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https://issues.apache.org/jira/browse/FLINK-15171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17006825#comment-17006825
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Chesnay Schepler commented on FLINK-15171:
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[~pnowojski] Looks like the regression got mostly fixed. For tuples/row/pojo we
appear to be getting better numbers than before; although for heavy strings it
looks like we took a small performance hit.
> Performance regression in serialisation benchmarks
> --------------------------------------------------
>
> Key: FLINK-15171
> URL: https://issues.apache.org/jira/browse/FLINK-15171
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System, Benchmarks
> Affects Versions: 1.10.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Attachments: dec05.svg, dec11.svg
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> There is quite significant performance regression in serialisation benchmarks
> in the commit range 2ecf7ca..9320f34 (which includes FLINK-14346).
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerTuple&env=2
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerRow&env=2
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerPojo&env=2
> it coincides with the performance improvement for heavy strings
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerHeavyString&env=2
> it might be caused by some accidental change in the benchmarking code
> (changing parallelism in one benchmarks is carried on to the next one?) or in
> the code itself.
> CC [~rgrebennikov] [~AHeise]
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