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https://issues.apache.org/jira/browse/KAFKA-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15340672#comment-15340672
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ASF GitHub Bot commented on KAFKA-3769:
---------------------------------------
GitHub user guozhangwang opened a pull request:
https://github.com/apache/kafka/pull/1530
KAFKA-3769: Create new sensors per-thread in KafkaStreams
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/guozhangwang/kafka K3769-per-thread-metrics
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1530.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1530
----
commit 8a8efa52bc5538ba933f85a0cdb9196d4a222e10
Author: Guozhang Wang <[email protected]>
Date: 2016-06-20T23:02:34Z
use per-thread sensor names
commit 25859f4b5121e19602741809c18864d99a84574f
Author: Guozhang Wang <[email protected]>
Date: 2016-06-20T23:02:40Z
Merge branch 'trunk' of https://git-wip-us.apache.org/repos/asf/kafka into
K3769-per-thread-metrics
commit 5fae56123fabc0568a99c27ba5b2e792b9f6a685
Author: Guozhang Wang <[email protected]>
Date: 2016-06-20T23:29:47Z
remove unused imports
----
> 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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