From owner-freebsd-hardware Sat Mar 3 0: 1: 2 2001 Delivered-To: freebsd-hardware@freebsd.org Received: from phoenix.volant.org (dickson.phoenix.volant.org [205.179.79.193]) by hub.freebsd.org (Postfix) with ESMTP id A4A7537B71B for ; Sat, 3 Mar 2001 00:00:59 -0800 (PST) (envelope-from patl@Phoenix.Volant.ORG) Received: from asimov.phoenix.volant.org ([205.179.79.65]) by phoenix.volant.org with esmtp (Exim 1.92 #8) id 14Z6yI-0001Ud-00; Sat, 3 Mar 2001 00:00:58 -0800 Received: from localhost (localhost [127.0.0.1]) by asimov.phoenix.volant.org (8.9.3+Sun/8.9.3) with SMTP id AAA15532; Sat, 3 Mar 2001 00:00:13 -0800 (PST) From: patl@Phoenix.Volant.ORG Date: Sat, 3 Mar 2001 00:00:13 -0800 (PST) Reply-To: patl@Phoenix.Volant.ORG Subject: Re: Building the Workstation of the Gods... To: "Andrew C. Hornback" Cc: Mathias HARY , hardware@freebsd.org In-Reply-To: <006b01c0a352$ee0080b0$0f00000a@eagle> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 2-Mar-01 at 12:22, Andrew C. Hornback (hornback@wireco.net) wrote: > Actually, I wanna get the machine going with all 6 of the 200s to > start off with, and work from there if 1200 MHz is too slow for a > workstation... *grins* Don't kid yourself - you won't get anywhere near the performance that you'd get from a single 1.2 GHz CPU. SMP just doesn't scale that way in practice. Unless you keep your load average above 1, you aren't likely to see performance better than a single 200 MHz CPU. You'll need a load average near 6 just to keep them all busy. (Unless I missed something and FreeBSD can allocate threads to different CPUs. But even then, it only helps for multi-threaded apps.) Overall, you'd probably be better off with a single CPU 1.2GHz Athlon. -Pat To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message