[jira] [Commented] (CASSANDRA-11514) trunk compaction performance regression

["Marcus Eriksson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-11514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15267232#comment-15267232 ] 

Marcus Eriksson commented on CASSANDRA-11514:
---------------------------------------------

What are we measuring here? Write performance or compaction performance? The graph looks like it is write perf?

> trunk compaction performance regression
> ---------------------------------------
>
>                 Key: CASSANDRA-11514
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11514
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Compaction
>         Environment: cstar_perf
>            Reporter: Michael Shuler
>              Labels: performance
>             Fix For: 3.x
>
>         Attachments: trunk-compaction_dtcs-op_rate.png, trunk-compaction_lcs-op_rate.png
>
>
> It appears that a commit between Mar 29-30 has resulted in a drop in compaction performance. I attempted to get a log list of commits to post here, but
> {noformat}
> git log trunk@{2016-03-29}..trunk@{2016-03-31}
> {noformat}
> appears to be incomplete, since reading through {{git log}} I see netty and och were upgraded during this time period.
> !trunk-compaction_dtcs-op_rate.png!
> !trunk-compaction_lcs-op_rate.png!



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