Hi, I have a problem with the gc performance in production. The enviroment is the next: Linux Red Hat 9.0 biprocessors 2 Gigas of memory Jboss 3.2.3
I am using these parameters: -Xmx1536m -Xms512m -Xss1024k -XX:NewSize=96m -XX:MaxNewSize=256m (igual que NewSize) -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:ParallelGCThreads=2 About 19:00-20:00 pm are the hours with more users but depend of the day at 22:00 pm or 1:00 am or 18:30 pm... It doesnÂt happen at the same hour and It doesnÂt happen daily, the system begins to answer slowly and finally we have to restart jboss. Looking de gc log with the tool "hpjtune", we can see that there are a lot of calls of gc (scavenge and full gc) and there are an increasing heap size with each gc. The system calls to old gc and after a a old gc, the head size drops to a much lower level, but the level of heap size is getting bigger and finally all gc are only old gc. There are not any scavenge gc. Finally we have to restart jboss when the heap size is about 700M. If there is not any problem, the graphic shows a scavenge gc and full gc (50% each one), not old gc, and the maximum level of heap size is 200M, and when the users are not using the system, the level of heap size is 50M. Could anybody help me? Thanks in advance[/img] View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3867786#3867786 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3867786 ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
