[
https://issues.apache.org/jira/browse/KAFKA-2950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15043582#comment-15043582
]
ASF GitHub Bot commented on KAFKA-2950:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/632
> Performance regression in producer
> ----------------------------------
>
> Key: KAFKA-2950
> URL: https://issues.apache.org/jira/browse/KAFKA-2950
> Project: Kafka
> Issue Type: Bug
> Reporter: Jay Kreps
> Fix For: 0.9.0.1
>
>
> For small messages the producer has gotten slower since the 0.8 release. E.g.
> for a single thread on linux sending 100 byte messages the decrease seems to
> be about 30%. The root cause seems to be that the new timeout we added for
> max.block.ms ends up doing about 4 more system calls to check the ellapsed
> time.
> The reason for these calls is to detect slow serializers or partitioners. But
> I think this is not worth the performance hit. I think we can say the config
> is only for blocking due to metadata or memory allocation.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
