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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3120) Set number of event loop thread and number of buffer pool arenas to same number
Date Fri, 05 Feb 2016 11:21:39 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15134024#comment-15134024
] 

ASF GitHub Bot commented on FLINK-3120:
---------------------------------------

Github user uce commented on the pull request:

    https://github.com/apache/flink/pull/1593#issuecomment-180305086
  
    (I forgot to add that in a small set of experiments with both YARN and Standalone setups
on 4 nodes I did not notice a difference in performance. For YARN, I tested both allocating
many small containers and few large ones.)


> Set number of event loop thread and number of buffer pool arenas to same number
> -------------------------------------------------------------------------------
>
>                 Key: FLINK-3120
>                 URL: https://issues.apache.org/jira/browse/FLINK-3120
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Runtime
>    Affects Versions: 0.10.1
>            Reporter: Ufuk Celebi
>            Assignee: Ufuk Celebi
>             Fix For: 0.10.2
>
>
> If a user changes the default number of event loop threads, the number of buffer pool
arenas is still the default (2 * cores). Both numbers should be the same to prevent buffer
allocation contention during runtime.



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