Date: Mon, 7 Feb 2005 11:17:34 -0600 (CST) From: Chris Dillon <cdillon@wolves.k12.mo.us> To: Scott Long <scottl@freebsd.org> Cc: Nathan Vidican <nvidican@wmptl.com> Subject: Re: Intel EMT64 Xeon vs AMD Opteron Message-ID: <20050207111200.G36249@duey.wolves.k12.mo.us> In-Reply-To: <42044B92.4040102@freebsd.org> References: <000001c50a3c$50f2eba0$6800000a@r3140ca> <20050204103708.21608.qmail@web26801.mail.ukl.yahoo.com> <2fd864e05020419434705bf70@mail.gmail.com> <42044B92.4040102@freebsd.org>
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On Fri, 4 Feb 2005, Scott Long wrote: > With FreeBSD, it's a bit of a toss-up. There is no strong affinity > set or enforced between process memory and where the process is > running. Having some notion of affinity (i.e. NUMA support) would be > a good thing. Oh, and the 4+2 configurations are typically pretty > poor, regardless. For non-NUMA-aware operating systems, you should turn on Node Interleaving for the memory system which will spread the memory accesses across all processors. Hopefully all multi-processor Opteron system BIOSes will give you this option, my Tyan S2885 does. -- Chris Dillon - cdillon(at)wolves.k12.mo.us FreeBSD: The fastest, most open, and most stable OS on the planet - Available for IA32, IA64, AMD64, PC98, Alpha, and UltraSPARC architectures - PowerPC, ARM, MIPS, and S/390 under development - http://www.freebsd.org Q: Because it reverses the logical flow of conversation. A: Why is putting a reply at the top of the message frowned upon?
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