Hello Ron, I've measured latency of calls going to SLSB in JBoss with "default" & "all" configuration. The difference is terrible. I'm not aware what can cause this performance bottleneck in these two configurations so far. (have not invested much time in it, thought I got some reply from your end as I've not designed JBoss.) Vinay View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243149#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...