Thank you Chuck! I will go to the 64-bit. Regards, Henry
-----Original Message----- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Thursday, July 23, 2009 7:19 PM To: Tomcat Users List Subject: RE: what is the upper limit of maximum heap memory for Tomcat with 32-bit JVM running on Red Hat Linux 4 (32-bit) > From: Alan Chaney [mailto:a...@compulsivecreative.com] > Subject: Re: what is the upper limit of maximum heap memory for Tomcat > with 32-bit JVM running on Red Hat Linux 4 (32-bit) > > You are using a 32 bit operating system and a 32 bit processor. > To make more than 4GB of ram available you must ensure that you > have PAE support enabled in your kernel That's not relevant to the problem. PAE allows the OS to utilize more real memory; it does not change the virtual memory available to a process, which is the limitation here. > Even so, I cannot find any clear statement on the web that the > 32 bit JRE will be able to address more than 4G even if you do > have PAE enabled. I suspect not. You are correct - enabling PAE would have no effect. > 2. Your other 'workaround' is to install a 64 bit OS and a 64 bit JVM. > Then you can have 7G+ for the JVM. Much preferred, if the hardware supports it. - 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 --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
