Thanks Chuck. I'll relay your feedback to our development team. To answer your question, the startup parameters are as follows;
-Xms4800m -Xmx4800m -XX:NewSize=900m -XX:MaxNewSize=900m -XX:PermSize=480m -XX:MaxPermSize=480m -XX:+UseParallelGC -XX:ParallelGCThreads=3 -XX:+UseParallelOldGC -XX:GCTimeRatio=11 -XX:+UseAdaptiveSizePolicy -XX:ReservedCodeCacheSize=96m -----Original Message----- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: 25 September 2009 14:23 To: Tomcat Users List Subject: RE: Clustering Question... > From: Darren Kukulka [mailto:darren.kuku...@connaught.plc.uk] > Subject: RE: Clustering Question... > > When OldGen becomes full, the system basically slows down to the point > of becoming non-responsive...but it does not report any OOME. Then a major GC likely is running almost continuously, which will suspend the application threads. What are your heap-related commmand line settings? If you have artificially constrained the size of the OldGen, you could easily have a self-induced problem. Setting -XX:NewRatio or any of several other options will prevent HotSpot from dynamically adjusting the balance between NewGen and OldGen. Or, you may simply be out of heap space, in which case you'll need to fix your application so that it's not so greedy. Excessive caching without employing a SoftReference technique is a frequent cause. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Connaught plc is a FTSE 250 company. We are the UK's leading provider of integrated services operating in the compliance, social housing and public sector markets. Please visit our website to see a full list of Connaught's Registered Companies www.connaught.plc.uk/group/aboutconnaught/registeredcompanies Disclaimer: The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete this message. Connaught plc, Head Office 01392 444546 --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
