HI, Have a look at the memory settings in the run.conf file and also monitor the Garbage collections. This will give you some starting point as to what needs to be tuned. Search the forum for Performance tunning or heap settings and you will find some tips on how to tune the server properly. I am currently also in a process of tunning a Jboss server running in a clustered mode with 24G RAM. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4235868#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...