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Posted to dev@kafka.apache.org by "Greg Fodor (JIRA)" <ji...@apache.org> on 2016/05/30 06:52:12 UTC

[jira] [Commented] (KAFKA-3769) KStream job spending 60% of time writing metrics

    [ https://issues.apache.org/jira/browse/KAFKA-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15306306#comment-15306306 ] 

Greg Fodor commented on KAFKA-3769:
-----------------------------------

https://github.com/apache/kafka/pull/1447

> KStream job spending 60% of time writing metrics
> ------------------------------------------------
>
>                 Key: KAFKA-3769
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3769
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 0.10.0.0
>            Reporter: Greg Fodor
>            Assignee: Guozhang Wang
>            Priority: Critical
>
> I've been profiling a complex streams job, and found two major hotspots when writing metrics, which take up about 60% of the CPU time of the job. (!) A PR is attached.



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