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Posted to dev@kafka.apache.org by "Ismael Juma (JIRA)" <ji...@apache.org> on 2015/10/14 23:31:05 UTC

[jira] [Commented] (KAFKA-2655) Consumer.poll(0)'s overhead too large

    [ https://issues.apache.org/jira/browse/KAFKA-2655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14957824#comment-14957824 ] 

Ismael Juma commented on KAFKA-2655:
------------------------------------

It would be good to get some actual numbers before we try to optimise. JMH recommend.

> Consumer.poll(0)'s overhead too large
> -------------------------------------
>
>                 Key: KAFKA-2655
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2655
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: consumer
>            Reporter: Guozhang Wang
>            Assignee: Jason Gustafson
>             Fix For: 0.9.0.1
>
>
> Currently with a single partition, even if it is paused, calling poll(0) could still be costing as much as 1ms since it triggers a few system calls. Some of those can possibly be optimized away.



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