
    <Field type="uint" name="size" label="Size" />
  </Event>

  <Event name="ContinuationThawSlow" experimental="true" category="Java Virtual Machine, Runtime" label="Continuation Thaw Slow" thread="true" stackTrace="false" startTime="false">
    <Field type="ulong" name="id" label="Continuation ID" />
  </Event>

  <Event name="ReservedStackActivation" category="Java Virtual Machine, Runtime" label="Reserved Stack Activation"
    description="Activation of Reserved Stack Area caused by stack overflow with ReservedStackAccess annotated method in call stack" thread="true" stackTrace="true"
    startTime="false">
    <Field type="Method" name="method" label="Java Method" />
  </Event>

  <Event name="ClassLoad" category="Java Virtual Machine, Class Loading" label="Class Load" thread="true" stackTrace="true">
    <Field type="Class" name="loadedClass" label="Loaded Class" />
    <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
    <Field type="ClassLoader" name="initiatingClassLoader" label="Initiating Class Loader" />
  </Event>

  <Event name="ClassDefine" category="Java Virtual Machine, Class Loading" label="Class Define" thread="true" stackTrace="true" startTime="false">
    <Field type="Class" name="definedClass" label="Defined Class" />
    <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
  </Event>

  <Event name="ClassRedefinition" category="Java Virtual Machine, Class Loading" label="Class Redefinition" thread="false" stackTrace="false" startTime="false">
    <Field type="Class" name="redefinedClass" label="Redefined Class" />
    <Field type="int" name="classModificationCount" label="Class Modification Count" description="The number of times the class has changed"/>
    <Field type="ulong" name="redefinitionId" label="Class Redefinition Id" relation="ClassRedefinitionId"/>
  </Event>

  <Event name="RedefineClasses" category="Java Virtual Machine, Class Loading" label="Redefine Classes" thread="true" stackTrace="true">
    <Field type="int" name="classCount" label="Class Count" />
    <Field type="ulong" name="redefinitionId" label="Class Redefinition Id" relation="ClassRedefinitionId" />
  </Event>

  <Event name="RetransformClasses" category="Java Virtual Machine, Class Loading" label="Retransform Classes" thread="true" stackTrace="true">
    <Field type="int" name="classCount" label="Class Count"/>
    <Field type="ulong" name="redefinitionId" label="Class Redefinition Id" relation="ClassRedefinitionId" />
  </Event>

  <Event name="ClassUnload" category="Java Virtual Machine, Class Loading" label="Class Unload" thread="true" startTime="false">
    <Field type="Class" name="unloadedClass" label="Unloaded Class" />
    <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
  </Event>

  <Event name="IntFlagChanged" category="Java Virtual Machine, Flag" label="Int Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="int" name="oldValue" label="Old Value" />
    <Field type="int" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="UnsignedIntFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Int Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="uint" name="oldValue" label="Old Value" />
    <Field type="uint" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="LongFlagChanged" category="Java Virtual Machine, Flag" label="Long Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="long" name="oldValue" label="Old Value" />
    <Field type="long" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="UnsignedLongFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Long Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="ulong" name="oldValue" label="Old Value" />
    <Field type="ulong" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="DoubleFlagChanged" category="Java Virtual Machine, Flag" label="Double Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="double" name="oldValue" label="Old Value" />
    <Field type="double" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="BooleanFlagChanged" category="Java Virtual Machine, Flag" label="Boolean Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="boolean" name="oldValue" label="Old Value" />
    <Field type="boolean" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Event name="StringFlagChanged" category="Java Virtual Machine, Flag" label="String Flag Changed" startTime="false">
    <Field type="string" name="name" label="Name" />
    <Field type="string" name="oldValue" label="Old Value" />
    <Field type="string" name="newValue" label="New Value" />
    <Field type="FlagValueOrigin" name="origin" label="Origin" />
  </Event>

  <Type name="VirtualSpace">
    <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the virtual space" />
    <Field type="ulong" contentType="address" name="committedEnd" label="Committed End Address" description="End address of the committed memory for the virtual space" />
    <Field type="ulong" contentType="bytes" name="committedSize" label="Committed Size" description="Size of the committed memory for the virtual space" />
    <Field type="ulong" contentType="address" name="reservedEnd" label="Reserved End Address" description="End address of the reserved memory for the virtual space" />
    <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" description="Size of the reserved memory for the virtual space" />
  </Type>

  <Type name="ObjectSpace">
    <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the space" />
    <Field type="ulong" contentType="address" name="end" label="End Address" description="End address of the space" />
    <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
    <Field type="ulong" contentType="bytes" name="size" label="Size" description="Size of the space" />
  </Type>

  <Event name="GCHeapSummary" category="Java Virtual Machine, GC, Heap" label="Heap Summary" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCWhen" name="when" label="When" />
    <Field type="VirtualSpace" struct="true" name="heapSpace" label="Heap Space" />
    <Field type="ulong" contentType="bytes" name="heapUsed" label="Heap Used" description="Bytes allocated by objects in the heap" />
  </Event>

  <Type name="MetaspaceSizes">
    <Field type="ulong" contentType="bytes" name="committed" label="Committed" description="Committed memory for this space" />
    <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
    <Field type="ulong" contentType="bytes" name="reserved" label="Reserved" description="Reserved memory for this space" />
  </Type>

  <Event name="MetaspaceSummary" category="Java Virtual Machine, GC, Heap" label="Metaspace Summary" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCWhen" name="when" label="When" />
    <Field type="ulong" contentType="bytes" name="gcThreshold" label="GC Threshold" />
    <Field type="MetaspaceSizes" struct="true" name="metaspace" label="Total" />
    <Field type="MetaspaceSizes" struct="true" name="dataSpace" label="Data" />
    <Field type="MetaspaceSizes" struct="true" name="classSpace" label="Class" />
  </Event>

  <Event name="MetaspaceGCThreshold" category="Java Virtual Machine, GC, Metaspace" label="Metaspace GC Threshold" startTime="false">
    <Field type="ulong" contentType="bytes" name="oldValue" label="Old Value" />
    <Field type="ulong" contentType="bytes" name="newValue" label="New Value" />
    <Field type="GCThresholdUpdater" name="updater" label="Updater" />
  </Event>

  <Event name="MetaspaceAllocationFailure" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Allocation Failure" startTime="false"
    stackTrace="true">
    <Field type="ClassLoader" name="classLoader" label="Class Loader" />
    <Field type="boolean" name="hiddenClassLoader" label="Hidden Class Loader" />
    <Field type="ulong" contentType="bytes" name="size" label="Size" />
    <Field type="MetadataType" name="metadataType" label="Metadata Type" />
    <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
  </Event>

  <Event name="MetaspaceOOM" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Out of Memory" startTime="false" stackTrace="true">
    <Field type="ClassLoader" name="classLoader" label="Class Loader" />
    <Field type="boolean" name="hiddenClassLoader" label="Hidden Class Loader" />
    <Field type="ulong" contentType="bytes" name="size" label="Size" />
    <Field type="MetadataType" name="metadataType" label="Metadata Type" />
    <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
  </Event>

  <Event name="MetaspaceChunkFreeListSummary" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Chunk Free List Summary" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCWhen" name="when" label="When" />
    <Field type="MetadataType" name="metadataType" label="Metadata Type" />
    <Field type="ulong" name="specializedChunks" label="Specialized Chunks" />
    <Field type="ulong" contentType="bytes" name="specializedChunksTotalSize" label="Specialized Chunks Total Size" />
    <Field type="ulong" name="smallChunks" label="Small Chunks" />
    <Field type="ulong" contentType="bytes" name="smallChunksTotalSize" label="Small Chunks Total Size" />
    <Field type="ulong" name="mediumChunks" label="Medium Chunks" />
    <Field type="ulong" contentType="bytes" name="mediumChunksTotalSize" label="Medium Chunks Total Size" />
    <Field type="ulong" name="humongousChunks" label="Humongous Chunks" />
    <Field type="ulong" contentType="bytes" name="humongousChunksTotalSize" label="Humongous Chunks Total Size" />
  </Event>

  <Event name="PSHeapSummary" category="Java Virtual Machine, GC, Heap" label="Parallel Scavenge Heap Summary" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCWhen" name="when" label="When" />
    <Field type="VirtualSpace" struct="true" name="oldSpace" label="Old Space" />
    <Field type="ObjectSpace" struct="true" name="oldObjectSpace" label="Old Object Space" />
    <Field type="VirtualSpace" struct="true" name="youngSpace" label="Young Space" />
    <Field type="ObjectSpace" struct="true" name="edenSpace" label="Eden Space" />
    <Field type="ObjectSpace" struct="true" name="fromSpace" label="From Space" />
    <Field type="ObjectSpace" struct="true" name="toSpace" label="To Space" />
  </Event>

  <Event name="G1HeapSummary" category="Java Virtual Machine, GC, Heap" label="G1 Heap Summary" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCWhen" name="when" label="When" />
    <Field type="ulong" contentType="bytes" name="edenUsedSize" label="Eden Used Size" />
    <Field type="ulong" contentType="bytes" name="edenTotalSize" label="Eden Total Size" />
    <Field type="ulong" contentType="bytes" name="survivorUsedSize" label="Survivor Used Size" />
    <Field type="uint" name="numberOfRegions" label="Number of Regions" />
  </Event>

  <Event name="GarbageCollection" category="Java Virtual Machine, GC, Collector" label="Garbage Collection" description="Garbage collection performed by the JVM">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="GCName" name="name" label="Name" description="The name of the Garbage Collector" />
    <Field type="GCCause" name="cause" label="Cause" description="The reason for triggering this Garbage Collection" />
    <Field type="Tickspan" name="sumOfPauses" label="Sum of Pauses" description="Sum of all the times in which Java execution was paused during the garbage collection" />
    <Field type="Tickspan" name="longestPause" label="Longest Pause" description="Longest individual pause during the garbage collection" />
  </Event>

  <Event name="SystemGC" category="Java Virtual Machine, GC, Collector" label="System GC" stackTrace="true" startTime="true" thread="true">
    <Field type="boolean" name="invokedConcurrent" label="Invoked Concurrent" />
  </Event>

  <Event name="ParallelOldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Parallel Old Garbage Collection"
    description="Extra information specific to Parallel Old Garbage Collections">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="address" name="densePrefix" label="Dense Prefix" description="The address of the dense prefix, used when compacting" />
  </Event>

  <Event name="YoungGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Young Garbage Collection" description="Extra information specific to Young Garbage Collections">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="uint" name="tenuringThreshold" label="Tenuring Threshold" />
  </Event>

  <Event name="OldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Old Garbage Collection" description="Extra information specific to Old Garbage Collections">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
  </Event>

  <Event name="G1GarbageCollection" category="Java Virtual Machine, GC, Collector" label="G1 Young Garbage Collection" description="Extra information specific to G1 Young Garbage Collections">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="G1YCType" name="type" label="Type"/>
  </Event>

  <Event name="G1MMU" category="Java Virtual Machine, GC, Detailed" label="G1 MMU Information" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="long" contentType="millis" name="timeSlice" label="Time Slice" description="Time slice used to calculate MMU" />
    <Field type="long" contentType="millis" name="gcTime" label="GC Time" description="Time stopped because of GC during last time slice" />
    <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Max time allowed to be spent on GC during last time slice" />
  </Event>

  <Event name="EvacuationInformation" category="Java Virtual Machine, GC, Detailed" label="Evacuation Information" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="uint" name="cSetRegions" label="Collection Set Regions" />
    <Field type="ulong" contentType="bytes" name="cSetUsedBefore" label="Collection Set Before" description="Memory usage before GC in the collection set regions" />
    <Field type="ulong" contentType="bytes" name="cSetUsedAfter" label="Collection Set After" description="Memory usage after GC in the collection set regions" />
    <Field type="uint" name="allocationRegions" label="Allocation Regions" description="Regions chosen as allocation regions during evacuation (includes survivors and old space regions)" />
    <Field type="ulong" contentType="bytes" name="allocationRegionsUsedBefore" label="Allocation Regions Before" description="Memory usage before GC in allocation regions" />
    <Field type="ulong" contentType="bytes" name="allocationRegionsUsedAfter" label="Allocation Regions After" description="Memory usage after GC in allocation regions" />
    <Field type="ulong" contentType="bytes" name="bytesCopied" label="Bytes Copied" />
    <Field type="uint" name="regionsFreed" label="Regions Freed" />
  </Event>

  <Event name="GCReferenceStatistics" category="Java Virtual Machine, GC, Reference" label="GC Reference Statistics" startTime="false"
    description="Total count of processed references during GC">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ReferenceType" name="type" label="Type" />
    <Field type="ulong" name="count" label="Total Count" />
  </Event>

  <Type name="CopyFailed">
    <Field type="ulong" name="objectCount" label="Object Count" />
    <Field type="ulong" contentType="bytes" name="firstSize" label="First Failed Object Size" />
    <Field type="ulong" contentType="bytes" name="smallestSize" label="Smallest Failed Object Size" />
    <Field type="ulong" contentType="bytes" name="totalSize" label="Total Object Size" />
  </Type>

  <Event name="ObjectCountAfterGC" category="Java Virtual Machine, GC, Detailed" startTime="false" label="Object Count after GC">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="Class" name="objectClass" label="Object Class" />
    <Field type="long" name="count" label="Count" />
    <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
  </Event>

  <Type name="G1EvacuationStatistics">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Total memory allocated by PLABs" />
    <Field type="ulong" contentType="bytes" name="wasted" label="Wasted" description="Total memory wasted within PLABs due to alignment or refill" />
    <Field type="ulong" contentType="bytes" name="used" label="Used" description="Total memory occupied by objects within PLABs" />
    <Field type="ulong" contentType="bytes" name="undoWaste" label="Undo Wasted" description="Total memory wasted due to allocation undo within PLABs" />
    <Field type="ulong" contentType="bytes" name="regionEndWaste" label="Region End Wasted" description="Total memory wasted at the end of regions due to refill" />
    <Field type="uint" name="regionsRefilled" label="Region Refills" description="Number of regions refilled" />
    <Field type="ulong" name="numPlabsFilled" label="PLAB Fills" description="Number of PLABs filled" />
    <Field type="ulong" contentType="bytes" name="directAllocated" label="Allocated (direct)" description="Total memory allocated using direct allocation outside of PLABs" />
    <Field type="ulong" name="numDirectAllocated" label="Direct allocations" description="Number of direct allocations" />
    <Field type="ulong" contentType="bytes" name="failureUsed" label="Used (failure)" description="Total memory occupied by objects in regions where evacuation failed" />
    <Field type="ulong" contentType="bytes" name="failureWaste" label="Wasted (failure)" description="Total memory left unused in regions where evacuation failed" />
  </Type>

  <Event name="G1EvacuationYoungStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Statistics for Young" startTime="false"
    description="Memory related evacuation statistics during GC for the young generation">
    <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
  </Event>

  <Event name="G1EvacuationOldStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Memory Statistics for Old" startTime="false"
    description="Memory related evacuation statistics during GC for the old generation">
    <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
  </Event>

  <Event name="G1BasicIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Basic IHOP Statistics" startTime="false"
    description="Basic statistics related to current IHOP calculation">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="bytes" name="threshold" label="Current IHOP Threshold" description="Current IHOP threshold" />
    <Field type="float" contentType="percentage" name="thresholdPercentage" label="Current IHOP Threshold" description="Current IHOP threshold in percent of old generation" />
    <Field type="ulong" contentType="bytes" name="targetOccupancy" label="Target Occupancy" description="Target old generation occupancy to reach at the start of mixed GC" />
    <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
    <Field type="ulong" contentType="bytes" name="recentMutatorAllocationSize" label="Recent Mutator Allocation Size"
      description="Mutator allocation during mutator operation in the most recent interval" />
    <Field type="long" contentType="millis" name="recentMutatorDuration" label="Recent Mutator Duration" description="Time the mutator ran in the most recent interval" />
    <Field type="double" contentType="bytes-per-second" name="recentAllocationRate" label="Recent Allocation Rate" description="Allocation rate of the mutator in the most recent interval in bytes/second" />
    <Field type="long" contentType="millis" name="lastMarkingDuration" label="Last Marking Duration" description="Last time from the end of the last concurrent start to the first mixed GC" />
  </Event>

  <Event name="G1AdaptiveIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Adaptive IHOP Statistics" startTime="false"
    description="Statistics related to current adaptive IHOP calculation">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="bytes" name="threshold" label="Threshold" description="Current IHOP Threshold" />
    <Field type="float" contentType="percentage" name="thresholdPercentage" label="Threshold" description="Current IHOP threshold in percent of the internal target occupancy" />
    <Field type="ulong" contentType="bytes" name="ihopTargetOccupancy" label="IHOP Target Occupancy" description="Internal target old generation occupancy to reach at the start of mixed GC" />
    <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
    <Field type="ulong" contentType="bytes" name="additionalBufferSize" label="Additional Buffer" description="Additional buffer size" experimental="true" />
    <Field type="double" contentType="bytes-per-second" name="predictedAllocationRate" label="Predicted Allocation Rate" description="Current predicted allocation rate for the mutator in bytes/second" />
    <Field type="long" contentType="millis" name="predictedMarkingDuration" label="Predicted Marking Duration"
      description="Current predicted time from the end of the last concurrent start to the first mixed GC" />
    <Field type="boolean" name="predictionActive" label="Prediction Active" description="Indicates whether the adaptive IHOP prediction is active" />
  </Event>

  <Event name="PromoteObjectInNewPLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion in new PLAB"
    description="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."
    thread="true" stackTrace="false" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
    <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
    <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
    <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
      description="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." />
    <Field type="boolean" name="tenured" label="Tenured" description="True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space" />
    <Field type="ulong" contentType="bytes" name="plabSize" label="PLAB Size" description="Size of the allocated PLAB to which the object was copied" />
  </Event>

  <Event name="PromoteObjectOutsidePLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion outside PLAB"
    description="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."
    thread="true" stackTrace="false" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
    <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
    <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
    <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
      description="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." />
    <Field type="boolean" name="tenured" label="Tenured" description="True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space" />
  </Event>

  <Event name="PromotionFailed" category="Java Virtual Machine, GC, Detailed" label="Promotion Failed" startTime="false" description="Promotion of an object failed">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="CopyFailed" struct="true" name="promotionFailed" label="Promotion Failed Data" />
    <Field type="Thread" name="thread" label="Running thread" />
  </Event>

  <Event name="EvacuationFailed" category="Java Virtual Machine, GC, Detailed" label="Evacuation Failed" startTime="false" description="Evacuation of an object failed">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="CopyFailed" struct="true" name="evacuationFailed" label="Evacuation Failed Data" />
  </Event>

  <Event name="ConcurrentModeFailure" category="Java Virtual Machine, GC, Detailed" label="Concurrent Mode Failure" startTime="false" description="Concurrent Mode failed">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
  </Event>

  <Event name="GCCPUTime" category="Java Virtual Machine, GC, Detailed" label="GC CPU Time" description="GC CPU Time information. Supported: G1GC, ParallelGC and SerialGC"
    stackTrace="false" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="nanos" name="userTime" label="User Time" />
    <Field type="ulong" contentType="nanos" name="systemTime" label="System Time" />
    <Field type="ulong" contentType="nanos" name="realTime" label="Real Time" />
  </Event>

  <Event name="GCPhasePause" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhasePauseLevel1" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 1" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhasePauseLevel2" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 2" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhasePauseLevel3" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 3" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhasePauseLevel4" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 4" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhaseConcurrent" category="Java Virtual Machine, GC, Phases" label="GC Phase Concurrent" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhaseConcurrentLevel1" category="Java Virtual Machine, GC, Phases" label="GC Phase Concurrent Level 1" thread="true">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="GCPhaseParallel" category="Java Virtual Machine, GC, Phases" label="GC Phase Parallel"
         startTime="true" thread="true" description="GC phases for parallel workers">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
    <Field type="uint" name="gcWorkerId" label="GC Worker Identifier" />
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="AllocationRequiringGC" category="Java Virtual Machine, GC, Detailed" label="Allocation Requiring GC" thread="true" stackTrace="true"
    startTime="false">
    <Field type="uint" name="gcId" label="Pending GC Identifier" relation="GcId" />
    <Field type="ulong" contentType="bytes" name="size" label="Allocation Size" />
  </Event>

  <Event name="TenuringDistribution" category="Java Virtual Machine, GC, Detailed" label="Tenuring Distribution" startTime="false">
    <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
    <Field type="uint" name="age" label="Age" />
    <Field type="ulong" contentType="bytes" name="size" label="Size" />
  </Event>

  <Event name="G1HeapRegionTypeChange" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Type Change" description="Information about a G1 heap region type change"
    startTime="false">
    <Field type="uint" name="index" label="Index" />
    <Field type="G1HeapRegionType" name="from" label="From" />
    <Field type="G1HeapRegionType" name="to" label="To" />
    <Field type="ulong" contentType="address" name="start" label="Start" />
    <Field type="ulong" contentType="bytes" name="used" label="Used" />
  </Event>

  <Event name="JITRestart" category="Java Virtual Machine, Compiler" label="JIT Restart"
         description="Restart of the JIT compilers after they were stopped"
         stackTrace="false" startTime="false" thread="true">
    <Field type="ulong" contentType="bytes" name="freedMemory" label="Freed Memory" />
    <Field type="ulong" contentType="bytes" name="codeCacheMaxCapacity" label="Code Cache Maximum Capacity" />
  </Event>

  <Event name="Compilation" category="Java Virtual Machine, Compiler" label="Compilation"
         description="Results of method compilation attempts"
         thread="true">
    <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
    <Field type="CompilerType" name="compiler" label="Compiler" />
    <Field type="Method" name="method" label="Method" />
    <Field type="ushort" name="compileLevel" label="Compilation Level" />
    <Field type="boolean" name="succeded" label="Succeeded" />
    <Field type="boolean" name="isOsr" label="On Stack Replacement" />
    <Field type="ulong" contentType="bytes" name="codeSize" label="Compiled Code Size" />
    <Field type="ulong" contentType="bytes" name="inlinedBytes" label="Inlined Code Size" />
  </Event>

  <Event name="CompilerPhase" category="Java Virtual Machine, Compiler" label="Compiler Phase"
         description="Describes various phases of the compilation process like inlining or string optimization related phases"
         thread="true">
    <Field type="CompilerPhaseType" name="phase" label="Compile Phase" />
    <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
    <Field type="ushort" name="phaseLevel" label="Phase Level" />
  </Event>

  <Event name="CompilationFailure" category="Java Virtual Machine, Compiler" label="Compilation Failure"
         description="In case a JIT compilation failed, a compilation failure is triggered, reporting the reason"
         thread="true" startTime="false">
    <Field type="string" name="failureMessage" label="Failure Message" />
    <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
  </Event>

  <Type name="CalleeMethod">
    <Field type="string" name="type" label="Class" />
    <Field type="string" name="name" label="Method Name" />
    <Field type="string" name="descriptor" label="Method Descriptor" />
  </Type>

  <Event name="CompilerInlining" category="Java Virtual Machine, Compiler, Optimization" label="Method Inlining"
         description="Describes the result of a method inlining attempt"
         thread="true" startTime="false">
    <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
    <Field type="Method" name="caller" label="Caller Method" />
    <Field type="CalleeMethod" name="callee" struct="true" label="Callee Method" />
    <Field type="boolean" name="succeeded" label="Succeeded" />
    <Field type="string" name="message" label="Message" />
    <Field type="int" name="bci" label="Bytecode Index" />
  </Event>

  <Event name="CodeCacheFull" category="Java Virtual Machine, Code Cache" label="Code Cache Full"
         description="A code heap is full, this leads to disabling the compiler"
         thread="true" startTime="false">
    <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
    <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
    <Field type="ulong" contentType="address" name="commitedTopAddress" label="Commited Top" />
    <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
    <Field type="int" name="entryCount" label="Entries" />
    <Field type="int" name="methodCount" label="Methods" />
    <Field type="int" name="adaptorCount" label="Adaptors" />
    <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
    <Field type="int" name="fullCount" label="Full Count" />
    <Field type="ulong" contentType="bytes" name="codeCacheMaxCapacity" label="Code Cache Maximum Capacity" />
  </Event>

  <Event name="Deoptimization" category="Java Virtual Machine, Compiler" label="Deoptimization"
         description="Describes the detection of an uncommon situation in a compiled method which may lead to deoptimization of the method"
         thread="true" stackTrace="true" startTime="false">
    <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
    <Field type="CompilerType" name="compiler" label="Compiler" />
    <Field type="Method" name="method" label="Method" />
    <Field type="int" name="lineNumber" label="Line Number" />
    <Field type="int" name="bci" label="Bytecode Index" />
    <Field type="Bytecode" name="instruction" label="Instruction" />
    <Field type="DeoptimizationReason" name="reason" label="Reason"/>
    <Field type="DeoptimizationAction" name="action" label="Action"/>
  </Event>

  <Event name="SafepointBegin" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Begin" description="Safepointing begin" thread="true">
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
    <Field type="int" name="totalThreadCount" label="Total Threads" description="The total number of threads at the start of safe point" />
    <Field type="int" name="jniCriticalThreadCount" label="JNI Critical Threads" description="The number of threads in JNI critical sections" />
  </Event>

  <Event name="SafepointStateSynchronization" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint State Synchronization" description="Synchronize run state of threads"
    thread="true">
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
    <Field type="int" name="initialThreadCount" label="Initial Threads" description="The number of threads running at the beginning of state check" />
    <Field type="int" name="runningThreadCount" label="Running Threads" description="The number of threads still running" />
    <Field type="int" name="iterations" label="Iterations" description="Number of state check iterations" />
  </Event>

  <Event name="SafepointCleanup" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup" description="Safepointing begin running cleanup tasks"
    thread="true">
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  </Event>

  <Event name="SafepointCleanupTask" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup Task" description="Safepointing begin running cleanup tasks"
    thread="true">
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
    <Field type="string" name="name" label="Task Name" description="The task name" />
  </Event>

  <Event name="SafepointEnd" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint End" description="Safepointing end" thread="true">
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  </Event>

  <Event name="ExecuteVMOperation" category="Java Virtual Machine, Runtime" label="VM Operation" description="Execution of a VM Operation" thread="true">
    <Field type="VMOperationType" name="operation" label="Operation" />
    <Field type="boolean" name="safepoint" label="At Safepoint" description="If the operation occurred at a safepoint" />
    <Field type="boolean" name="blocking" label="Caller Blocked" description="If the calling thread was blocked until the operation was complete" />
    <Field type="Thread" name="caller" label="Caller" transition="from"
      description="Thread requesting operation. If non-blocking, will be set to 0 indicating thread is unknown" />
    <Field type="ulong" name="safepointId" label="Safepoint Identifier" description="The safepoint (if any) under which this operation was completed"
      relation="SafepointId" />
  </Event>

  <Event name="Shutdown" category="Java Virtual Machine, Runtime" label="JVM Shutdown" description="JVM shutting down" thread="true" stackTrace="true"
    startTime="false">
    <Field type="string" name="reason" label="Reason" description="Reason for JVM shutdown" />
  </Event>

  <Event name="ObjectAllocationInNewTLAB" category="Java Application" label="Allocation in new TLAB" description="Allocation in new Thread Local Allocation Buffer"
    thread="true" stackTrace="true" startTime="false">
    <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
    <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
    <Field type="ulong" contentType="bytes" name="tlabSize" label="TLAB Size" />
  </Event>

  <Event name="ObjectAllocationOutsideTLAB" category="Java Application" label="Allocation outside TLAB" description="Allocation outside Thread Local Allocation Buffers"
    thread="true" stackTrace="true" startTime="false">
    <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
    <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
  </Event>

  <Event name="ObjectAllocationSample" category="Java Application" label="Object Allocation Sample" thread="true" stackTrace="true" startTime="false" throttle="true">
    <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
    <Field type="long" contentType="bytes" name="weight" label="Sample Weight"
      description="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" />
  </Event>

  <Event name="OldObjectSample" category="Java Virtual Machine, Profiling" label="Old Object Sample" description="A potential memory leak" stackTrace="true" thread="true"
    startTime="false" cutoff="true">
    <Field type="Ticks" name="allocationTime" label="Allocation Time" />
    <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" />
    <Field type="Tickspan" name="objectAge" label="Object Age" />
    <Field type="ulong" contentType="bytes" name="lastKnownHeapUsage" label="Last Known Heap Usage" />
    <Field type="OldObject" name="object" label="Object" />
    <Field type="int" name="arrayElements" label="Array Elements" description="If the object is an array, the number of elements, or -1 if it is not an array" />
    <Field type="OldObjectGcRoot" name="root" label="GC Root" />
  </Event>

  <Event name="NativeMemoryUsage" category="Java Virtual Machine, Memory" label="Native Memory Usage Per Type"
    description="Native memory usage for a given memory type in the JVM" period="everyChunk">
    <Field type="string" name="type" label="Memory Type" description="Type used for the native memory allocation" />
    <Field type="ulong" contentType="bytes" name="reserved" label="Reserved Memory" description="Reserved bytes for this type" />
    <Field type="ulong" contentType="bytes" name="committed" label="Committed Memory" description="Committed bytes for this type" />
  </Event>

  <Event name="NativeMemoryUsageTotal" category="Java Virtual Machine, Memory" label="Total Native Memory Usage"
    description="Total native memory usage for the JVM. Might not be the exact sum of the NativeMemoryUsage events due to timeing." period="everyChunk">
    <Field type="ulong" contentType="bytes" name="reserved" label="Reserved Memory" description="Total amount of reserved bytes for the JVM" />
    <Field type="ulong" contentType="bytes" name="committed" label="Committed Memory" description="Total amount of committed bytes for the JVM" />
  </Event>

  <Event name="DumpReason" category="Flight Recorder" label="Recording Reason"
         description="Who requested the recording and why"
         startTime="false">
    <Field type="string" name="reason" label="Reason" description="Reason for writing recording data to disk" />
    <Field type="int" name="recordingId" label="Recording Id" description="Id of the recording that triggered the dump, or -1 if it was not related to a recording" />
  </Event>

  <Event name="DataLoss" category="Flight Recorder" label="Data Loss"
         description="Data could not be copied out from a buffer, typically because of contention"
         startTime="false">
    <Field type="ulong" contentType="bytes" name="amount" label="Amount" description="Amount lost data" />
    <Field type="ulong" contentType="bytes" name="total" label="Total" description="Total lost amount for thread" />
  </Event>

  <Event name="JVMInformation" category="Java Virtual Machine" label="JVM Information"
         description="Description of JVM and the Java application"
         period="endChunk">
    <Field type="string" name="jvmName" label="JVM Name" />
    <Field type="string" name="jvmVersion" label="JVM Version" />
    <Field type="string" name="jvmArguments" label="JVM Command Line Arguments" />
    <Field type="string" name="jvmFlags" label="JVM Settings File Arguments" />
    <Field type="string" name="javaArguments" label="Java Application Arguments" />
    <Field type="long" contentType="epochmillis" name="jvmStartTime" label="JVM Start Time" />
    <Field type="long" name="pid" label="Process Identifier" />
     </Event>

  <Event name="OSInformation" category="Operating System" label="OS Information"
         description="Description of the OS the JVM runs on, for example, a uname-like output"
         period="endChunk">
    <Field type="string" name="osVersion" label="OS Version" />
  </Event>

  <Event name="VirtualizationInformation" category="Operating System" label="Virtualization Information"
         description="Description of the virtualization technology the JVM runs on"
         period="endChunk">
    <Field type="string" name="name" label="Name" />
  </Event>

  <Event name="InitialSystemProperty" category="Java Virtual Machine" label="Initial System Property" description="System Property at JVM start" period="endChunk">
    <Field type="string" name="key" label="Key" />
    <Field type="string" name="value" label="Value" />
  </Event>

  <Event name="InitialEnvironmentVariable" category="Operating System" label="Initial Environment Variable"
         description="Key-value pairs for environment variables at JVM startup"
         period="endChunk">
    <Field type="string" name="key" label="Key" />
    <Field type="string" name="value" label="Value" />
  </Event>

  <Event name="SystemProcess" category="Operating System" label="System Process" period="endChunk">
    <Field type="string" name="pid" label="Process Identifier" />
    <Field type="string" name="commandLine" label="Command Line" />
  </Event>

  <Event name="CPUInformation" category="Operating System, Processor" label="CPU Information" period="endChunk">
    <Field type="string" name="cpu" label="Type" />
    <Field type="string" name="description" label="Description" />
    <Field type="uint" name="sockets" label="Sockets" />
    <Field type="uint" name="cores" label="Cores" />
    <Field type="uint" name="hwThreads" label="Hardware Threads" />
  </Event>

  <Event name="CPUTimeStampCounter" category="Operating System, Processor" label="CPU Time Stamp Counter" period="endChunk">
    <Field type="boolean" name="fastTimeEnabled" label="Fast Time" />
    <Field type="boolean" name="fastTimeAutoEnabled" label="Trusted Platform" />
    <Field type="long" contentType="hertz" name="osFrequency" label="OS Frequency" />
    <Field type="long" contentType="hertz" name="fastTimeFrequency" label="Fast Time Frequency" />
  </Event>

  <Event name="CPULoad" category="Operating System, Processor" label="CPU Load" description="OS CPU Load" period="everyChunk">
    <Field type="float" contentType="percentage" name="jvmUser" label="JVM User" />
    <Field type="float" contentType="percentage" name="jvmSystem" label="JVM System" />
    <Field type="float" contentType="percentage" name="machineTotal" label="Machine Total" />
  </Event>

  <Event name="ThreadCPULoad" category="Operating System, Processor" label="Thread CPU Load" period="everyChunk" thread="true">
    <Field type="float" contentType="percentage" name="user" label="User Mode CPU Load" description="User mode thread CPU load" />
    <Field type="float" contentType="percentage" name="system" label="System Mode CPU Load" description="System mode thread CPU load" />
  </Event>

  <Event name="ThreadContextSwitchRate" category="Operating System, Processor" label="Thread Context Switch Rate" period="everyChunk">
    <Field type="float" contentType="hertz" name="switchRate" label="Switch Rate" description="Number of context switches per second" />
  </Event>

  <Event name="NetworkUtilization" category="Operating System, Network" label="Network Utilization" period="everyChunk">
    <Field type="NetworkInterfaceName" name="networkInterface" label="Network Interface" description="Network Interface Name"/>
    <Field type="long" contentType="bits-per-second" name="readRate" label="Read Rate" description="Number of incoming bits per second"/>
    <Field type="long" contentType="bits-per-second" name="writeRate" label="Write Rate" description="Number of outgoing bits per second"/>
  </Event>

  <Event name="JavaThreadStatistics" category="Java Application, Statistics" label="Java Thread Statistics" period="everyChunk">
    <Field type="long" name="activeCount" label="Active Threads" description="Number of live active threads including both daemon and non-daemon threads" />
    <Field type="long" name="daemonCount" label="Daemon Threads" description="Number of live daemon threads" />
    <Field type="long" name="accumulatedCount" label="Accumulated Threads" description="Number of threads created and also started since JVM start" />
    <Field type="long" name="peakCount" label="Peak Threads" description="Peak live thread count since JVM start or when peak count was reset" />
  </Event>

  <Event name="ClassLoadingStatistics" category="Java Application, Statistics" label="Class Loading Statistics" period="everyChunk">
    <Field type="long" name="loadedClassCount" label="Loaded Class Count" description="Number of classes loaded since JVM start" />
    <Field type="long" name="unloadedClassCount" label="Unloaded Class Count" description="Number of classes unloaded since JVM start" />
  </Event>

  <Event name="ClassLoaderStatistics" category="Java Application, Statistics" label="Class Loader Statistics" period="everyChunk">
    <Field type="ClassLoader" name="classLoader" label="Class Loader" />
    <Field type="ClassLoader" name="parentClassLoader" label="Parent Class Loader" />
    <Field type="ulong" contentType="address" name="classLoaderData" label="ClassLoaderData Pointer" description="Pointer to the ClassLoaderData structure in the JVM" />
    <Field type="long" name="classCount" label="Classes" description="Number of loaded classes" />
    <Field type="ulong" contentType="bytes" name="chunkSize" label="Total Chunk Size" description="Total size of all allocated metaspace chunks (each chunk has several blocks)" />
    <Field type="ulong" contentType="bytes" name="blockSize" label="Total Block Size" description="Total size of all allocated metaspace blocks (each chunk has several blocks)" />
    <Field type="long" name="hiddenClassCount" label="Hidden Classes" description="Number of hidden classes" />
    <Field type="ulong" contentType="bytes" name="hiddenChunkSize" label="Total Hidden Classes Chunk Size"
      description="Total size of all allocated metaspace chunks for hidden classes (each chunk has several blocks)" />
    <Field type="ulong" contentType="bytes" name="hiddenBlockSize" label="Total Hidden Classes Block Size"
      description="Total size of all allocated metaspace blocks for hidden classes (each chunk has several blocks)" />
  </Event>

  <Event name="SymbolTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="Symbol Table Statistics" period="everyChunk">
    <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
    <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
    <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
    <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
    <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
    <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
    <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
    <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
    <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
  </Event>

  <Event name="StringTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="String Table Statistics" period="everyChunk">
    <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
    <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
    <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
    <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
    <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
    <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
    <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
    <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
    <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
  </Event>

  <Event name="ThreadAllocationStatistics" category="Java Application, Statistics" label="Thread Allocation Statistics" period="everyChunk">
    <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Approximate number of bytes allocated since thread start" />
    <Field type="Thread" name="thread" label="Thread" />
  </Event>

  <Event name="PhysicalMemory" category="Operating System, Memory" label="Physical Memory" description="OS Physical Memory" period="everyChunk">
    <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" description="Total amount of physical memory available to OS" />
    <Field type="ulong" contentType="bytes" name="usedSize" label="Used Size" description="Total amount of physical memory in use" />
  </Event>

  <Event name="ExecutionSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample" description="Snapshot of a threads state"
    period="everyChunk">
    <Field type="Thread" name="sampledThread" label="Thread" />
    <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
    <Field type="ThreadState" name="state" label="Thread State" />
  </Event>

  <Event name="NativeMethodSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample Native" description="Snapshot of a threads state when in native"
    period="everyChunk">
    <Field type="Thread" name="sampledThread" label="Thread" />
    <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
    <Field type="ThreadState" name="state" label="Thread State" />
  </Event>

  <Event name="ThreadDump" category="Java Virtual Machine, Runtime" label="Thread Dump" period="everyChunk">
    <Field type="string" name="result" label="Thread Dump" />
  </Event>

  <Event name="NativeLibrary" category="Java Virtual Machine, Runtime" label="Native Library" period="everyChunk">
    <Field type="string" name="name" label="Name" />
    <Field type="ulong" contentType="address" name="baseAddress" label="Base Address" description="Starting address of the module" />
    <Field type="ulong" contentType="address" name="topAddress" label="Top Address" description="Ending address of the module" />
  </Event>

  <Event name="ModuleRequire" category="Java Virtual Machine, Runtime, Modules" label="Module Require" thread="false" period="everyChunk"
    description="A directed edge representing a dependency">
    <Field type="Module" name="source" label="Source Module" />
    <Field type="Module" name="requiredModule" label="Required Module" />
  </Event>

  <Event name="ModuleExport" category="Java Virtual Machine, Runtime, Modules" label="Module Export" thread="false" period="everyChunk">
    <Field type="Package" name="exportedPackage" label="Exported Package" />
    <Field type="Module" name="targetModule" label="Target Module"
      description="Module to which the package is qualifiedly exported. If null or N/A, the package is unqualifiedly exported" />
  </Event>

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