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https://issues.apache.org/activemq/browse/AMQ-1231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Davies reassigned AMQ-1231:
-------------------------------
Assignee: Rob Davies
> Performance issues with
> org/apache/activemq/broker/region/PrefetchSubscription.java and
> org/apache/activemq/store/kahadaptor/KahaTopicMessageStore.java
> -------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AMQ-1231
> URL: https://issues.apache.org/activemq/browse/AMQ-1231
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Broker
> Affects Versions: 5.0.0
> Reporter: Kevin Yaussy
> Assignee: Rob Davies
> Fix For: 5.1.0
>
> Attachments: KahaTopicMessageStore.java, PrefetchSubscription.java
>
>
> Using Solaris 10 DTrace, I found a couple intense synchronization
> pinch-points in the Broker. Without altering the locking semantics, I
> converted the synchronized methods and one synchronized code block to the JDK
> 1.5 ReentrantLock. There was a pretty significant performance benefit with
> this change. I've attached the code, together with the old synchronized code
> commented out for ease of change examination.
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