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https://issues.apache.org/jira/browse/RATIS-1141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz-wo Sze reassigned RATIS-1141:
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Assignee: Tsz-wo Sze
[~weichiu], thanks a lot for filing this JIRA.
> Class.getSimpleName() has a 4% overhead in the SegmentedRaftLogWriter thread
> ----------------------------------------------------------------------------
>
> Key: RATIS-1141
> URL: https://issues.apache.org/jira/browse/RATIS-1141
> Project: Ratis
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: Wei-Chiu Chuang
> Assignee: Tsz-wo Sze
> Priority: Major
> Attachments: Screen Shot 2020-11-09 at 3.48.33 PM.png
>
>
> See the attachment. I'm running a write benchmark for Ozone, and the
> DataNode's SegmentedRaftLogWriter spent 4% time on Class.getSimpleName().
> While 4% isn't a lot, Ratis performance is the major bottleneck on the Ozone
> DN write path. It would be great to remove this overhead.
> Also see
> https://stackoverflow.com/questions/17369304/why-is-class-getsimplename-not-cached
> OpenJDK11 caches this call, but not for JDK8 where most of the production
> workloads are running.
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