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https://issues.apache.org/jira/browse/CASSANDRA-11514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15230918#comment-15230918
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Michael Shuler commented on CASSANDRA-11514:
--------------------------------------------
Larger run on DTCS
[trunk_3.5_3.0-compaction_DTCS|http://cstar.datastax.com/tests/artifacts/c9dd18fc-fcd7-11e5-8f8b-0256e416528f/graph]
seems to support that trunk and 3.5 both have this commit. The differences
seem pretty small, so it could be difficult to determine a difference between 2
commits.
> 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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