Description

We have released JVM Profiling in https://github.com/getsentry/sentry-java/releases/tag/8.23.0

There are still tasks /improvements we could do:

• Docs
• Release registry entries
• Add module to .craft.yml
• Verify caching behaviour of ServiceLoader is not an issue (i.e. does not cause a large overhead on each chunk) - otherwise cache
• Remove / reduce vendored code and replace what's possible with JFR converter, also see Expose a dictionary of javaThreads from JfrReader async-profiler/async-profiler#1525
• Upgrade async-profiler to 4.1+ to support newer Java Versions (23+); there are issues with a Converter dictionary
• Log a specific message why Profiling isn't enabled if the wrong config property for setting sample rate is used (profiles-sample-rate) on JVM
• Enable / showcase Profiling in (more of) our samples
• Allow configuring profilingTracesHz via sentry.properties (ExternalOptions)
• Add a .cursor rules file to explain how Profiling works
• We could reduce profile chunk size / duration based on thread count of the application. This could help in case profiles are dropped due to being too large. Thread.activeCount() or ThreadMXBean (more accurate)
• Continuous Profiling could upload JFR files #4768 (we should wait for feedback first, maybe we don't need this)
• JVM Profiling Windows support #4779