Hi Peter, Thank you very much. I have question right away: anonymous wrote : Another thing you could do - when this slowdown hits, take a JVM thread dump and look at which threads are running and what they are doing. How do I take a thread dump? I tried kill -SIGQUIT pid but that didn't do anything. I'll check out your slide now. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4173183#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...