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https://issues.apache.org/jira/browse/AMQ-5109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946773#comment-13946773
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Nikolay Martynov commented on AMQ-5109:
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Sorry, we have no unit test. The problem was discovered, troubleshooted and
fixed thanks to the load test for the application. It should be possible,
however, to reproduce it with JMSTemplate or code like in it.
> "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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