This looks like producer flow control. see: http://activemq.apache.org/slow-consumer-handling.html and in particular turn off flow control: http://activemq.apache.org/producer-flow-control.html
Are you seeing this with the vanilla producer and consumer scripts from the examples? 2008/12/11 trevoro <[email protected]>: > > I see this same problem. I'm using ActiveMQ 5.2.0 and Sun JDK1.6.0_02. > > When we try and post a large number of messages to a Queue it stalls after > 4096 messages. If I leave the publisher running and flush the queue, it will > receive a few hundred more messages prior to stalling again. This issue does > not occur on ActiveMQ 5.1.0. > > Increasing the queue memory limit to 20mb allows me to put 10,000 messages > through in a couple seconds, however attempting to put more messages through > the queue results in a stall. I can keep going down this path. I currentl > have it set at 256 megs for the queue memory limit, and I can put 100,000 > messages through in ~25 seconds. > > The biggest problem is the CPU utilization during this time. ActiveMQ > consumes about 50% of the CPU while putting these messages on the queue. > ActiveMQ 5.1.0 did not exhibit this type of behavior during heavy load. > > Any thoughts? > > mysomicra wrote: >> >> I wrote a quick performance test to send 100,000 messages to newly >> installed activeMQ broker and am noticing odd behaviour. >> >> The producer blocks at exactly the same number of sent messages each time >> - 5091, and on the machine where activeMQ is installed, its cpu usage >> drops to zero. >> >> The seamingly odd thing is that while the producer is blocking, if I go >> into the web console and view the stalled queue - >> http://appserver:8161/admin/browse.jsp?JMSDestination=queuejms.testQueue, >> the whole thing winds back up immediately and the entire send completes >> about a minute later. >> >> I have tried tweaking various systemUsage parameters, but get exactly the >> same result. >> > > -- > View this message in context: > http://www.nabble.com/Queue-repeatedly-stalls-tp20804233p20947050.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > > -- http://blog.garytully.com Open Source SOA http://FUSESource.com
