[AMQ-903] ActivemMQ slows down after a rather small number of messages

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.1
• Fix Version/s: 5.3.0
• Assignee: Unassigned
• Reporter: Daniel Aioanei
• Created: 30/Aug/06 13:56
• Updated: 29/Aug/09 06:05
• Resolved: 29/Aug/09 06:05

Description

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&wireFormat.tightEncodingEnabled=false" />
</bean>