> From: Li,Henry [mailto:henr...@mdanderson.org] > Subject: what is the upper limit of maximum heap memory for Tomcat > with32-bit JVM running on Red Hat Linux 4 (32-bit) > > My Tomcat is running on 32-bit Red Hat 4 (2.6.9-78.0.1.ELsmp), host > server has 8G physical memory and 4 processors.
The amount of RAM is not pertinent to the maximum heap size; the latter is limited by whatever virtual (not real) space the OS allows for a process. For Linux, that's either 2 or 3 GB, but lots of things have to fit in there besides the JVM's heap. > java version "1.4.2" gcj (GCC) 3.4.6 20060404 (Red Hat 3.4.6-10) Dump that JVM - you'll need a real one to do any real work. Use a Sun JDK or OpenJDK, latest version. They're both much more stable than gcj, and much, much faster. > The maximum # I can reach is -Xmx2680M. Then your 32-bit Linux is allowing a process space of 3 GB. - 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
