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Clarify support for GraalVM JIT and Datadog Profiler #30308

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Clarify support for GraalVM JIT and Datadog Profiler #30308

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Clarify support for GraalVM JIT and Datadog Profiler
jbachorik Jul 7, 2025
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Merge branch 'master' into jb/graalvm_jit_profiler
aliciascott Jul 7, 2025
159c59e
Update content/en/profiler/enabling/java.md
jbachorik Jul 8, 2025
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5 changes: 4 additions & 1 deletion content/en/profiler/enabling/java.md
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Expand Up @@ -37,7 +37,10 @@ Minimum JDK versions:
- OpenJ9 JDK 8u372+, 11.0.18+, 17.0.6+ (used on Eclipse OpenJ9, IBM JDK, IBM Semeru Runtime). The profiler is disabled by default for OpenJ9 due to the possibility of crashing JVM caused by a subtle bug in JVTMI implementation. If you are not experiencing any crashes, you can enable the profiler by adding `-Ddd.profiling.ddprof.enabled=true`.
- Azul Platform Prime 23.05.0.0+ (formerly Azul Zing)

The Datadog Profiler uses the JVMTI `AsyncGetCallTrace` function, in which there is a [known issue][1] prior to JDK release 17.0.5. This fix was backported to 11.0.17 and 8u352. The Datadog Profiler is not enabled unless the JVM the profiler is deployed into has this fix. Upgrade to at least 8u352, 11.0.17, 17.0.5, 21, or the latest non-LTS JVM version to use the Datadog Profiler.

**Note:** The Datadog Profiler is disabled on the GraalVM compiler (JVMCI) and needs to be enabled explicitly with `-Ddd.profiling.ddprof.enabled=true` or `DD_PROFILING_DDPROF_ENABLED=true`.

The Datadog Profiler uses the JVMTI `AsyncGetCallTrace` function, in which there is a [known issue][1] prior to JDK release 17.0.5. This fix was backported to 11.0.17 and 8u352. The Datadog Profiler is not enabled unless the JVM the profiler is deployed into has this fix. Upgrade to at least 8u352, 11.0.17, 17.0.5, or the latest non-LTS JVM version to use the Datadog Profiler.

[1]: https://bugs.openjdk.org/browse/JDK-8283849
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