1 <?xml version="1.0" encoding="utf-8"?>
   2 
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   5  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   7  This code is free software; you can redistribute it and/or modify it
   8  under the terms of the GNU General Public License version 2 only, as
   9  published by the Free Software Foundation.
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  11  This code is distributed in the hope that it will be useful, but WITHOUT
  12  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  version 2 for more details (a copy is included in the LICENSE file that
  15  accompanied this code).
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  17  You should have received a copy of the GNU General Public License version
  18  2 along with this work; if not, write to the Free Software Foundation,
  19  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  21  Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  or visit www.oracle.com if you need additional information or have any
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  26 
  27 <Metadata>
  28 
  29   <Event name="ThreadStart" category="Java Application" label="Java Thread Start" thread="true" startTime="false">
  30     <Field type="Thread" name="thread" label="Java Thread" />
  31   </Event>
  32 
  33   <Event name="ThreadEnd" category="Java Application" label="Java Thread End" thread="true" startTime="false">
  34     <Field type="Thread" name="thread" label="Java Thread" />
  35   </Event>
  36 
  37   <Event name="ThreadSleep" category="Java Application" label="Java Thread Sleep" thread="true" stackTrace="true">
  38     <Field type="long" contentType="millis" name="time" label="Sleep Time" />
  39   </Event>
  40 
  41   <Event name="ThreadPark" category="Java Application" label="Java Thread Park" thread="true" stackTrace="true">
  42     <Field type="Class" name="parkedClass" label="Class Parked On" />
  43     <Field type="long" contentType="nanos" name="timeout" label="Park Timeout" />
  44     <Field type="long" contentType="epochmillis" name="until" label="Park Until" />
  45     <Field type="ulong" contentType="address" name="address" label="Address of Object Parked" relation="JavaMonitorAddress" />
  46   </Event>
  47 
  48   <Event name="JavaMonitorEnter" category="Java Application" label="Java Monitor Blocked" thread="true" stackTrace="true">
  49     <Field type="Class" name="monitorClass" label="Monitor Class" />
  50     <Field type="Thread" name="previousOwner" label="Previous Monitor Owner" />
  51     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  52   </Event>
  53 
  54   <Event name="JavaMonitorWait" category="Java Application" label="Java Monitor Wait" description="Waiting on a Java monitor" thread="true" stackTrace="true">
  55     <Field type="Class" name="monitorClass" label="Monitor Class" description="Class of object waited on" />
  56     <Field type="Thread" name="notifier" label="Notifier Thread" description="Notifying Thread" />
  57     <Field type="long" contentType="millis" name="timeout" label="Timeout" description="Maximum wait time" />
  58     <Field type="boolean" name="timedOut" label="Timed Out" description="Wait has been timed out" />
  59     <Field type="ulong" contentType="address" name="address" label="Monitor Address" description="Address of object waited on" relation="JavaMonitorAddress" />
  60   </Event>
  61 
  62   <Event name="JavaMonitorInflate" category="Java Application" label="Java Monitor Inflated" thread="true" stackTrace="true">
  63     <Field type="Class" name="monitorClass" label="Monitor Class" />
  64     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  65     <Field type="InflateCause" name="cause" label="Monitor Inflation Cause" description="Cause of inflation" />
  66   </Event>
  67 
  68   <Event name="BiasedLockRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Revocation" description="Revoked bias of object" thread="true"
  69     stackTrace="true">
  70     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  71     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  72     <Field type="Thread" name="previousOwner" label="Previous Owner" description="Thread owning the bias before revocation" />
  73   </Event>
  74 
  75   <Event name="BiasedLockSelfRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Self Revocation" description="Revoked bias of object biased towards own thread"
  76     thread="true" stackTrace="true">
  77     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  78   </Event>
  79 
  80   <Event name="BiasedLockClassRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Class Revocation" description="Revoked biases for all instances of a class"
  81     thread="true" stackTrace="true">
  82     <Field type="Class" name="revokedClass" label="Revoked Class" description="Class whose biased locks were revoked" />
  83     <Field type="boolean" name="disableBiasing" label="Disable Further Biasing" description="Whether further biasing for instances of this class will be allowed" />
  84     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  85   </Event>
  86 
  87   <Event name="ContinuationFreeze" category="Java Application" label="Continuation Yield" description="Invocation of Continuation.yield()"
  88     thread="true" stackTrace="true">
  89     <Field type="Class" name="contClass" label="Continuation class" description="Class of the continuation" />
  90     <Field type="ushort" name="numFrames" label="Number of frames" />
  91     <Field type="ushort" name="numIFrames" label="Number of interpreted frames" />
  92     <Field type="ushort" name="numRefs" label="Number of references" />
  93     <Field type="ushort" name="size" label="Stack size in bytes" />
  94   </Event>
  95 
  96   <Event name="ContinuationThaw" category="Java Application" label="Continuation Continue" description="Invocation of Continuation.run() on a started continuation"
  97     thread="true" stackTrace="true">
  98     <Field type="Class" name="contClass" label="Continuation class" description="Class of the continuation" />
  99     <Field type="ushort" name="numFrames" label="Number of frames" />
 100     <Field type="ushort" name="numIFrames" label="Number of interpreted frames" />
 101     <Field type="ushort" name="numRefs" label="Number of references" />
 102     <Field type="ushort" name="size" label="Stack size in bytes" />
 103   </Event>
 104 
 105   <Event name="ReservedStackActivation" category="Java Virtual Machine, Runtime" label="Reserved Stack Activation"
 106     description="Activation of Reserved Stack Area caused by stack overflow with ReservedStackAccess annotated method in call stack" thread="true" stackTrace="true"
 107     startTime="false">
 108     <Field type="Method" name="method" label="Java Method" />
 109   </Event>
 110 
 111   <Event name="ClassLoad" category="Java Virtual Machine, Class Loading" label="Class Load" thread="true" stackTrace="true">
 112     <Field type="Class" name="loadedClass" label="Loaded Class" />
 113     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 114     <Field type="ClassLoader" name="initiatingClassLoader" label="Initiating Class Loader" />
 115   </Event>
 116 
 117   <Event name="ClassDefine" category="Java Virtual Machine, Class Loading" label="Class Define" thread="true" stackTrace="true" startTime="false">
 118     <Field type="Class" name="definedClass" label="Defined Class" />
 119     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 120   </Event>
 121 
 122   <Event name="ClassUnload" category="Java Virtual Machine, Class Loading" label="Class Unload" thread="true" startTime="false">
 123     <Field type="Class" name="unloadedClass" label="Unloaded Class" />
 124     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 125   </Event>
 126 
 127   <Event name="IntFlagChanged" category="Java Virtual Machine, Flag" label="Int Flag Changed" startTime="false">
 128     <Field type="string" name="name" label="Name" />
 129     <Field type="int" name="oldValue" label="Old Value" />
 130     <Field type="int" name="newValue" label="New Value" />
 131     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 132   </Event>
 133 
 134   <Event name="UnsignedIntFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Int Flag Changed" startTime="false">
 135     <Field type="string" name="name" label="Name" />
 136     <Field type="uint" name="oldValue" label="Old Value" />
 137     <Field type="uint" name="newValue" label="New Value" />
 138     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 139   </Event>
 140 
 141   <Event name="LongFlagChanged" category="Java Virtual Machine, Flag" label="Long Flag Changed" startTime="false">
 142     <Field type="string" name="name" label="Name" />
 143     <Field type="long" name="oldValue" label="Old Value" />
 144     <Field type="long" name="newValue" label="New Value" />
 145     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 146   </Event>
 147 
 148   <Event name="UnsignedLongFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Long Flag Changed" startTime="false">
 149     <Field type="string" name="name" label="Name" />
 150     <Field type="ulong" name="oldValue" label="Old Value" />
 151     <Field type="ulong" name="newValue" label="New Value" />
 152     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 153   </Event>
 154 
 155   <Event name="DoubleFlagChanged" category="Java Virtual Machine, Flag" label="Double Flag Changed" startTime="false">
 156     <Field type="string" name="name" label="Name" />
 157     <Field type="double" name="oldValue" label="Old Value" />
 158     <Field type="double" name="newValue" label="New Value" />
 159     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 160   </Event>
 161 
 162   <Event name="BooleanFlagChanged" category="Java Virtual Machine, Flag" label="Boolean Flag Changed" startTime="false">
 163     <Field type="string" name="name" label="Name" />
 164     <Field type="boolean" name="oldValue" label="Old Value" />
 165     <Field type="boolean" name="newValue" label="New Value" />
 166     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 167   </Event>
 168 
 169   <Event name="StringFlagChanged" category="Java Virtual Machine, Flag" label="String Flag Changed" startTime="false">
 170     <Field type="string" name="name" label="Name" />
 171     <Field type="string" name="oldValue" label="Old Value" />
 172     <Field type="string" name="newValue" label="New Value" />
 173     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 174   </Event>
 175  
 176   <Type name="VirtualSpace">
 177     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the virtual space" />
 178     <Field type="ulong" contentType="address" name="committedEnd" label="Committed End Address" description="End address of the committed memory for the virtual space" />
 179     <Field type="ulong" contentType="bytes" name="committedSize" label="Committed Size" description="Size of the committed memory for the virtual space" />
 180     <Field type="ulong" contentType="address" name="reservedEnd" label="Reserved End Address" description="End address of the reserved memory for the virtual space" />
 181     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" description="Size of the reserved memory for the virtual space" />
 182   </Type>
 183   
 184   <Type name="ObjectSpace">
 185     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the space" />
 186     <Field type="ulong" contentType="address" name="end" label="End Address" description="End address of the space" />
 187     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 188     <Field type="ulong" contentType="bytes" name="size" label="Size" description="Size of the space" />
 189   </Type>
 190   
 191   <Event name="GCHeapSummary" category="Java Virtual Machine, GC, Heap" label="Heap Summary" startTime="false">
 192     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 193     <Field type="GCWhen" name="when" label="When" />
 194     <Field type="VirtualSpace" struct="true" name="heapSpace" label="Heap Space" />
 195     <Field type="ulong" contentType="bytes" name="heapUsed" label="Heap Used" description="Bytes allocated by objects in the heap" />
 196   </Event>
 197  
 198   <Type name="MetaspaceSizes">
 199     <Field type="ulong" contentType="bytes" name="committed" label="Committed" description="Committed memory for this space" />
 200     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 201     <Field type="ulong" contentType="bytes" name="reserved" label="Reserved" description="Reserved memory for this space" />
 202   </Type>
 203  
 204   <Event name="MetaspaceSummary" category="Java Virtual Machine, GC, Heap" label="Metaspace Summary" startTime="false">
 205     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 206     <Field type="GCWhen" name="when" label="When" />
 207     <Field type="ulong" contentType="bytes" name="gcThreshold" label="GC Threshold" />
 208     <Field type="MetaspaceSizes" struct="true" name="metaspace" label="Total" />
 209     <Field type="MetaspaceSizes" struct="true" name="dataSpace" label="Data" />
 210     <Field type="MetaspaceSizes" struct="true" name="classSpace" label="Class" />
 211   </Event>
 212 
 213   <Event name="MetaspaceGCThreshold" category="Java Virtual Machine, GC, Metaspace" label="Metaspace GC Threshold" startTime="false">
 214     <Field type="ulong" contentType="bytes" name="oldValue" label="Old Value" />
 215     <Field type="ulong" contentType="bytes" name="newValue" label="New Value" />
 216     <Field type="GCThresholdUpdater" name="updater" label="Updater" />
 217   </Event>
 218 
 219   <Event name="MetaspaceAllocationFailure" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Allocation Failure" startTime="false"
 220     stackTrace="true">
 221     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 222     <Field type="boolean" name="unsafeAnonymousClassLoader" label="Unsafe Anonymous Class Loader" />
 223     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 224     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 225     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 226   </Event>
 227 
 228   <Event name="MetaspaceOOM" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Out of Memory" startTime="false" stackTrace="true">
 229     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 230     <Field type="boolean" name="unsafeAnonymousClassLoader" label="Unsafe Anonymous Class Loader" />
 231     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 232     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 233     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 234   </Event>
 235 
 236   <Event name="MetaspaceChunkFreeListSummary" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Chunk Free List Summary" startTime="false">
 237     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 238     <Field type="GCWhen" name="when" label="When" />
 239     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 240     <Field type="ulong" name="specializedChunks" label="Specialized Chunks" />
 241     <Field type="ulong" contentType="bytes" name="specializedChunksTotalSize" label="Specialized Chunks Total Size" />
 242     <Field type="ulong" name="smallChunks" label="Small Chunks" />
 243     <Field type="ulong" contentType="bytes" name="smallChunksTotalSize" label="Small Chunks Total Size" />
 244     <Field type="ulong" name="mediumChunks" label="Medium Chunks" />
 245     <Field type="ulong" contentType="bytes" name="mediumChunksTotalSize" label="Medium Chunks Total Size" />
 246     <Field type="ulong" name="humongousChunks" label="Humongous Chunks" />
 247     <Field type="ulong" contentType="bytes" name="humongousChunksTotalSize" label="Humongous Chunks Total Size" />
 248   </Event>
 249 
 250   <Event name="PSHeapSummary" category="Java Virtual Machine, GC, Heap" label="Parallel Scavenge Heap Summary" startTime="false">
 251     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 252     <Field type="GCWhen" name="when" label="When" />
 253     <Field type="VirtualSpace" struct="true" name="oldSpace" label="Old Space" />
 254     <Field type="ObjectSpace" struct="true" name="oldObjectSpace" label="Old Object Space" />
 255     <Field type="VirtualSpace" struct="true" name="youngSpace" label="Young Space" />
 256     <Field type="ObjectSpace" struct="true" name="edenSpace" label="Eden Space" />
 257     <Field type="ObjectSpace" struct="true" name="fromSpace" label="From Space" />
 258     <Field type="ObjectSpace" struct="true" name="toSpace" label="To Space" />
 259   </Event>
 260 
 261   <Event name="G1HeapSummary" category="Java Virtual Machine, GC, Heap" label="G1 Heap Summary" startTime="false">
 262     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 263     <Field type="GCWhen" name="when" label="When" />
 264     <Field type="ulong" contentType="bytes" name="edenUsedSize" label="Eden Used Size" />
 265     <Field type="ulong" contentType="bytes" name="edenTotalSize" label="Eden Total Size" />
 266     <Field type="ulong" contentType="bytes" name="survivorUsedSize" label="Survivor Used Size" />
 267     <Field type="uint" name="numberOfRegions" label="Number of Regions" />
 268   </Event>
 269 
 270   <Event name="GarbageCollection" category="Java Virtual Machine, GC, Collector" label="Garbage Collection" description="Garbage collection performed by the JVM">
 271     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 272     <Field type="GCName" name="name" label="Name" description="The name of the Garbage Collector" />
 273     <Field type="GCCause" name="cause" label="Cause" description="The reason for triggering this Garbage Collection" />
 274     <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" />
 275     <Field type="Tickspan" name="longestPause" label="Longest Pause" description="Longest individual pause during the garbage collection" />
 276   </Event>
 277 
 278   <Event name="ParallelOldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Parallel Old Garbage Collection"
 279     description="Extra information specific to Parallel Old Garbage Collections">
 280     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 281     <Field type="ulong" contentType="address" name="densePrefix" label="Dense Prefix" description="The address of the dense prefix, used when compacting" />
 282   </Event>
 283 
 284   <Event name="YoungGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Young Garbage Collection" description="Extra information specific to Young Garbage Collections">
 285     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 286     <Field type="uint" name="tenuringThreshold" label="Tenuring Threshold" />
 287   </Event>
 288 
 289   <Event name="OldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Old Garbage Collection" description="Extra information specific to Old Garbage Collections">
 290     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 291   </Event>
 292 
 293   <Event name="G1GarbageCollection" category="Java Virtual Machine, GC, Collector" label="G1 Garbage Collection" description="Extra information specific to G1 Garbage Collections">
 294     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 295     <Field type="G1YCType" name="type" label="Type" />
 296   </Event>
 297 
 298   <Event name="G1MMU" category="Java Virtual Machine, GC, Detailed" label="G1 MMU Information" startTime="false">
 299     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 300     <Field type="long" contentType="millis" name="timeSlice" label="Time Slice" description="Time slice used to calculate MMU" />
 301     <Field type="long" contentType="millis" name="gcTime" label="GC Time" description="Time stopped because of GC during last time slice" />
 302     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Max time allowed to be spent on GC during last time slice" />
 303   </Event>
 304 
 305   <Event name="EvacuationInformation" category="Java Virtual Machine, GC, Detailed" label="Evacuation Information" startTime="false">
 306     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 307     <Field type="uint" name="cSetRegions" label="Collection Set Regions" />
 308     <Field type="ulong" contentType="bytes" name="cSetUsedBefore" label="Collection Set Before" description="Memory usage before GC in the collection set regions" />
 309     <Field type="ulong" contentType="bytes" name="cSetUsedAfter" label="Collection Set After" description="Memory usage after GC in the collection set regions" />
 310     <Field type="uint" name="allocationRegions" label="Allocation Regions" description="Regions chosen as allocation regions during evacuation (includes survivors and old space regions)" />
 311     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedBefore" label="Allocation Regions Before" description="Memory usage before GC in allocation regions" />
 312     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedAfter" label="Allocation Regions After" description="Memory usage after GC in allocation regions" />
 313     <Field type="ulong" contentType="bytes" name="bytesCopied" label="Bytes Copied" />
 314     <Field type="uint" name="regionsFreed" label="Regions Freed" />
 315   </Event>
 316 
 317   <Event name="GCReferenceStatistics" category="Java Virtual Machine, GC, Reference" label="GC Reference Statistics" startTime="false"
 318     description="Total count of processed references during GC">
 319     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 320     <Field type="ReferenceType" name="type" label="Type" />
 321     <Field type="ulong" name="count" label="Total Count" />
 322   </Event>
 323 
 324   <Type name="CopyFailed">
 325     <Field type="ulong" name="objectCount" label="Object Count" />
 326     <Field type="ulong" contentType="bytes" name="firstSize" label="First Failed Object Size" />
 327     <Field type="ulong" contentType="bytes" name="smallestSize" label="Smallest Failed Object Size" />
 328     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Object Size" />
 329   </Type>
 330 
 331   <Event name="ObjectCountAfterGC" category="Java Virtual Machine, GC, Detailed" startTime="false" label="Object Count after GC">
 332     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 333     <Field type="Class" name="objectClass" label="Object Class" />
 334     <Field type="long" name="count" label="Count" />
 335     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 336   </Event>
 337 
 338   <Type name="G1EvacuationStatistics">
 339     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 340     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Total memory allocated by PLABs" />
 341     <Field type="ulong" contentType="bytes" name="wasted" label="Wasted" description="Total memory wasted within PLABs due to alignment or refill" />
 342     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Total memory occupied by objects within PLABs" />
 343     <Field type="ulong" contentType="bytes" name="undoWaste" label="Undo Wasted" description="Total memory wasted due to allocation undo within PLABs" />
 344     <Field type="ulong" contentType="bytes" name="regionEndWaste" label="Region End Wasted" description="Total memory wasted at the end of regions due to refill" />
 345     <Field type="uint" contentType="bytes" name="regionsRefilled" label="Region Refills" description="Total memory wasted at the end of regions due to refill" />
 346     <Field type="ulong" contentType="bytes" name="directAllocated" label="Allocated (direct)" description="Total memory allocated using direct allocation outside of PLABs" />
 347     <Field type="ulong" contentType="bytes" name="failureUsed" label="Used (failure)" description="Total memory occupied by objects in regions where evacuation failed" />
 348     <Field type="ulong" contentType="bytes" name="failureWaste" label="Wasted (failure)" description="Total memory left unused in regions where evacuation failed" />
 349   </Type>
 350 
 351   <Event name="G1EvacuationYoungStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Statistics for Young" startTime="false"
 352     description="Memory related evacuation statistics during GC for the young generation">
 353     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 354   </Event>
 355 
 356   <Event name="G1EvacuationOldStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Memory Statistics for Old" startTime="false"
 357     description="Memory related evacuation statistics during GC for the old generation">
 358     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 359   </Event>
 360 
 361   <Event name="G1BasicIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Basic IHOP Statistics" startTime="false"
 362     description="Basic statistics related to current IHOP calculation">
 363     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 364     <Field type="ulong" contentType="bytes" name="threshold" label="Current IHOP Threshold" description="Current IHOP threshold" />
 365     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Current IHOP Threshold" description="Current IHOP threshold in percent of old generation" />
 366     <Field type="ulong" contentType="bytes" name="targetOccupancy" label="Target Occupancy" description="Target old generation occupancy to reach at the start of mixed GC" />
 367     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 368     <Field type="ulong" contentType="bytes" name="recentMutatorAllocationSize" label="Recent Mutator Allocation Size"
 369       description="Mutator allocation during mutator operation in the most recent interval" />
 370     <Field type="long" contentType="millis" name="recentMutatorDuration" label="Recent Mutator Duration" description="Time the mutator ran in the most recent interval" />
 371     <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" />
 372     <Field type="long" contentType="millis" name="lastMarkingDuration" label="Last Marking Duration" description="Last time from the end of the last initial mark to the first mixed GC" />
 373   </Event>
 374 
 375   <Event name="G1AdaptiveIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Adaptive IHOP Statistics" startTime="false"
 376     description="Statistics related to current adaptive IHOP calculation">
 377     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 378     <Field type="ulong" contentType="bytes" name="threshold" label="Threshold" description="Current IHOP Threshold" />
 379     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Threshold" description="Current IHOP threshold in percent of the internal target occupancy" />
 380     <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" />
 381     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 382     <Field type="ulong" contentType="bytes" name="additionalBufferSize" label="Additional Buffer" description="Additional buffer size" experimental="true" />
 383     <Field type="double" contentType="bytes-per-second" name="predictedAllocationRate" label="Predicted Allocation Rate" description="Current predicted allocation rate for the mutator in bytes/second" />
 384     <Field type="long" contentType="millis" name="predictedMarkingDuration" label="Predicted Marking Duration"
 385       description="Current predicted time from the end of the last initial mark to the first mixed GC" />
 386     <Field type="boolean" name="predictionActive" label="Prediction Active" description="Indicates whether the adaptive IHOP prediction is active" />
 387   </Event>
 388 
 389   <Event name="PromoteObjectInNewPLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion in new PLAB"
 390     description="Object survived scavenge and was copied to a new Promotion Local Allocation Buffer (PLAB). Supported GCs are Parallel Scavange, 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."
 391     thread="true" stackTrace="false" startTime="false">
 392     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 393     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 394     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 395     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 396       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 scavange the object survives. Newly allocated objects have tenuring age 0." />
 397     <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" />
 398     <Field type="ulong" contentType="bytes" name="plabSize" label="PLAB Size" description="Size of the allocated PLAB to which the object was copied" />
 399   </Event>
 400 
 401   <Event name="PromoteObjectOutsidePLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion outside PLAB"
 402     description="Object survived scavenge and was copied directly to the heap. Supported GCs are Parallel Scavange, 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."
 403     thread="true" stackTrace="false" startTime="false">
 404     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 405     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 406     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 407     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 408       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 scavange the object survives. Newly allocated objects have tenuring age 0." />
 409     <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" />
 410   </Event>
 411 
 412   <Event name="PromotionFailed" category="Java Virtual Machine, GC, Detailed" label="Promotion Failed" startTime="false" description="Promotion of an object failed">
 413     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 414     <Field type="CopyFailed" struct="true" name="promotionFailed" label="Promotion Failed Data" />
 415     <Field type="Thread" name="thread" label="Running thread" />
 416   </Event>
 417 
 418   <Event name="EvacuationFailed" category="Java Virtual Machine, GC, Detailed" label="Evacuation Failed" startTime="false" description="Evacuation of an object failed">
 419     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 420     <Field type="CopyFailed" struct="true" name="evacuationFailed" label="Evacuation Failed Data" />
 421   </Event>
 422 
 423   <Event name="ConcurrentModeFailure" category="Java Virtual Machine, GC, Detailed" label="Concurrent Mode Failure" startTime="false" description="Concurrent Mode failed">
 424     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 425   </Event>
 426 
 427   <Event name="GCPhasePause" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause" thread="true">
 428     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 429     <Field type="string" name="name" label="Name" />
 430   </Event>
 431 
 432   <Event name="GCPhasePauseLevel1" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 1" thread="true">
 433     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 434     <Field type="string" name="name" label="Name" />
 435   </Event>
 436 
 437   <Event name="GCPhasePauseLevel2" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 2" thread="true">
 438     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 439     <Field type="string" name="name" label="Name" />
 440   </Event>
 441 
 442   <Event name="GCPhasePauseLevel3" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 3" thread="true">
 443     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 444     <Field type="string" name="name" label="Name" />
 445   </Event>
 446 
 447   <Event name="GCPhasePauseLevel4" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 4" thread="true">
 448     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 449     <Field type="string" name="name" label="Name" />
 450   </Event>
 451 
 452   <Event name="GCPhaseConcurrent" category="Java Virtual Machine, GC, Phases" label="GC Phase Concurrent" thread="true">
 453     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 454     <Field type="string" name="name" label="Name" />
 455   </Event>
 456 
 457   <Event name="GCPhaseParallel" category="Java Virtual Machine, GC, Phases" label="GC Phase Parallel"
 458          startTime="true" thread="true" description="GC phases for parallel workers">
 459     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
 460     <Field type="uint" name="gcWorkerId" label="GC Worker Identifier" />
 461     <Field type="string" name="name" label="Name" />
 462   </Event>
 463   
 464   <Event name="AllocationRequiringGC" category="Java Virtual Machine, GC, Detailed" label="Allocation Requiring GC" thread="true" stackTrace="true"
 465     startTime="false">
 466     <Field type="uint" name="gcId" label="Pending GC Identifier" relation="GcId" />
 467     <Field type="ulong" contentType="bytes" name="size" label="Allocation Size" />
 468   </Event>
 469 
 470   <Event name="TenuringDistribution" category="Java Virtual Machine, GC, Detailed" label="Tenuring Distribution" startTime="false">
 471     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 472     <Field type="uint" name="age" label="Age" />
 473     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 474   </Event>
 475 
 476   <Event name="G1HeapRegionTypeChange" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Type Change" description="Information about a G1 heap region type change"
 477     startTime="false">
 478     <Field type="uint" name="index" label="Index" />
 479     <Field type="G1HeapRegionType" name="from" label="From" />
 480     <Field type="G1HeapRegionType" name="to" label="To" />
 481     <Field type="ulong" contentType="address" name="start" label="Start" />
 482     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 483   </Event>
 484 
 485   <Event name="Compilation" category="Java Virtual Machine, Compiler" label="Compilation" thread="true">
 486     <Field type="Method" name="method" label="Java Method" />
 487     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 488     <Field type="ushort" name="compileLevel" label="Compilation Level" />
 489     <Field type="boolean" name="succeded" label="Succeeded" />
 490     <Field type="boolean" name="isOsr" label="On Stack Replacement" />
 491     <Field type="ulong" contentType="bytes" name="codeSize" label="Compiled Code Size" />
 492     <Field type="ulong" contentType="bytes" name="inlinedBytes" label="Inlined Code Size" />
 493   </Event>
 494 
 495   <Event name="CompilerPhase" category="Java Virtual Machine, Compiler" label="Compiler Phase" thread="true" >
 496     <Field type="CompilerPhaseType" name="phase" label="Compile Phase" />
 497     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 498     <Field type="ushort" name="phaseLevel" label="Phase Level" />
 499   </Event>
 500 
 501   <Event name="CompilationFailure" category="Java Virtual Machine, Compiler" label="Compilation Failure" thread="true"  startTime="false">
 502     <Field type="string" name="failureMessage" label="Failure Message" />
 503     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 504   </Event>
 505   
 506   <Type name="CalleeMethod">
 507     <Field type="string" name="type" label="Class" />
 508     <Field type="string" name="name" label="Method Name" />
 509     <Field type="string" name="descriptor" label="Method Descriptor" />
 510   </Type>
 511 
 512   <Event name="CompilerInlining" category="Java Virtual Machine, Compiler, Optimization" label="Method Inlining" thread="true" startTime="false">
 513     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 514     <Field type="Method" name="caller" label="Caller Method" />
 515     <Field type="CalleeMethod" name="callee" struct="true" label="Callee Method" />
 516     <Field type="boolean" name="succeeded" label="Succeeded" />
 517     <Field type="string" name="message" label="Message" />
 518     <Field type="int" name="bci" label="Byte Code Index" />
 519   </Event>
 520 
 521   <Event name="SweepCodeCache" category="Java Virtual Machine, Code Sweeper" label="Sweep Code Cache" thread="true" >
 522     <Field type="int" name="sweepId" label="Sweep Identifier" relation="SweepId" />
 523     <Field type="uint" name="sweptCount" label="Methods Swept" />
 524     <Field type="uint" name="flushedCount" label="Methods Flushed" />
 525     <Field type="uint" name="zombifiedCount" label="Methods Zombified" />
 526   </Event>
 527 
 528   <Event name="CodeCacheFull" category="Java Virtual Machine, Code Cache" label="Code Cache Full" thread="true" startTime="false">
 529     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 530     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 531     <Field type="ulong" contentType="address" name="commitedTopAddress" label="Commited Top" />
 532     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 533     <Field type="int" name="entryCount" label="Entries" />
 534     <Field type="int" name="methodCount" label="Methods" />
 535     <Field type="int" name="adaptorCount" label="Adaptors" />
 536     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 537     <Field type="int" name="fullCount" label="Full Count" />
 538   </Event>
 539 
 540   <Event name="SafepointBegin" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Begin" description="Safepointing begin" thread="true">
 541     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 542     <Field type="int" name="totalThreadCount" label="Total Threads" description="The total number of threads at the start of safe point" />
 543     <Field type="int" name="jniCriticalThreadCount" label="JNI Critical Threads" description="The number of threads in JNI critical sections" />
 544   </Event>
 545 
 546   <Event name="SafepointStateSynchronization" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint State Synchronization" description="Synchronize run state of threads"
 547     thread="true">
 548     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 549     <Field type="int" name="initialThreadCount" label="Initial Threads" description="The number of threads running at the beginning of state check" />
 550     <Field type="int" name="runningThreadCount" label="Running Threads" description="The number of threads still running" />
 551     <Field type="int" name="iterations" label="Iterations" description="Number of state check iterations" />
 552   </Event>
 553 
 554   <Event name="SafepointCleanup" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup" description="Safepointing begin running cleanup tasks"
 555     thread="true">
 556     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 557   </Event>
 558 
 559   <Event name="SafepointCleanupTask" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup Task" description="Safepointing begin running cleanup tasks"
 560     thread="true">
 561     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 562     <Field type="string" name="name" label="Task Name" description="The task name" />
 563   </Event>
 564 
 565   <Event name="SafepointEnd" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint End" description="Safepointing end" thread="true">
 566     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 567   </Event>
 568 
 569   <Event name="ExecuteVMOperation" category="Java Virtual Machine, Runtime" label="VM Operation" description="Execution of a VM Operation" thread="true">
 570     <Field type="VMOperationType" name="operation" label="Operation" />
 571     <Field type="boolean" name="safepoint" label="At Safepoint" description="If the operation occured at a safepoint" />
 572     <Field type="boolean" name="blocking" label="Caller Blocked" description="If the calling thread was blocked until the operation was complete" />
 573     <Field type="Thread" name="caller" label="Caller" transition="from"
 574       description="Thread requesting operation. If non-blocking, will be set to 0 indicating thread is unknown" />
 575     <Field type="ulong" name="safepointId" label="Safepoint Identifier" description="The safepoint (if any) under which this operation was completed"
 576       relation="SafepointId" />
 577   </Event>
 578 
 579   <Event name="Shutdown" category="Java Virtual Machine, Runtime" label="JVM Shutdown" description="JVM shutting down" thread="true" stackTrace="true"
 580     startTime="false">
 581     <Field type="string" name="reason" label="Reason" description="Reason for JVM shutdown" />
 582   </Event>
 583 
 584   <Event name="ObjectAllocationInNewTLAB" category="Java Application" label="Allocation in new TLAB" description="Allocation in new Thread Local Allocation Buffer"
 585     thread="true" stackTrace="true" startTime="false">
 586     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 587     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 588     <Field type="ulong" contentType="bytes" name="tlabSize" label="TLAB Size" />
 589   </Event>
 590 
 591   <Event name="ObjectAllocationOutsideTLAB" category="Java Application" label="Allocation outside TLAB" description="Allocation outside Thread Local Allocation Buffers"
 592     thread="true" stackTrace="true" startTime="false">
 593     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 594     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 595   </Event>
 596 
 597   <Event name="OldObjectSample" category="Java Virtual Machine, Profiling" label="Old Object Sample" description="A potential memory leak" stackTrace="true" thread="true"
 598     startTime="false" cutoff="true">
 599     <Field type="Ticks" name="allocationTime" label="Allocation Time" />
 600     <Field type="ulong" contentType="bytes" name="lastKnownHeapUsage" label="Last Known Heap Usage" />
 601     <Field type="OldObject" name="object" label="Object" />
 602     <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" />
 603     <Field type="OldObjectGcRoot" name="root" label="GC Root" />
 604   </Event>
 605 
 606   <Event name="DumpReason" category="Flight Recorder" label="Recording Reason" 
 607          description="Who requested the recording and why" 
 608          startTime="false">
 609     <Field type="string" name="reason" label="Reason" description="Reason for writing recording data to disk" />
 610     <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" />
 611   </Event>
 612 
 613   <Event name="DataLoss" category="Flight Recorder" label="Data Loss" 
 614          description="Data could not be copied out from a buffer, typically because of contention"
 615          startTime="false">
 616     <Field type="ulong" contentType="bytes" name="amount" label="Amount" description="Amount lost data" />
 617     <Field type="ulong" contentType="bytes" name="total" label="Total" description="Total lost amount for thread" />
 618   </Event>
 619 
 620   <Event name="JVMInformation" category="Java Virtual Machine" label="JVM Information" 
 621          description="Description of JVM and the Java application"
 622          period="endChunk">
 623     <Field type="string" name="jvmName" label="JVM Name" />
 624     <Field type="string" name="jvmVersion" label="JVM Version" />
 625     <Field type="string" name="jvmArguments" label="JVM Command Line Arguments" />
 626     <Field type="string" name="jvmFlags" label="JVM Settings File Arguments" />
 627     <Field type="string" name="javaArguments" label="Java Application Arguments" />
 628     <Field type="long" contentType="epochmillis" name="jvmStartTime" label="JVM Start Time" />
 629     <Field type="long" name="pid" label="Process Identifier" />
 630      </Event>
 631 
 632   <Event name="OSInformation" category="Operating System" label="OS Information" period="endChunk">
 633     <Field type="string" name="osVersion" label="OS Version" />
 634   </Event>
 635 
 636   <Event name="VirtualizationInformation" category="Operating System" label="Virtualization Information" period="endChunk">
 637     <Field type="string" name="name" label="Name" />
 638   </Event>
 639 
 640   <Event name="InitialSystemProperty" category="Java Virtual Machine" label="Initial System Property" description="System Property at JVM start" period="endChunk">
 641     <Field type="string" name="key" label="Key" />
 642     <Field type="string" name="value" label="Value" />
 643   </Event>
 644 
 645   <Event name="InitialEnvironmentVariable" category="Operating System" label="Initial Environment Variable" period="endChunk">
 646     <Field type="string" name="key" label="Key" />
 647     <Field type="string" name="value" label="Value" />
 648   </Event>
 649 
 650   <Event name="SystemProcess" category="Operating System" label="System Process" period="endChunk">
 651     <Field type="string" name="pid" label="Process Identifier" />
 652     <Field type="string" name="commandLine" label="Command Line" />
 653   </Event>
 654 
 655   <Event name="CPUInformation" category="Operating System, Processor" label="CPU Information" period="endChunk">
 656     <Field type="string" name="cpu" label="Type" />
 657     <Field type="string" name="description" label="Description" />
 658     <Field type="uint" name="sockets" label="Sockets" />
 659     <Field type="uint" name="cores" label="Cores" />
 660     <Field type="uint" name="hwThreads" label="Hardware Threads" />
 661   </Event>
 662 
 663   <Event name="CPUTimeStampCounter" category="Operating System, Processor" label="CPU Time Stamp Counter" period="endChunk">
 664     <Field type="boolean" name="fastTimeEnabled" label="Fast Time" />
 665     <Field type="boolean" name="fastTimeAutoEnabled" label="Trusted Platform" />
 666     <Field type="long" contentType="hertz" name="osFrequency" label="OS Frequency" />
 667     <Field type="long" contentType="hertz" name="fastTimeFrequency" label="Fast Time Frequency" />
 668   </Event>
 669 
 670   <Event name="CPULoad" category="Operating System, Processor" label="CPU Load" description="OS CPU Load" period="everyChunk">
 671     <Field type="float" contentType="percentage" name="jvmUser" label="JVM User" />
 672     <Field type="float" contentType="percentage" name="jvmSystem" label="JVM System" />
 673     <Field type="float" contentType="percentage" name="machineTotal" label="Machine Total" />
 674   </Event>
 675 
 676   <Event name="ThreadCPULoad" category="Operating System, Processor" label="Thread CPU Load" period="everyChunk" thread="true">
 677     <Field type="float" contentType="percentage" name="user" label="User Mode CPU Load" description="User mode thread CPU load" />
 678     <Field type="float" contentType="percentage" name="system" label="System Mode CPU Load" description="System mode thread CPU load" />
 679   </Event>
 680 
 681   <Event name="ThreadContextSwitchRate" category="Operating System, Processor" label="Thread Context Switch Rate" period="everyChunk">
 682     <Field type="float" contentType="hertz" name="switchRate" label="Switch Rate" description="Number of context switches per second" />
 683   </Event>
 684 
 685   <Event name="NetworkUtilization" category="Operating System, Network" label="Network Utilization" period="everyChunk">
 686     <Field type="NetworkInterfaceName" name="networkInterface" label="Network Interface" description="Network Interface Name"/>
 687     <Field type="long" contentType="bits-per-second" name="readRate" label="Read Rate" description="Number of incoming bits per second"/>
 688     <Field type="long" contentType="bits-per-second" name="writeRate" label="Write Rate" description="Number of outgoing bits per second"/>
 689   </Event>
 690 
 691   <Event name="JavaThreadStatistics" category="Java Application, Statistics" label="Java Thread Statistics" period="everyChunk">
 692     <Field type="long" name="activeCount" label="Active Threads" description="Number of live active threads including both daemon and non-daemon threads" />
 693     <Field type="long" name="daemonCount" label="Daemon Threads" description="Number of live daemon threads" />
 694     <Field type="long" name="accumulatedCount" label="Accumulated Threads" description="Number of threads created and also started since JVM start" />
 695     <Field type="long" name="peakCount" label="Peak Threads" description="Peak live thread count since JVM start or when peak count was reset" />
 696   </Event>
 697 
 698   <Event name="ClassLoadingStatistics" category="Java Application, Statistics" label="Class Loading Statistics" period="everyChunk">
 699     <Field type="long" name="loadedClassCount" label="Loaded Class Count" description="Number of classes loaded since JVM start" />
 700     <Field type="long" name="unloadedClassCount" label="Unloaded Class Count" description="Number of classes unloaded since JVM start" />
 701   </Event>
 702 
 703   <Event name="ClassLoaderStatistics" category="Java Application, Statistics" label="Class Loader Statistics" period="everyChunk">
 704     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 705     <Field type="ClassLoader" name="parentClassLoader" label="Parent Class Loader" />
 706     <Field type="ulong" contentType="address" name="classLoaderData" label="ClassLoaderData Pointer" description="Pointer to the ClassLoaderData structure in the JVM" />
 707     <Field type="long" name="classCount" label="Classes" description="Number of loaded classes" />
 708     <Field type="ulong" contentType="bytes" name="chunkSize" label="Total Chunk Size" description="Total size of all allocated metaspace chunks (each chunk has several blocks)" />
 709     <Field type="ulong" contentType="bytes" name="blockSize" label="Total Block Size" description="Total size of all allocated metaspace blocks (each chunk has several blocks)" />
 710     <Field type="long" name="unsafeAnonymousClassCount" label="Unsafe Anonymous Classes" description="Number of loaded classes to support invokedynamic" />
 711     <Field type="ulong" contentType="bytes" name="unsafeAnonymousChunkSize" label="Total Unsafe Anonymous Classes Chunk Size"
 712       description="Total size of all allocated metaspace chunks for unsafe anonymous classes (each chunk has several blocks)" />
 713     <Field type="ulong" contentType="bytes" name="unsafeAnonymousBlockSize" label="Total Unsafe Anonymous Classes Block Size"
 714       description="Total size of all allocated metaspace blocks for unsafe anonymous classes (each chunk has several blocks)" />
 715   </Event>
 716 
 717   <Event name="SymbolTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="Symbol Table Statistics" period="everyChunk">
 718     <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
 719     <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
 720     <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
 721     <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
 722     <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
 723     <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
 724     <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
 725     <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
 726     <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
 727   </Event>
 728 
 729   <Event name="StringTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="String Table Statistics" period="everyChunk">
 730     <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
 731     <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
 732     <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
 733     <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
 734     <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
 735     <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
 736     <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
 737     <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
 738     <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
 739   </Event>
 740 
 741   <Event name="PlaceholderTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="Placeholder Table Statistics" period="everyChunk">
 742     <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
 743     <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
 744     <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
 745     <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
 746     <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
 747     <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
 748     <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
 749     <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
 750     <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
 751   </Event>
 752 
 753   <Event name="LoaderConstraintsTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="Loader Constraints Table Statistics" period="everyChunk">
 754     <Field type="ulong" name="bucketCount" label="Bucket Count" />
 755     <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
 756     <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
 757     <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
 758     <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
 759     <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
 760     <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
 761     <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
 762     <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
 763   </Event>
 764 
 765   <Event name="ProtectionDomainCacheTableStatistics" category="Java Virtual Machine, Runtime, Tables" label="Protection Domain Cache Table Statistics" period="everyChunk">
 766     <Field type="ulong" name="bucketCount" label="Bucket Count" description="Number of buckets" />
 767     <Field type="ulong" name="entryCount" label="Entry Count" description="Number of all entries" />
 768     <Field type="ulong" contentType="bytes" name="totalFootprint" label="Total Footprint" description="Total memory footprint (the table itself plus all of the entries)" />
 769     <Field type="ulong" name="bucketCountMaximum" label="Maximum Bucket Count" description="The maximum bucket length (entries in a single bucket)" />
 770     <Field type="float" name="bucketCountAverage" label="Average Bucket Count" description="The average bucket length" />
 771     <Field type="float" name="bucketCountVariance" label="Bucket Count Variance" description="How far bucket lengths are spread out from their average value" />
 772     <Field type="float" name="bucketCountStandardDeviation" label="Bucket Count Standard Deviation" description="How far bucket lengths are spread out from their mean (expected) value" />
 773     <Field type="float" name="insertionRate" label="Insertion Rate" description="How many items were added since last event (per second)" />
 774     <Field type="float" name="removalRate" label="Removal Rate" description="How many items were removed since last event (per second)" />
 775   </Event>
 776 
 777   <Event name="ThreadAllocationStatistics" category="Java Application, Statistics" label="Thread Allocation Statistics" period="everyChunk">
 778     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Approximate number of bytes allocated since thread start" />
 779     <Field type="Thread" name="thread" label="Thread" />
 780   </Event>
 781 
 782   <Event name="PhysicalMemory" category="Operating System, Memory" label="Physical Memory" description="OS Physical Memory" period="everyChunk">
 783     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" description="Total amount of physical memory available to OS" />
 784     <Field type="ulong" contentType="bytes" name="usedSize" label="Used Size" description="Total amount of physical memory in use" />
 785   </Event>
 786 
 787   <Event name="ExecutionSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample" description="Snapshot of a threads state"
 788     period="everyChunk">
 789     <Field type="Thread" name="sampledThread" label="Thread" />
 790     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 791     <Field type="ThreadState" name="state" label="Thread State" />
 792   </Event>
 793 
 794   <Event name="NativeMethodSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample Native" description="Snapshot of a threads state when in native"
 795     period="everyChunk">
 796     <Field type="Thread" name="sampledThread" label="Thread" />
 797     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 798     <Field type="ThreadState" name="state" label="Thread State" />
 799   </Event>
 800 
 801   <Event name="ThreadDump" category="Java Virtual Machine, Runtime" label="Thread Dump" period="everyChunk">
 802     <Field type="string" name="result" label="Thread Dump" />
 803   </Event>
 804 
 805   <Event name="NativeLibrary" category="Java Virtual Machine, Runtime" label="Native Library" period="everyChunk">
 806     <Field type="string" name="name" label="Name" />
 807     <Field type="ulong" contentType="address" name="baseAddress" label="Base Address" description="Starting address of the module" />
 808     <Field type="ulong" contentType="address" name="topAddress" label="Top Address" description="Ending address of the module" />
 809   </Event>
 810 
 811   <Event name="ModuleRequire" category="Java Virtual Machine, Runtime, Modules" label="Module Require" thread="false" period="everyChunk"
 812     description="A directed edge representing a dependency">
 813     <Field type="Module" name="source" label="Source Module" />
 814     <Field type="Module" name="requiredModule" label="Required Module" />
 815   </Event>
 816 
 817   <Event name="ModuleExport" category="Java Virtual Machine, Runtime, Modules" label="Module Export" thread="false" period="everyChunk">
 818     <Field type="Package" name="exportedPackage" label="Exported Package" />
 819     <Field type="Module" name="targetModule" label="Target Module"
 820       description="Module to which the package is qualifiedly exported. If null or N/A, the package is unqualifiedly exported" />
 821   </Event>
 822 
 823   <Event name="CompilerStatistics" category="Java Virtual Machine, Compiler" label="Compiler Statistics" thread="false" period="everyChunk" startTime="false">
 824     <Field type="int" name="compileCount" label="Compiled Methods" />
 825     <Field type="int" name="bailoutCount" label="Bailouts" />
 826     <Field type="int" name="invalidatedCount" label="Invalidated Compilations" />
 827     <Field type="int" name="osrCompileCount" label="OSR Compilations" />
 828     <Field type="int" name="standardCompileCount" label="Standard Compilations" />
 829     <Field type="ulong" contentType="bytes" name="osrBytesCompiled" label="OSR Bytes Compiled" />
 830     <Field type="ulong" contentType="bytes" name="standardBytesCompiled" label="Standard Bytes Compiled" />
 831     <Field type="ulong" contentType="bytes" name="nmetodsSize" label="Compilation Resulting Size" />
 832     <Field type="ulong" contentType="bytes" name="nmetodCodeSize" label="Compilation Resulting Code Size" />
 833     <Field type="long" contentType="millis" name="peakTimeSpent" label="Peak Time" />
 834     <Field type="long" contentType="millis" name="totalTimeSpent" label="Total time" />
 835   </Event>
 836 
 837   <Event name="CompilerConfiguration" category="Java Virtual Machine, Compiler" label="Compiler Configuration" thread="false" period="endChunk" startTime="false">
 838     <Field type="int" name="threadCount" label="Thread Count" />
 839     <Field type="boolean" name="tieredCompilation" label="Tiered Compilation" />
 840   </Event>
 841 
 842   <Event name="CodeCacheStatistics" category="Java Virtual Machine, Code Cache" label="Code Cache Statistics" thread="false" period="everyChunk" startTime="false">
 843     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 844     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 845     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 846     <Field type="int" name="entryCount" label="Entries" />
 847     <Field type="int" name="methodCount" label="Methods" />
 848     <Field type="int" name="adaptorCount" label="Adaptors" />
 849     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 850     <Field type="int" name="fullCount" label="Full Count" />
 851   </Event>
 852 
 853   <Event name="CodeCacheConfiguration" category="Java Virtual Machine, Code Cache" label="Code Cache Configuration" thread="false" period="endChunk" startTime="false">
 854     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Size" />
 855     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" />
 856     <Field type="ulong" contentType="bytes" name="nonNMethodSize" label="Non-nmethod Size" />
 857     <Field type="ulong" contentType="bytes" name="profiledSize" label="Profiled Size" />
 858     <Field type="ulong" contentType="bytes" name="nonProfiledSize" label="Non-profiled Size" />
 859     <Field type="ulong" contentType="bytes" name="expansionSize" label="Expansion size" />
 860     <Field type="ulong" contentType="bytes" name="minBlockLength" label="Minimum Block Length" />
 861     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 862     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 863   </Event>
 864 
 865   <Event name="CodeSweeperStatistics" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Statistics" thread="false" period="everyChunk" startTime="false">
 866     <Field type="int" name="sweepCount" label="Sweeps" />
 867     <Field type="int" name="methodReclaimedCount" label="Methods Reclaimed" />
 868     <Field type="Tickspan" name="totalSweepTime" label="Time Spent Sweeping" />
 869     <Field type="Tickspan" name="peakFractionTime" label="Peak Time Fraction Sweep" />
 870     <Field type="Tickspan" name="peakSweepTime" label="Peak Time Full Sweep" />
 871   </Event>
 872 
 873   <Event name="CodeSweeperConfiguration" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Configuration" thread="false" period="endChunk" startTime="false">
 874     <Field type="boolean" name="sweeperEnabled" label="Code Sweeper Enabled" />
 875     <Field type="boolean" name="flushingEnabled" label="Code Cache Flushing Enabled" />
 876   </Event>
 877 
 878   <Event name="IntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Int Flag">
 879     <Field type="string" name="name" label="Name" />
 880     <Field type="int" name="value" label="Value" />
 881     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 882   </Event>
 883 
 884   <Event name="UnsignedIntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Int Flag">
 885     <Field type="string" name="name" label="Name" />
 886     <Field type="uint" name="value" label="Value" />
 887     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 888   </Event>
 889 
 890   <Event name="LongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Long Flag">
 891     <Field type="string" name="name" label="Name" />
 892     <Field type="long" name="value" label="Value" />
 893     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 894   </Event>
 895 
 896   <Event name="UnsignedLongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Long Flag">
 897     <Field type="string" name="name" label="Name" />
 898     <Field type="ulong" name="value" label="Value" />
 899     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 900   </Event>
 901 
 902   <Event name="DoubleFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Double Flag">
 903     <Field type="string" name="name" label="Name" />
 904     <Field type="double" name="value" label="Value" />
 905     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 906   </Event>
 907 
 908   <Event name="BooleanFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Boolean Flag">
 909     <Field type="string" name="name" label="Name" />
 910     <Field type="boolean" name="value" label="Value" />
 911     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 912   </Event>
 913 
 914   <Event name="StringFlag" category="Java Virtual Machine, Flag" period="endChunk" label="String Flag">
 915     <Field type="string" name="name" label="Name" />
 916     <Field type="string" name="value" label="Value" />
 917     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 918   </Event>
 919 
 920   <Event name="ObjectCount" category="Java Virtual Machine, GC, Detailed" startTime="false" period="everyChunk" label="Object Count">
 921     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 922     <Field type="Class" name="objectClass" label="Object Class" />
 923     <Field type="long" name="count" label="Count" />
 924     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 925   </Event>
 926 
 927   <Event name="G1HeapRegionInformation" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Information" description="Information about a specific heap region in the G1 GC"
 928     period="everyChunk">
 929     <Field type="uint" name="index" label="Index" />
 930     <Field type="G1HeapRegionType" name="type" label="Type" />
 931     <Field type="ulong" contentType="address" name="start" label="Start" />
 932     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 933   </Event>
 934 
 935   <Event name="GCConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Configuration" description="The configuration of the garbage collector"
 936     period="endChunk">
 937     <Field type="GCName" name="youngCollector" label="Young Garbage Collector" description="The garbage collector used for the young generation" />
 938     <Field type="GCName" name="oldCollector" label="Old Garbage Collector" description="The garbage collector used for the old generation" />
 939     <Field type="uint" name="parallelGCThreads" label="Parallel GC Threads" description="Number of parallel threads to use for garbage collection" />
 940     <Field type="uint" name="concurrentGCThreads" label="Concurrent GC Threads" description="Number of concurrent threads to use for garbage collection" />
 941     <Field type="boolean" name="usesDynamicGCThreads" label="Uses Dynamic GC Threads" description="Whether a dynamic number of GC threads are used or not" />
 942     <Field type="boolean" name="isExplicitGCConcurrent" label="Concurrent Explicit GC" description="Whether System.gc() is concurrent or not" />
 943     <Field type="boolean" name="isExplicitGCDisabled" label="Disabled Explicit GC" description="Whether System.gc() will cause a garbage collection or not" />
 944     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Target for GC pauses" />
 945     <Field type="uint" name="gcTimeRatio" label="GC Time Ratio" description="Target for runtime vs garbage collection time" />
 946   </Event>
 947 
 948   <Event name="GCSurvivorConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Survivor Configuration"
 949     description="The configuration of the survivors of garbage collection" period="endChunk">
 950     <Field type="ubyte" name="maxTenuringThreshold" label="Maximum Tenuring Threshold" description="Upper limit for the age of how old objects to keep in the survivor area" />
 951     <Field type="ubyte" name="initialTenuringThreshold" label="Initial Tenuring Threshold" description="Initial age limit for how old objects to keep in survivor area" />
 952   </Event>
 953 
 954   <Event name="GCTLABConfiguration" category="Java Virtual Machine, GC, Configuration" label="TLAB Configuration"
 955     description="The configuration of the Thread Local Allocation Buffers (TLABs)" period="endChunk">
 956     <Field type="boolean" name="usesTLABs" label="TLABs Used" description="If Thread Local Allocation Buffers (TLABs) are in use" />
 957     <Field type="ulong" contentType="bytes" name="minTLABSize" label="Minimum TLAB Size" />
 958     <Field type="ulong" contentType="bytes" name="tlabRefillWasteLimit" label="TLAB Refill Waste Limit" />
 959   </Event>
 960 
 961   <Event name="GCHeapConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Heap Configuration" description="The configuration of the garbage collected heap"
 962     period="endChunk">
 963     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Heap Size" />
 964     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Heap Size" />
 965     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Heap Size" />
 966     <Field type="boolean" name="usesCompressedOops" label="If Compressed Oops Are Used" description="If compressed Oops (Ordinary Object Pointers) are enabled" />
 967     <Field type="NarrowOopMode" name="compressedOopsMode" label="Compressed Oops Mode" description="The kind of compressed oops being used" />
 968     <Field type="ulong" contentType="bytes" name="objectAlignment" label="Object Alignment" description="Object alignment (in bytes) on the heap" />
 969     <Field type="ubyte" name="heapAddressBits" label="Heap Address Size" description="Heap Address Size (in bits)" />
 970   </Event>
 971 
 972   <Event name="YoungGenerationConfiguration" category="Java Virtual Machine, GC, Configuration" label="Young Generation Configuration"
 973     description="The configuration of the young generation of the garbage collected heap" period="endChunk">
 974     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Young Generation Size" />
 975     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Young Generation Size" />
 976     <Field type="uint" name="newRatio" label="New Ratio" description="The size of the young generation relative to the tenured generation" />
 977   </Event>
 978 
 979   <Event name="ZPageAllocation" category="Java Virtual Machine, GC, Detailed" label="ZPage Allocation" description="Allocation of a ZPage" thread="true" stackTrace="false" experimental="true">
 980      <Field type="ulong" contentType="bytes" name="pageSize" label="Page Size" />
 981      <Field type="ulong" contentType="bytes" name="usedAfter" label="Used After" />
 982      <Field type="ulong" contentType="bytes" name="freeAfter" label="Free After" />
 983      <Field type="ulong" contentType="bytes" name="inCacheAfter" label="In Cache After" />
 984      <Field type="boolean" name="nonBlocking" label="Non-blocking" />
 985      <Field type="boolean" name="noReserve" label="No Reserve" />
 986   </Event>
 987 
 988   <Event name="ZThreadPhase" category="Java Virtual Machine, GC, Detailed" label="ZGC Thread Phase" thread="true" experimental="true">
 989     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
 990     <Field type="string" name="name" label="Name" />
 991   </Event>
 992 
 993   <Event name="ZStatisticsCounter" category="Java Virtual Machine, GC, Detailed" label="Z Statistics Counter" thread="true" experimental="true" >
 994     <Field type="ZStatisticsCounterType" name="id" label="Id" />
 995     <Field type="ulong" name="increment" label="Increment" />
 996     <Field type="ulong" name="value" label="Value" />
 997   </Event>
 998 
 999   <Event name="ZStatisticsSampler" category="Java Virtual Machine, GC, Detailed" label="Z Statistics Sampler" thread="true" experimental="true">
1000     <Field type="ZStatisticsSamplerType" name="id" label="Id" />
1001     <Field type="ulong" name="value" label="Value" />
1002   </Event>
1003 
1004   <Event name="ShenandoahHeapRegionStateChange" category="Java Virtual Machine, GC, Detailed" label="Shenandoah Heap Region State Change" description="Information about a Shenandoah heap region state change"
1005     startTime="false">
1006     <Field type="uint" name="index" label="Index" />
1007     <Field type="ShenandoahHeapRegionState" name="from" label="From" />
1008     <Field type="ShenandoahHeapRegionState" name="to" label="To" />
1009     <Field type="ulong" contentType="address" name="start" label="Start" />
1010     <Field type="ulong" contentType="bytes" name="used" label="Used" />
1011   </Event>
1012 
1013   <Event name="ShenandoahHeapRegionInformation" category="Java Virtual Machine, GC, Detailed" label="Shenandoah Heap Region Information" description="Information about a specific heap region in the Shenandoah GC"
1014     period="everyChunk">
1015     <Field type="uint" name="index" label="Index" />
1016     <Field type="ShenandoahHeapRegionState" name="state" label="State" />
1017     <Field type="ulong" contentType="address" name="start" label="Start" />
1018     <Field type="ulong" contentType="bytes" name="used" label="Used" />
1019   </Event>
1020 
1021   <Type name="ShenandoahHeapRegionState" label="Shenandoah Heap Region State">
1022     <Field type="string" name="state" label="State" />
1023   </Type>
1024 
1025   <Type name="ZStatisticsCounterType" label="Z Statistics Counter">
1026     <Field type="string" name="counter" label="Counter" />
1027   </Type>
1028 
1029   <Type name="ZStatisticsSamplerType" label="Z Statistics Sampler">
1030     <Field type="string" name="sampler" label="Sampler" />
1031   </Type>
1032 
1033   <Type name="NetworkInterfaceName" label="Network Interface">
1034     <Field type="string" name="networkInterface" label="Network Interface" description="Network Interface Name" />
1035   </Type>
1036 
1037   <Type name="Thread" label="Thread">
1038     <Field type="string" name="osName" label="OS Thread Name" />
1039     <Field type="long" name="osThreadId" label="OS Thread Id" />
1040     <Field type="string" name="javaName" label="Java Thread Name" />
1041     <Field type="long" name="javaThreadId" label="Java Thread Id" />
1042     <Field type="ThreadGroup" name="group" label="Java Thread Group" />
1043   </Type>
1044 
1045   <Type name="ThreadGroup" label="Thread Group">
1046     <Field type="ThreadGroup" name="parent" label="Parent" />
1047     <Field type="string" name="name" label="Name" />
1048   </Type>
1049 
1050   <Type name="Class" label="Java Class">
1051     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
1052     <Field type="Symbol" name="name" label="Name" />
1053     <Field type="Package" name="package" label="Package" />
1054     <Field type="int" name="modifiers" label="Access Modifiers" />
1055   </Type>
1056 
1057   <Type name="ClassLoader" label="Java Class Loader">
1058     <Field type="Class" name="type" label="Type" />
1059     <Field type="Symbol" name="name" label="Name" />
1060   </Type>
1061 
1062   <Type name="Method" label="Java Method">
1063     <Field type="Class" name="type" label="Type" />
1064     <Field type="Symbol" name="name" label="Name" />
1065     <Field type="Symbol" name="descriptor" label="Descriptor" />
1066     <Field type="int" name="modifiers" label="Access Modifiers" />
1067     <Field type="boolean" name="hidden" label="Hidden" />
1068   </Type>
1069 
1070   <Type name="Symbol" label="Symbol">
1071     <Field type="string" name="string" label="String" />
1072   </Type>
1073 
1074   <Type name="ThreadState" label="Java Thread State">
1075     <Field type="string" name="name" label="Name" />
1076   </Type>
1077 
1078   <Type name="GCName" label="GC Name">
1079     <Field type="string" name="name" label="Name" />
1080   </Type>
1081 
1082   <Type name="GCCause" label="GC Cause">
1083     <Field type="string" name="cause" label="Cause" />
1084   </Type>
1085 
1086   <Type name="GCWhen" label="GC When">
1087     <Field type="string" name="when" label="When" />
1088   </Type>
1089 
1090   <Type name="G1HeapRegionType" label="G1 Heap Region Type">
1091     <Field type="string" name="type" label="Type" />
1092   </Type>
1093 
1094   <Type name="G1YCType" label="G1 YC Type">
1095     <Field type="string" name="type" label="Type" />
1096   </Type>
1097 
1098   <Type name="GCThresholdUpdater" label="GC Threshold Updater">
1099     <Field type="string" name="updater" label="Updater" />
1100   </Type>
1101 
1102   <Type name="ReferenceType" label="Reference Type">
1103     <Field type="string" name="type" label="Type" />
1104   </Type>
1105 
1106   <Type name="MetadataType" label="Metadata Type">
1107     <Field type="string" name="type" label="Type" />
1108   </Type>
1109 
1110   <Type name="MetaspaceObjectType" label="Metaspace Object Type">
1111     <Field type="string" name="type" label="Type" />
1112   </Type>
1113 
1114   <Type name="NarrowOopMode" label="Narrow Oop Mode">
1115     <Field type="string" name="mode" label="Mode" />
1116   </Type>
1117 
1118   <Type name="VMOperationType" label="VM Operation Type">
1119     <Field type="string" name="type" label="Type" />
1120   </Type>
1121 
1122   <Type name="CompilerPhaseType" label="Compiler Phase Type">
1123     <Field type="string" name="phase" label="Phase" />
1124   </Type>
1125 
1126   <Type name="FlagValueOrigin" label="Flag Value Origin">
1127     <Field type="string" name="origin" label="Origin" />
1128   </Type>
1129 
1130   <Type name="CodeBlobType" label="Code Blob Type">
1131     <Field type="string" name="type" label="Type" />
1132   </Type>
1133 
1134   <Type name="InflateCause" label="Inflation Cause">
1135     <Field type="string" name="cause" label="Cause" />
1136   </Type>
1137 
1138   <Type name="Module" label="Module">
1139     <Field type="Symbol" name="name" label="Name" />
1140     <Field type="Symbol" name="version" label="Version" />
1141     <Field type="Symbol" name="location" label="Location" />
1142     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
1143   </Type>
1144 
1145   <Type name="Package" label="Package">
1146     <Field type="Symbol" name="name" label="Name" />
1147     <Field type="Module" name="module" label="Module" />
1148     <Field type="boolean" name="exported" label="Exported" />
1149   </Type>
1150 
1151   <Type name="StackTrace" label="Stacktrace">
1152     <Field type="boolean" name="truncated" label="Truncated" />
1153     <Field type="StackFrame" array="true" struct="true" name="frames" label="Stack Frames" />
1154   </Type>
1155 
1156   <Type name="FrameType" label="Frame type">
1157     <Field type="string" name="description" label="Description" />
1158   </Type>
1159 
1160   <Type name="OldObjectRootSystem" label="GC Root System">
1161     <Field type="string" name="system" label="System" />
1162   </Type>
1163 
1164   <Type name="OldObjectRootType" label="GC Root Type">
1165     <Field type="string" name="type" label="Type" />
1166   </Type>
1167 
1168   <Type name="OldObjectGcRoot" label="GC Root">
1169     <Field type="string" name="description" label="Root Description" description="Root information" />
1170     <Field type="OldObjectRootSystem" name="system" label="System" description="The subsystem of origin for the root" />
1171     <Field type="OldObjectRootType" name="type" label="Type" description="The root type" />
1172   </Type>
1173 
1174   <Type name="OldObjectArray" label="Old Object Array">
1175     <Field type="int" name="size" label="Array Size" description="Size of array" />
1176     <Field type="int" name="index" label="Index" description="Index in the array" />
1177   </Type>
1178 
1179   <Type name="OldObjectField" label="Old Object Field">
1180     <Field type="string" name="name" label="Field" description="Name of field" />
1181     <Field type="short" name="modifiers" label="Field Modifiers" description="Field modifiers" />
1182   </Type>
1183 
1184   <Type name="OldObject" label="Old Object">
1185     <Field type="ulong" contentType="address" name="address" label="Memory Address" />
1186     <Field type="Class" name="type" label="Java Class" />
1187     <Field type="string" name="description" label="Object Description" description="Object description" />
1188     <Field type="Reference" name="referrer" label="Referrer Object" description="Object referencing this object" />
1189   </Type>
1190 
1191   <Type name="Reference" label="Reference">
1192     <Field type="OldObjectArray" name="array" label="Array Information" description="Array or null if it is not an array" />
1193     <Field type="OldObjectField" name="field" label="Field Information" description="Field or null if it is an array" />
1194     <Field type="OldObject" name="object" label="Object" description="Object holder for this reference" />
1195     <Field type="int" name="skip" label="Skip Value" description="The object is this many hops away" />
1196   </Type>
1197 
1198   <Type name="StackFrame">
1199     <Field type="Method" name="method" label="Java Method" />
1200     <Field type="int" name="lineNumber" label="Line Number" />
1201     <Field type="int" name="bytecodeIndex" label="Bytecode Index" />
1202     <Field type="FrameType" name="type" label="Frame Type" />
1203   </Type>
1204  
1205   <Relation name="JavaMonitorAddress"/>
1206   <Relation name="SafepointId"/>
1207   <Relation name="GcId"/>
1208   <Relation name="CompileId" />
1209   <Relation name="SweepId"/>
1210  
1211   <XmlType name="Package" parameterType="const PackageEntry*" fieldType="const PackageEntry*"/> 
1212   <XmlType name="Class" javaType="java.lang.Class" parameterType="const Klass*" fieldType="const Klass*"/> 
1213   <XmlType name="Module"  parameterType="const ModuleEntry*" fieldType="const ModuleEntry*"/> 
1214   <XmlType name="ClassLoader" parameterType="const ClassLoaderData*" fieldType="const ClassLoaderData*"/> 
1215   <XmlType name="Method" parameterType="const Method*" fieldType="const Method*"/> 
1216   <XmlType name="Thread" javaType="java.lang.Thread" parameterType="u8" fieldType="u8"/> 
1217   <XmlType name="Tickspan" contentType="tickspan" javaType="long" parameterType="const Tickspan&amp;" fieldType="Tickspan"/> 
1218   <XmlType name="Ticks" contentType="tickstamp" javaType="long" parameterType="const Ticks&amp;" fieldType="Ticks"/> 
1219   <XmlType name="ulong" javaType="long" unsigned="true" parameterType="u8" fieldType="u8"/> 
1220   <XmlType name="uint" javaType="int" unsigned="true" parameterType="unsigned" fieldType="unsigned"/> 
1221   <XmlType name="ushort" javaType="short" unsigned="true" parameterType="u2" fieldType="u2"/> 
1222   <XmlType name="ubyte" javaType="byte" unsigned="true" parameterType="u1" fieldType="u1"/> 
1223   <XmlType name="long" javaType="long" parameterType="s8" fieldType="s8"/> 
1224   <XmlType name="int" javaType="int" parameterType="s4" fieldType="s4"/> 
1225   <XmlType name="short" javaType="short" parameterType="s2" fieldType="s2"/> 
1226   <XmlType name="byte" javaType="byte"  parameterType="s1" fieldType="s1"/> 
1227   <XmlType name="double" javaType="double" parameterType="double" fieldType="double"/> 
1228   <XmlType name="float" javaType="float"  parameterType="float" fieldType="float"/> 
1229   <XmlType name="boolean" javaType="boolean" parameterType="bool" fieldType="bool"/> 
1230   <XmlType name="char" javaType="char" parameterType="char" fieldType="char"/> 
1231   <XmlType name="string" javaType="java.lang.String" parameterType="const char*" fieldType="const char*"/> 
1232  
1233   <XmlContentType name="bytes" annotation="jdk.jfr.DataAmount(BYTES)" />
1234   <XmlContentType name="tickstamp" annotation="jdk.jfr.Timestamp(TICKS)" />
1235   <XmlContentType name="epochmillis" annotation="jdk.jfr.Timestamp(MILLISECONDS_SINCE_EPOCH)" />
1236   <XmlContentType name="tickspan" annotation="jdk.jfr.Timespan(TICKS)" />
1237   <XmlContentType name="address" annotation="jdk.jfr.MemoryAddress" />
1238   <XmlContentType name="percentage" annotation="jdk.jfr.Percentage" />
1239   <XmlContentType name="millis" annotation="jdk.jfr.Timespan(MILLISECONDS)" />
1240   <XmlContentType name="nanos" annotation="jdk.jfr.Timespan(NANOSECONDS)" />
1241   <XmlContentType name="hertz" annotation="jdk.jfr.Frequency" />
1242   <XmlContentType name="bytes-per-second" annotation="jdk.jfr.DataAmount(BYTES), jdk.jfr.Frequency" />
1243   <XmlContentType name="bits-per-second" annotation="jdk.jfr.DataAmount(BITS), jdk.jfr.Frequency" />
1244  
1245 </Metadata>