anonymous wrote : is it better performance, because some services are deactivated, or is it just lower memory consumption, because some jar files are not loaded? | It depends on which service you deactivate. The "default" profile is the most commonly used. However, if you want to slim down some services which are not required in your application, then you usually create a copy of the default folder and start removing the services. See the http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossASTuningSliming especially the Slimming section for more details. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4136675#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...