Thanks Miguel, This is what I also suspect, but I can't see any evidence. The server has gone 10 days under heavy loads without a glitch and then it will hang a couple of times in the next few days with no apparent rhyme or reason.
Z. On 3/02/13 5:56 AM, "Miguel González Castaños" <miguel_3_gonza...@yahoo.es> wrote: >On 01/02/2013 20:08, Christopher Schultz wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> Zoran, >> >> On 1/31/13 8:36 PM, Zoran Avtarovski wrote: >>> We have a application running on the latest Tomcat7 and we are >>> getting a server crash or becoming unresponsive. This occur every >>> few days at no fixed intervals or time of day and they certainly >>> don't correlate to any app function at least not according to the >>> logs. >> Can you describe the "crash" in more detail? OOME? IF so, what kind >> (heap or PermGen)? Lock-up (deadlock, etc)? Actual JVM crash (produces >> a core dump or native stack dump)? >I would go in that direction too. Enable logs and core or stack dumps >and analyze them. Be sure you are not restarting Tomcat in your crontab >(i had a server which was restarted once a week and masked some memory >starvation). > >In my case I can tell you I had to end up disabling JaveMelody (it was >provoking some side effects in our webapp as not managing international >chars in the right way). If reports from Javamelody are not giving you >any clue, beware that Javamelody has its own memory overhead (not much >in your case but in my case it was around 200 Mb of heap in a 1 Gb >virtual server). > >I followed Chris directions, I got stack dumps after a server crash and >analyzed it with eclipse analyzer. I realized our programmer decided to >load too many objects in memory than the server could cope with. So no >memory leak but bad memory management was the root cause. > >Regards, > >Miguel > > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
