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https://issues.apache.org/jira/browse/FLINK-17842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17112056#comment-17112056
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Piotr Nowojski commented on FLINK-17842:
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Those are the commits in suspected range:
{noformat}
2f18138df2 [26 hours ago] [FLINK-17809][dist] Quote classpath and
FLINK_CONF_DIR [Chesnay Schepler]
31ec497b96 [2 days ago] [FLINK-17763][dist] Properly handle log properties and
spaces in scala-shell.sh [Chesnay Schepler]
2aacb62c29 [13 days ago] [FLINK-17547][task] Implement getUnconsumedSegment for
spilled buffers [Roman Khachatryan]
54155744bd [13 days ago] [FLINK-17547][task] Use RefCountedFile in
SpanningWrapper (todo: merge with next?) [Roman Khachatryan]
2fcc1fca7c [13 days ago] [FLINK-17547][task][hotfix] Move RefCountedFile to
flink-core to use it in SpanningWrapper [Roman Khachatryan]
179de29f09 [13 days ago] [FLINK-17547][task][hotfix] Extract
RefCountedFileWithStream from RefCountedFile Motivation: use RefCountedFile for
reading as well. [Roman Khachatryan]
37f441a2fc [2 days ago] [FLINK-17547][task] Use iterator for unconsumed
buffers. Motivation: support spilled records Changes: 1. change
SpillingAdaptiveSpanningRecordDeserializer.getUnconsumedBuffer signature 2.
adapt channel state persistence to new types [Roman Khachatryan]
824100e146 [8 days ago] [FLINK-17547][task][hotfix] Extract methods from
RecordsDeserializer [Roman Khachatryan]
67d3eae6f1 [8 days ago] [FLINK-17547][task][hotfix] Fix compiler warnings in
NonSpanningWrapper [Roman Khachatryan]
d7b29f7bb5 [2 weeks ago] [FLINK-17547][task][hotfix] Extract SpanningWrapper
from SpillingAdaptiveSpanningRecordDeserializer (static inner class). As it is,
no logical changes. [Roman Khachatryan]
6e3c5abf7b [2 weeks ago] [FLINK-17547][task][hotfix] Extract NonSpanningWrapper
from SpillingAdaptiveSpanningRecordDeserializer (static inner class) As it is,
no logical changes. [Roman Khachatryan]
8548d37df6 [13 days ago] [FLINK-17547][task][hotfix] Improve error handling 1
catch one more invalid input in DataOutputSerializer.write 2 more informative
error messages [Roman Khachatryan]
{noformat}
It means the regression was probably caused by FLINK-17547 CC
[~roman_khachatryan]
> Performance regression on 19.05.2020
> ------------------------------------
>
> Key: FLINK-17842
> URL: https://issues.apache.org/jira/browse/FLINK-17842
> Project: Flink
> Issue Type: Bug
> Components: Benchmarks
> Affects Versions: 1.11.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Blocker
> Fix For: 1.11.0
>
>
> There is a noticeable performance regression in many benchmarks:
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerHeavyString&env=2
> http://codespeed.dak8s.net:8000/timeline/?ben=networkThroughput.1000,1ms&env=2
> http://codespeed.dak8s.net:8000/timeline/?ben=networkThroughput.100,100ms&env=2
> http://codespeed.dak8s.net:8000/timeline/?ben=globalWindow&env=2
> that happened on May 19th, probably between 260ef2c and 2f18138
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