Hi, We are using activemq 5.5 on red hat linux to create a network of brokers across a WAN. The diagram below outlines the network of brokers we have created to support our particular use case. Two brokers in Sydney, two brokers in Houston, all networked. Producer in Sydney, Consumer in Houston.
- We are not using persistent messages. We are happy for the client to resend in the event of failure. - We are using synchronous communication where the producer does not send a new request until it has received a result from the consumer on a temp queue for the current request (not for everything, but we have one situation where we would like to support this). What im observing is that the message throughput is around 5/sec on startup. Performance here seems to be the same regardless of the message size being 1 byte or 100,000 bytes. However if I stop the consumer and then bring it back up again, the performance shoots up to anywhere between 20/sec to 100/sec. Please remember that the producer is only sending a new message after the current one has been processed successfully so there is no build up of messages that could explain a sudden boost (and the performance is sustained after bouncing). Some other observations on this: - Just starting the consumer after the producer doesn't grant the performance boost. The consumer needs to be running first, then producer, then bounce consumer. - The performance boost is also observed when the consumer is on broker b in the same location as the producer. The relative throughput numbers are much higher because their is no WAN involved but you still see the increase. Obviously we would love to work out how to get the high performance numbers all the time. My initial thought is that the network connectors are doing something I need to turn on or off that the bounce triggers? Any ideas would be much appreciated. Regards, James. http://activemq.2283324.n4.nabble.com/file/n4514510/ActiveMQ_Broker_Topology.png -- View this message in context: http://activemq.2283324.n4.nabble.com/Consumer-performance-improves-after-bounce-when-in-cluster-setup-tp4514510p4514510.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
