On Wed, 08 Feb 2006 15:52:01 -0800 gentuxx <[EMAIL PROTECTED]> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi all, > > Just wondering if anyone here has any experience with gentoo on a 4/8 > CPU server. I've been running it for years on a 4P PIII Xeon and my take is I won't run more than 2 Intel processors on their Front Side Bus - The bus saturates very quickly. The cpus stall out waiting for memory. If you are going to run more than 2 cpus, go for an Opteron solution. It scales much better and the dual-core limits the FSB to 2 cpus per connect. Also, if you look around at places like - 2cpu.com, you'll see at 4 cpus, the Opteron's massive memory bandwidth leaves the Xeon way behind on most benchmarks. Finally, outside of very, very specific tasks, Intel's HT actually slows down performance. Again check the web sites for specific benchmarks. If your application doesn't fall into the use area where HT actually helps, it's best to turn it off. As to Linux scaling, I've run Linux, not Gentoo, on a few different 8P, 16P, 20P, 32P, and 64P systems, and on one 512P system. The 512P was kind of fun - kicking off and stopping 512 setiathome instances, all at the same time. Bob - -- [email protected] mailing list
