I'll take a look. My bet is that the lazy generation of classes is affecting your test performance. The default instrumentation mode generates classes only when the affected joinpoint are executed for the first time. On the other hand, the classical instrumentation does not generate any classes in this moment... everything is generated during aopc execution solely. I'll let you know when I have a better answer. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4143261#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...