From owner-freebsd-questions Fri Nov 6 22:25:47 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA01056 for freebsd-questions-outgoing; Fri, 6 Nov 1998 22:25:47 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from jason03.u.washington.edu (jason03.u.washington.edu [140.142.77.10]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA01049 for ; Fri, 6 Nov 1998 22:25:43 -0800 (PST) (envelope-from jcwells@u.washington.edu) Received: from saul3.u.washington.edu (root@saul3.u.washington.edu [140.142.83.1]) by jason03.u.washington.edu (8.8.4+UW97.07/8.8.4+UW98.06) with ESMTP id WAA35084; Fri, 6 Nov 1998 22:25:31 -0800 Received: from S8-37-26.student.washington.edu (S8-37-26.student.washington.edu [128.208.37.26]) by saul3.u.washington.edu (8.8.4+UW97.07/8.8.4+UW98.06) with ESMTP id WAA21289; Fri, 6 Nov 1998 22:25:30 -0800 (PST) Date: Fri, 6 Nov 1998 22:25:13 -0800 (PST) From: "Jason C. Wells" X-Sender: jason@s8-37-26.student.washington.edu Reply-To: "Jason C. Wells" To: Morris Allen cc: freebsd-questions@FreeBSD.ORG Subject: Re: your mail In-Reply-To: <000c01be0a03$53f99dc0$c97391d0@moe-rc.vidnet.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, 6 Nov 1998, Morris Allen wrote: >I am an old Multi Processor Bay Mainframer, but now a technical >engineer. My question. Say in Freebsd 3.0.. from a processor side.. >Would I get more performance out of using two 333 or 350 Mhz dual >processors on a dual processor motherboard or just jump to the 450 Mhz >Intel processor. I believe, at least from my old job, when processor >utilization time is at a peek, the dual would perform better, (More MIPS >or task) than the faster single processor. Please share you thoughts >with me. I am prepairing to build a monster mail machine.. with freebsd >3.0. thanks Morris Allen You would get more from the dual set up according to some graphics that are on our site somewhere. According to those numbers, the overhead for SMP is about 10 percent. Using cycles/sec as a _gross_ indicator you would get 700-70 Mhz worth of CPU in the dual cpu config. Catchya Later, | UW Mechanical Engineering Jason Wells | http://weber.u.washington.edu/~jcwells/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message