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From JRadecki <>
Subject Re: [jira] Commented: (AMQ-1490) Deadlocks (with JUnit tests)
Date Thu, 03 Jan 2008 21:42:20 GMT

"running into a deadlock etc."
First, let me say ACTIVEMQ 5.1.0 Is GREAT!

Now for some free information:

I have been working on a RT/SOA w/ActiveMQ for the past few months, under
very heavy performance load, w/many queues and many competing
consumers,producers, and such; AMQ5.0&&AMQ5.1 will deadlock.

After much pain, and re-configuring; I can say for ceratin WHAT FIXED THE
PROBLEM FOR ME :)'.  I noticed
the Journals would never get past 3-6 iterations of 32MB.  I started
planning with the pendingQueuePolicy
and noticed once I switched the queues to a fileQueueCursor, everything
works perfect now!  I have
presented an example below.  I would think a simple junit will produce
similar results; sorry, I would like to make one; moreover deadlines and
such.  Anyway; Great work, and I really enjoy your
product the more I work w/it.
Best regards

producerFlowControl="false" memoryLimit="10mb">
              <individualDeadLetterStrategy queuePrefix="DLQ."/>
            	<fileQueueCursor />

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