On 3/5/07, kchamber <[EMAIL PROTECTED]> wrote:
I have ActiveMQ integrated in with JBoss according to the instructions listed on this website, and I am looking at how to maximize the throughput for the MDBs listening on a single non-persistent queue. Specifically, I can have several hundred messages on the queue consistently (looking at the queueSize), but I only ever get about 10 MDBs allocated. Various gyrations of changing the activation config settings for maxSessions, maxMessagesPerSession yield very different results, (including messages never getting processed). Is there any documentation that points to "how" MDBs get allocated? I have tried changing "MaximumSize" values within various jboss XML config thread pools and also setting the max-pool-size on the ActiveMQ QueueConstructor. Instead of the guess-work, I'd like to know how to configure the number of MDBs that will get allocated for processing incoming requests on a specific queue.
For MDB configuration, you'd best check JBoss documentation. I'm wondering if this is to do with prefetch http://activemq.apache.org/what-is-the-prefetch-limit-for.html Could you try putting say 10,000 messages on the queue first and seeing how things behave after steady state? -- James ------- http://radio.weblogs.com/0112098/
