> From: Leo Donahue - PLANDEVX [mailto:leodona...@mail.maricopa.gov] > Subject: RE: Tomcat memory settings > > I have both values set to 512MB.
That's actually kind of small for this day and age, even on a 32-bit system. > Looking at the log files, the OOME appears in the logs after long > periods of time. Another indication (but not proof) that it's a memory leak in your webapp. > somewhere in between there will be a OOME message in the logs. > The webapp still works though. It's unusual that things keep working after an OOME. Try setting -XX:+HeapDumpOnOutOfMemoryError; this will produce a file that you can analyze with jhat (part of JDK6) or other tools to see just what's consuming the space. You can also use JVisualVM (again part of JDK6) to take periodic snapshots of the heap and monitor the heap usage in real-time, without significant impact on the performance of the monitored system. If you have the CPU headroom, you can also use a heap profiler to track activity; this will capture not only the objects in the heap, but also the call stacks at the time of object creation. - 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
