On Sat, 11 Sep 2004 05:59, Theodore Knab <[EMAIL PROTECTED]> wrote: > RAM is always not the answer with 32Bit machines. You can cause bounce > buffers with too much RAM. The sweet spot for Linux on a 32Bit platform > seems to be 4GB of RAM. I had 10GB of RAM in a Courier IMAP server and the > server had problems releasing swap after a week. The kernel was compiled > for 64GB of RAM. When I reduced the RAM to 4GB and recompiled for a 4GB > machine these problems disappeared.
The solution to this is to use AMD64. If you run an AMD64 kernel with 32bit user-space (should work well on Debian) then you get efficient access to >4G of RAM and the ability to run well-tested x86 binaries. If I was going to purchase hardware for a big mail store now I would only consider Opteron. The other 64bit CPUs don't offer the bang for the buck and Intel's x86_64 offering is still quite new and difficult to obtain. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/ Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
