flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2343) Change default garbage collector in streaming environments
Date Mon, 13 Jul 2015 18:09:05 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14625066#comment-14625066
] 

ASF GitHub Bot commented on FLINK-2343:
---------------------------------------

Github user uce commented on the pull request:

    https://github.com/apache/flink/pull/901#issuecomment-121009426
  
    Looks good. +1.
    
    Maybe we can move the JAVA_VERSION to the env/config script to have it only in one place
while merging. I'm merging this. Thanks.


> Change default garbage collector in streaming environments
> ----------------------------------------------------------
>
>                 Key: FLINK-2343
>                 URL: https://issues.apache.org/jira/browse/FLINK-2343
>             Project: Flink
>          Issue Type: Improvement
>          Components: Start-Stop Scripts
>    Affects Versions: 0.10
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>             Fix For: 0.10
>
>
> When starting Flink, we don't pass any particular GC related JVM flags to the system.
That means, it uses the default garbage collectors, which are the bulk parallel GCs for both
old gen and new gen.
> For streaming applications, this results in vastly fluctuating latencies. Latencies are
much more constant with either the {{CMS}} or {{G1}} GC.
> I propose to make the CMS the default GC for streaming setups.
> G1 may become the GC of choice in the future, but fro various articles I found, it is
still somewhat in "beta" status (see for example here: http://jaxenter.com/kirk-pepperdine-on-the-g1-for-java-9-118190.html
)



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message