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From "Michael Shuler (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-11514) trunk compaction performance regression
Date Thu, 07 Apr 2016 15:41:25 GMT


Michael Shuler commented on CASSANDRA-11514:

shows that both trunk and 3.5 seem to have the same issue. 'op rate' text and 'Total operations'
graph seem to agree.
is less conclusive.

I'm going to run both for a longer period and write more data to see if I can get a little
more definitive answer.

> trunk compaction performance regression
> ---------------------------------------
>                 Key: CASSANDRA-11514
>                 URL:
>             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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