Yes, you are right, Sysinternal ProceXp displays the real working set that reaches 900MB Thank you ! View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227135#4227135 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4227135