Gary, I moved on to HornetQ as our underlying transport technology after we were not able to debug/fix this particular issue. I tried looking into the code etc.
Best Bhupesh On Wed, Dec 21, 2011 at 2:20 AM, Gary Tully [via ActiveMQ] < ml-node+s2283324n4221130...@n4.nabble.com> wrote: > @Bhupesh, > the prefetch may be part of the problem, as by default the broker will > try and dispatch 1000 messages to each consumer. If the consumer > (stomp connection) is short lived, this is a waste of resources. > > A consumers acks, will contend message production to some extent, this > is expected as they share a resource, the consumer dispatch queue. > Batching acks either using client ack mode or transactions helps > reduce the overhead. > > If you have not yet tried a 5.6-SNAPSHOT, can you verify it behaves the > same. > > > On 13 September 2011 08:54, bbansal <[hidden > email]<http://user/SendEmail.jtp?type=node&node=4221130&i=0>> > wrote: > > > Hey Folks, > > > > I tried the concurrentStoreAndDispatchQueues="false" and it didn't help. > I > > still see around 10X drop in producer throughput with backlog. > > > > 1 Queue , 8 producers, 2 consumers , No backlog : 1200 QPS (producer), > 1200 > > QPS (consumer) > > 1 Queue, 8 Producer, 2 consumer, 4GB backlog (2M events): 120 QPS > > (producer), 1200 QPS (consumer) > > > > I am attaching the scripts I am using, unfortunately I am using stomp > and a > > perl based consumer/producer setup. > > > > Best > > Bhupesh > > http://activemq.2283324.n4.nabble.com/file/n3809392/testcase.tar.gz > > testcase.tar.gz > > http://activemq.2283324.n4.nabble.com/file/n3809392/activemq-stomp.xml > > activemq-stomp.xml > > > > > > > > -- > > View this message in context: > http://activemq.2283324.n4.nabble.com/Backlog-data-causes-producers-to-slow-down-tp3806018p3809392.html > > > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > > > > -- > http://fusesource.com > http://blog.garytully.com > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://activemq.2283324.n4.nabble.com/Backlog-data-causes-producers-to-slow-down-tp3806018p4221130.html > To unsubscribe from Backlog data causes producers to slow down., click > here<http://activemq.2283324.n4.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=3806018&code=Ymh1cGVzaEBncm91cG9uLmNvbXwzODA2MDE4fC0yMDk5OTE3NDIy> > . > NAML<http://activemq.2283324.n4.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.InstantMailNamespace&breadcrumbs=instant+emails%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://activemq.2283324.n4.nabble.com/Backlog-data-causes-producers-to-slow-down-tp3806018p4222076.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
