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https://issues.apache.org/jira/browse/FLINK-8172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16316383#comment-16316383
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ASF GitHub Bot commented on FLINK-8172:
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Github user pnowojski closed the pull request at:
https://github.com/apache/flink/pull/5104
> Remove unnecessary synchronisation in RecordSerializer
> ------------------------------------------------------
>
> Key: FLINK-8172
> URL: https://issues.apache.org/jira/browse/FLINK-8172
> Project: Flink
> Issue Type: Improvement
> Components: Network
> Affects Versions: 1.4.0, 1.3.2
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Fix For: 1.5.0
>
>
> While writing the records, RecordSerializer is the only owner of the `Buffer`
> into which data are written. Yet we are synchronisation twice per record
> while accessing MemorySegment. Removing this synchronisation speeds up the
> Network throughput in point to point benchmark by a factor of two (from
> ~12500records/ms up to 23000 records/ms).
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