[jira] Commented: (AMQ-735) Possible 4.0 consumer client memory leak?
[ https://issues.apache.org/activemq/browse/AMQ-735?page=comments#action_36565 ] Niclas Hedhman commented on AMQ-735: Does that mean ActiveMQ will also not throw away acknowledged messages and hold them around as well? We are looking at a 1 message per 2 seconds which are consumed in milliseconds, and yet (in 4.0.1) we are running out of memory. That is true for transacted/non-transacted as well as auto-acknowledge and client-acknowledge. However, we also see that Lingo has no such problems, so perhaps we should try to look into the Lingo sources to check how it uses ActiveMQ. Any pointer? Btw, not sure if spring-jms throws anything particular into the mix either... > Possible 4.0 consumer client memory leak? > - > > Key: AMQ-735 > URL: https://issues.apache.org/activemq/browse/AMQ-735 > Project: ActiveMQ > Type: Bug > Components: JMS client > Versions: 4.0 > Environment: windows xp pro, jdk 1.5, AMQ 4.0 (incubator) > Reporter: Karthik Sethuraman > Assignee: james strachan > Priority: Critical > Fix For: 4.0.1 > Attachments: activemq_735.zip, instance.zip, jmsmon.zip > > > On running the attached test programs (one producer on a topic, one consumer > on a topic), the consumer eventually encounters OutOfMemoryError after > receiving around 64 MB of messages). Default JVM heap size is used (64 MB). > The problem does not happen with RC2 build. > The test programs allows specification of message payloads of different > sizes and different message rates, as well number of producer/consumer > threads/instances., topics and topic connection factories, via user > environment variables. > http://www.nabble.com/4.0+Consumer+OutOfMemoryError+bug--t1707655.html#a4660556 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/activemq/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Commented: (AMQ-735) Possible 4.0 consumer client memory leak?
[ https://issues.apache.org/activemq/browse/AMQ-735?page=comments#action_36261 ] Feng Wang commented on AMQ-735: --- I profiled DumpDumpJMSMsg.java because that is the one will throw "out of memory" error very quickly. I have attached the image for the instance count (instance.png). As you can see, byte array took the most of memory. But the counts of MessageDispatch, ActiveMQObjectMessage and MessageId keep increasing. In the previouslyploaded pictures, there was a loop in MessageDispatch reference graph. Usually it is a sign of memory leak. I guess that in Release 4 you start to use concurrent packge from emory universiy (but not RC2 build). CopyOnWriteArrayList is from concurrent package and take a look at middle.png. CopyOnWriteArrayList has a reference to object[1]. Since I am quite new to ActiveMQ and emory concurrent package (only 2 days), I am not sure where the problem is. > Possible 4.0 consumer client memory leak? > - > > Key: AMQ-735 > URL: https://issues.apache.org/activemq/browse/AMQ-735 > Project: ActiveMQ > Type: Bug > Components: JMS client > Versions: 4.0 > Environment: windows xp pro, jdk 1.5, AMQ 4.0 (incubator) > Reporter: Karthik Sethuraman > Priority: Critical > Attachments: activemq_735.zip, jmsmon.zip > > > On running the attached test programs (one producer on a topic, one consumer > on a topic), the consumer eventually encounters OutOfMemoryError after > receiving around 64 MB of messages). Default JVM heap size is used (64 MB). > The problem does not happen with RC2 build. > The test programs allows specification of message payloads of different > sizes and different message rates, as well number of producer/consumer > threads/instances., topics and topic connection factories, via user > environment variables. > http://www.nabble.com/4.0+Consumer+OutOfMemoryError+bug--t1707655.html#a4660556 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/activemq/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
