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https://issues.apache.org/jira/browse/FLINK-38315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18022081#comment-18022081
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Zakelly Lan commented on FLINK-38315:
-------------------------------------
I failed to reproduce this at my local env. And the perf results show that the
regression is only for JDK17
[http://flink-speed.xyz/timeline/?exe=6%2C12%2C13&base=&ben=writeKryo&env=3&revs=200&equid=off&quarts=on&extr=on]
. I have read through the test code and investigate the commits, but didn't
find anything suspicious.
IMO, we can treat this a jitter without a fix. This might be caused by GC or
JIT.
> Performance regression since August 21
> --------------------------------------
>
> Key: FLINK-38315
> URL: https://issues.apache.org/jira/browse/FLINK-38315
> Project: Flink
> Issue Type: Bug
> Components: Tests
> Reporter: Ruan Hang
> Priority: Major
> Fix For: 2.2.0
>
>
> Performance regression since August 21
> [valueGet.ROCKSDB(Java17)|http://flink-speed.xyz/timeline/#/?exe=11&ben=valueGet.ROCKSDB&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=520.447496 current_value=498.156496
> [valueGet.ROCKSDB_CHANGELOG(Java17)|http://flink-speed.xyz/timeline/#/?exe=11&ben=valueGet.ROCKSDB_CHANGELOG&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=520.495978 current_value=493.244493
> [valueUpdate.HEAP(Java17)|http://flink-speed.xyz/timeline/#/?exe=11&ben=valueUpdate.HEAP&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=2540.361088 current_value=2397.544119
> [stringWrite.16384.chinese(Java21)|http://flink-speed.xyz/timeline/#/?exe=13&ben=stringWrite.16384.chinese&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=0.50725 current_value=0.435287
> [listAppend.ROCKSDB(Java21)|http://flink-speed.xyz/timeline/#/?exe=15&ben=listAppend.ROCKSDB&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=427.261169 current_value=410.061681
> [valueGet.ROCKSDB(Java21)|http://flink-speed.xyz/timeline/#/?exe=15&ben=valueGet.ROCKSDB&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=522.45216 current_value=489.403236
> [valueUpdate.HEAP(Java21)|http://flink-speed.xyz/timeline/#/?exe=15&ben=valueUpdate.HEAP&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=2448.544924 current_value=2336.321864
> [mapIsEmpty.HEAP(Java11)|http://flink-speed.xyz/timeline/#/?exe=9&ben=mapIsEmpty.HEAP&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=2296.86288 current_value=2193.613707
> [valueAdd.HEAP(Java11)|http://flink-speed.xyz/timeline/#/?exe=9&ben=valueAdd.HEAP&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=2442.054371 current_value=2324.212168
> [valueGet.HEAP(Java11)|http://flink-speed.xyz/timeline/#/?exe=9&ben=valueGet.HEAP&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=2650.799189 current_value=2541.316634
>
> Performance regression since September 2
> [stringWrite.16384.chinese(Java21)|http://flink-speed.xyz/timeline/#/?exe=13&ben=stringWrite.16384.chinese&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=0.50725 current_value=0.435575
> [writeKryo(Java17)|http://flink-speed.xyz/timeline/#/?exe=12&ben=writeKryo&extr=on&quarts=on&equid=off&env=3&revs=200]
> baseline=603.939225 current_value=568.063488
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