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https://issues.apache.org/jira/browse/TAP5-945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12787764#action_12787764
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Massimo Lusetti commented on TAP5-945:
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I will definitely for the latter.
BTW Olle could you try to remove the sync blocks and see what happen?
> Lock contention in PerthreadManagerImpl
> ---------------------------------------
>
> Key: TAP5-945
> URL: https://issues.apache.org/jira/browse/TAP5-945
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.1.0.5
> Reporter: Olle Hallin
> Priority: Minor
>
> When load testing our new high-volume site before soft launch, we found that
> we have severe lock contention in
> org.apache.tapestry5.ioc.internal.services.PerthreadManagerImpl.
> It synchronizes on "this" before invoking ThreadLocal.get() and
> ThreadLocal.remove(), which I believe is unnecessary.
> During our tests, approximately 35% of all Tomcat threads were waiting for
> this lock in any of 10 thread dumps taken 15 seconds apart.
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