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https://issues.apache.org/jira/browse/TAPESTRY-2604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Koelmann updated TAPESTRY-2604:
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Attachment: ThreadDumps.zip
> Synchronization Bottleneck in ComponentConstructorFactoryImpl
> -------------------------------------------------------------
>
> Key: TAPESTRY-2604
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2604
> Project: Tapestry
> Issue Type: Bug
> Components: Framework
> Affects Versions: 4.1.5
> Environment: JDK 1.5.0_14 64 bit, Tomcat 5.5.26
> Reporter: Stefan Koelmann
> Attachments: ThreadDumps.zip
>
>
> After fixing TAPESTRY-2530, it seems we got another performance bottleneck
> during page rendering: Under rather heavy load a lot of threads get stuck at
> ComponentConstructorFactoryImpl.getComponentConstructor. It seems the lock is
> held to long; a lot of threads gets queued and the application stops
> responding properly.
> I attached two threaddumps showing the problem. A possible solution could be
> to split the synchronization lock; guarding only the private field
> _cachedConstructors and not the construction of a new constructors, if this
> is necessary.
> Thanks for your help,
> Stefan
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