I have recently started working with ActiveMQ (v5.9). The performance I am seeing with my producer is extremely slow and was wondering if someone could shed some light on the matter. I have my broker, producer, and consumer all running on the same machine. Furthermore, in an effort to get accurate stats, in none of my tests have I ran the producer and consumer simultaneously (i.e. I run the producer 1st and put a bunch of messages on the bus, then shut down the producer and turn on the consumer).
1K messages with default settings (producerFlowControl=true, useAsyncSend=false): Producer: 2.5 seconds Consumer: 0.16 seconds My producer puts messages on the queue one at a time using a loop in Java (calls JmsTemplate.convertAndSend). I am aware of the prefetch configuration setting for sending messages to the consumer, which by default is set to 1000 (I have also tried explicitly setting it to 1000), so that could explain some of the discrepancy here. However, when I change the prefetch setting to 0, which is supposed to do one message at a time, and at least in my mind would emulate the producer's message generation speed, the consumer slows down to ~0.56 seconds. But this is still nowhere close to the slow 2.5 seconds that the producer takes. If I change my producer/broker settings so that no ack is sent to the producer, then I can improve things significantly, but I need message reliability so probably don't want to go down this route: 1K messages with useAsyncSend=true: Producer: 0.2 seconds On a related note, does anyone know if the numbers (21-22,000 messages/second)posted the AMQ Performance Page <http://activemq.apache.org/performance.html> have useAsyncSend on or off? Thanks in advance. rostom -- View this message in context: http://activemq.2283324.n4.nabble.com/Very-slow-producer-tp4675669.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
