You know the jboss profiler will sleep until you send a wake-up signal. The wake-up and stop signal can be sent by a kill -3 command on UNIX. I just want to know the reson for this, why I send kill -3 pid, the profiler will wake up. Why not kill -4. Whre the kill -3 signal are captured? In Jboss Inspector? or JVM? And If I want to pause the profiling,which signal should I send? Can anyone give me an answer , or the detail process of kill -3 signal. Thank you very much! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055882#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...