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From "Daniel Aioanei (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-903) ActivemMQ slows down after a rather small number of messages
Date Wed, 30 Aug 2006 13:58:23 GMT
ActivemMQ slows down after a rather small number of messages
------------------------------------------------------------

                 Key: AMQ-903
                 URL: https://issues.apache.org/activemq/browse/AMQ-903
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 4.0.1
            Reporter: Daniel Aioanei
         Attachments: activemq.xml

I have activemq with a postgresql backend running as a standalone server, and a client application
that produces persistent messages in 50 threads. Each time I run my app it pushes as many
msg as it can for about 62.5 seconds after which it quits. Although initially it works fast,
every time I run my app it produces less messages:

enqueue speed 50 threads: msg/second: 334.18333333333334
             second time: msg/second: 194.15
              third time: msg/second: 123.0
             fourth time: msg/second: 58.61666666666667
              fifth time: msg/second: 19.433333333333334
              sixth time: msg/second: 33.81666666666667
            seventh time: msg/second: 11.783333333333333
              eigth time: msg/second: 24.733333333333334
             ninght time: msg/second: 10.883333333333333

After I ran the above test there seem to be 50241 msg in that queue.

activemq=> select count(1) from activemq_msgs ;
 count
-------
 50241
(1 row)

activemq=> select count(1) from activemq_acks ;
 count
-------
     0
(1 row)

Note that I don't have any message consumers active for this test.

Here is the way the client app connects:

	<bean id="jmsResourceAdapter"
		class="org.apache.activemq.ra.ActiveMQResourceAdapter">
		<property name="serverUrl" value="tcp://localhost:61616?wireFormat.cacheEnabled=false&amp;wireFormat.tightEncodingEnabled=false"
/>
	</bean>


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