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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/10/30 09:28:40 UTC

[GitHub] [flink-benchmarks] pnowojski edited a comment on pull request #5: [FLINK-19884] Add benchmarks for batch-style execution for bounded keyed streams

pnowojski edited a comment on pull request #5:
URL: https://github.com/apache/flink-benchmarks/pull/5#issuecomment-719444159


   I've tried to profile the benchmark and:
   
   1. results are very unstable :( I don't know why, maybe because of GC? because...
   2. `GC overhead limit exceeded`
   ```
   Iteration  14: 126017.810 ops/ms
   Iteration  15: 91305.667 ops/ms
   Iteration  16: 43366.582 ops/ms
   Iteration  17: <failure>
   
   java.lang.OutOfMemoryError: GC overhead limit exceeded
   	at java.util.Arrays.copyOf(Arrays.java:3236)
   	at java.io.ByteArrayOutputStream.toByteArray(ByteArrayOutputStream.java:191)
   ```
   It looks like there is some resource leak (on my machine it always happens around 17th or 18th iteration)


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