Hi Joachim, Actually, I don't have the caching service active. (I don't have a ejb3-caching-service.xml (or whatever it is)) in my deploy directory. I am willing to buy that GC might be slamming the CPU, but the used ram is always around 500MB, and I've allocated 2.25 GB of ram. Is there something that I'm missing? Perhaps the cache IS on even without the deployment file? Thanks, JLS View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3973068#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...