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https://issues.apache.org/jira/browse/AMQ-5109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13956435#comment-13956435
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Gary Tully commented on AMQ-5109:
---------------------------------
this may provide a test case - seems to be the same issue
> "Soft deadlock" in TransportConnection causes degraded performance in certain
> situations
> ----------------------------------------------------------------------------------------
>
> Key: AMQ-5109
> URL: https://issues.apache.org/jira/browse/AMQ-5109
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.9.0
> Environment: HP-UX 11.31, RHEL 5/6. HP JDK 6/7, Oracle JDK 6/7
> Reporter: Nikolay Martynov
> Priority: Minor
> Labels: patch
> Attachments: TransportConnection.java.patch
>
>
> "Soft" deadlock occurres due to async stopping in case of starting/stopping
> lots of client connections (using jms template with standard connection
> factory, for example). ActiveMQ BrokerService gets frozen for 1 second trying
> to acquire the lock. As a result, already poor performance in case of
> unpooled connection factory further degrades by around 50%.
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