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https://issues.apache.org/jira/browse/KUDU-636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17154526#comment-17154526
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Grant Henke commented on KUDU-636:
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Protobuf Arenas are now used as of
https://github.com/apache/kudu/commit/fe15af8496af524b6de3392772edeec88dc8a626
> optimization: we spend a lot of time in alloc/free
> --------------------------------------------------
>
> Key: KUDU-636
> URL: https://issues.apache.org/jira/browse/KUDU-636
> Project: Kudu
> Issue Type: Improvement
> Components: perf
> Affects Versions: Public beta
> Reporter: Todd Lipcon
> Priority: Major
>
> Looking at a workload in the cluster, several of the top 10 lines of perf
> report are tcmalloc-related. It seems like we don't do a good job of making
> use of the per-thread free-lists, and we end up in a lot of contention on the
> central free list. There are a few low-hanging fruit things we could do to
> improve this for a likely perf boost.
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