List JFR events used in metrics

[brunobat]

The list will become big but is needed to understand the JFR events used in the creation of the JVM metrics.

[brunobat]

CC @roberttoyonaga

[otelbot-java-instrumentation]

🔧 The result from spotlessApply was committed to the PR branch.

[otelbot-java-instrumentation]

❌ The result from generateLicenseReport could not be committed to the PR branch, see logs: https://github.com/open-telemetry/opentelemetry-java-instrumentation/actions/runs/19433628217.

[roberttoyonaga]

For GraalVM Native Image

Events that are not applicable:
jdk.G1GarbageCollection, jdk.G1HeapSummary: G1 does not exist in community edition
jdk.MetaspaceSummary: there is no true metaspace in SubstrateVM
jdk.PSHeapSummary: No parallel GC
jdk.ObjectAllocationOutsideTLAB all slow path allocations are done in a new TLAB
jdk.OldGarbageCollection, jdk.YoungGarbageCollection : There is no true "old" and "eden" spaces. Everything is allocated in linked heap chunks.
jdk.ClassLoadingStatistics: Dynamic classloading is not allowed.

Events that are applicable, but not yet implemented:
jdk.CPULoad jdk.ThreadContextSwitchRate jdk.DirectBufferStatistics

[roberttoyonaga]

For OpenJ9

Only VM-level JFR events will work. OpenJ9 currently only has the VM-level JFR implementation. So events emitted at the Java level (ie. in jdk.jfr) will not be present. For example that means jdk.SocketRead, jdk.SocketWrite won't work.

[brunobat]

Thanks @jeanbisutti and @roberttoyonaga. Updated the PR with your contribs.

[brunobat]

Pushed

[otelbot]

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