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https://issues.apache.org/jira/browse/SLING-4999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14947386#comment-14947386
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Carsten Ziegeler commented on SLING-4999:
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I think the patch should do the trick. Would be interesting to see what the
impact performance wise is.
> Check synchronization in RequestProcessorMBeanImpl
> --------------------------------------------------
>
> Key: SLING-4999
> URL: https://issues.apache.org/jira/browse/SLING-4999
> Project: Sling
> Issue Type: Improvement
> Components: Engine
> Affects Versions: Engine 2.4.2
> Reporter: Carsten Ziegeler
> Fix For: Engine 2.4.4
>
> Attachments:
> 0001-SLING-4999-Check-synchronization-in-RequestProcessor.patch
>
>
> Each and every request goes through RequestProcessorMBeanImpl#addRequestData
> which is a synchronized block. I think this is a rather heavy bottleneck for
> request processing.
> In addition, some of the methods which do additional calculation are sync'ed
> (like getStandardDeviationDurationMsec) but others are not (like
> getStandardDeviationPeakRecursionDepth). This seems a little bit arbitrary to
> me
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