-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bob Sanders wrote:
>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. I was more curious how the "virtual" CPUs would affect things. And if there was a limit on the number of processes supported by gentoo. I knew that the linux kernel (generically) supports well over 8 CPUs, but I just was trying to nail down any distro-specific issues. > >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. I'm getting this box from a vendor, and I thought they had limited options. We've always gone Intel before, and I'm relatively new to this organization. I'm going to poke around for some benchmarks. I would be interested in seeing them, both from the perspective of my home P4/HT box, as well as this one. > >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 >- - -- gentux echo "hfouvyAdpy/ofu" | perl -pe 's/(.)/chr(ord($1)-1)/ge' gentux's gpg fingerprint ==> 34CE 2E97 40C7 EF6E EC40 9795 2D81 924A 6996 0993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) iD8DBQFD6qiNLYGSSmmWCZMRAj+9AJ4wUtyNQ2j5M7VyTfm60hG+g2FQdgCdGgKw B8H/GyixTImDLAqT89irnD8= =hRdS -----END PGP SIGNATURE----- -- gentoo-user@gentoo.org mailing list
