Alexander Fedulov created FLINK-26074:
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Summary: Improve FlameGraphs scalability for high parallelism jobs
Key: FLINK-26074
URL: https://issues.apache.org/jira/browse/FLINK-26074
Project: Flink
Issue Type: Improvement
Reporter: Alexander Fedulov
The FlameGraph feature added in FLINK-13550 issues 1 RPC call per subtask. This
may cause performance problems for jobs with high paralleism and a lot of
subtask running on the same TaskManager. It should be possible to improve this
by grouping thread sampling requests using
{code:java}
ThreadMXBean.getThreadInfo(long[] ids, int maxDepth){code}
instead of the currently used individual calls
{code:java}
ThreadMXBean.getThreadInfo(long id, int maxDepth){code}
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