quick way how to look what the thread consuming CPU is doing is to do thread dump (e.g. using jstack $PID) and use top with threads on (H option) and then look up, see e.g. http://code.nomad-labs.com/2010/11/18/identifying-which-java-thread-is- consuming-most-cpu/
On Wednesday 01 August 2012 09:25:08 Andrew Melo wrote: > On Tue, Jul 31, 2012 at 2:54 PM, Les Mikesell <lesmikes...@gmail.com> wrote: > > On Tue, Jul 31, 2012 at 2:38 PM, Andrew Melo <andrew.m...@gmail.com> wrote: > >>> But if it happened before June 30th or the system has been rebooted > >>> since, this is not the problem. > >> > >> Well, and it's only when i'm using the web interface (or if background > >> stuff is happening) > > > > It affects the linux futex() system call that is used mostly in > > threaded applications (so you see it in java). And I think it is > > sort of a race condition where the extra CPU use happens at random. > > Well, I restarted it and reset the date and it didn't seem to help. > I'm pretty helpless when it comes to java, but is there some sort of > way I can attach a profiler to the process and see what it spins on? > > Thanks > > > -- > > > > Les Mikesell > > > > lesmikes...@gmail.com
