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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 <wangg...@gmail.com> Date: 2016-06-20T23:02:34Z use per-thread sensor names commit 25859f4b5121e19602741809c18864d99a84574f Author: Guozhang Wang <wangg...@gmail.com> 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 <wangg...@gmail.com> 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)