[jboss-user] [Performance Tuning] - Identifying the thread that is eating up my CPU

Hi I need a little bit of help to get started I use jboss4.2.2 with Jboss Messaging 1.4.0 SP3 My application is eating up 100% CPU and I am trying to find out which thread is responsible for it When I run htop and I sort by CPU usage I see that my application created many threads and especially 2 of them eating up the CPU PID User PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 21997 root 16 0 2080M 1403M 129M S 100 18.3 5h35:28 /usr/lib/jvm/java-1.5.0-sun/bin/java -Dprogram.name=run.sh -server -Xms1024 -Xmx1024 -Dsun.rmi.dgc.client.gcInterval=3600000 ........... 21998 root 17 0 2080M 1403M 129M R 92.8 18.3 4h28:52 /usr/lib/jvm/java-1.5.0-sun/bin/java -Dprogram.name=run.sh -server -Xms1024 -Xmx1024 -Dsun.rmi.dgc.client.gcInterval=3600000 ........... All other threads related to this application have CPU = 0% When I run jps, I see 26596 Jps 21997 Main When I run jstack 21997 > /tmp/jstack.21997 and view jstack.21997 then I don't see any information related to PID 21998 Why is that? I am trying to get an understanding of what the thread 21998 is doing but why can't I see anything about it in the jstack dump of the process 21997 ? I would appreciate any help Thank you View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200327#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...