Ive come across what i think may be a bug in JBM 2. If you run the perf sender and set the message size to 64k, the producer stops sending after 32000 messages, if the message size is 32k it stops sending after 64000 messages, and so forth. So basically it looks like it stops working after 20M of messages. Can any of you guys reproduce this problem, if you can i'll raise a JIRA. NB pinging needs to be disabled to send lge messages. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165478#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...