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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2018/02/05 13:29:00 UTC

[jira] [Commented] (FLINK-8172) Remove unnecessary synchronisation in RecordSerializer

    [ https://issues.apache.org/jira/browse/FLINK-8172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16352373#comment-16352373 ] 

Chesnay Schepler commented on FLINK-8172:
-----------------------------------------

[~pnowojski] Was this issue subsumed by FLINK-8178?

> 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
>            Priority: Major
>             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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