From owner-freebsd-stable@FreeBSD.ORG  Sat Jul 23 12:17:32 2005
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2D97116A41F
	for <freebsd-stable@freebsd.org>; Sat, 23 Jul 2005 12:17:32 +0000 (GMT)
	(envelope-from petefrench@ticketswitch.com)
Received: from mail.ticketswitch.com (mail.ticketswitch.com [194.200.93.188])
	by mx1.FreeBSD.org (Postfix) with ESMTP id D09E443D46
	for <freebsd-stable@freebsd.org>; Sat, 23 Jul 2005 12:17:31 +0000 (GMT)
	(envelope-from petefrench@ticketswitch.com)
Received: from [172.16.1.6] (helo=dilbert.firstcallgroup.co.uk)
	by mail.ticketswitch.com with esmtp (Exim 4.50 (FreeBSD))
	id 1DwIwV-0001b3-0g; Sat, 23 Jul 2005 13:17:23 +0100
Received: from petefrench by dilbert.firstcallgroup.co.uk with local (Exim
	4.50 (FreeBSD)) id 1DwIwU-0004Io-Su; Sat, 23 Jul 2005 13:17:22 +0100
To: bfoz@bfoz.net, freebsd-stable@freebsd.org
In-Reply-To: <42E151B4.7030500@bfoz.net>
Message-Id: <E1DwIwU-0004Io-Su@dilbert.firstcallgroup.co.uk>
From: Pete French <petefrench@ticketswitch.com>
Date: Sat, 23 Jul 2005 13:17:22 +0100
Cc: 
Subject: Re: SMP support maturity? AMD64x2 or FX-57?
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 23 Jul 2005 12:17:32 -0000

> if I should go with dual procs or just a single. The AMD64x2 is
> slightly cheaper than the FX-57 so I'm leaning that way, but it
> would be a rather pointless savings if SMP isn't well supported.

Well, I've not triied it under amd64, but i386 SMP has been rock stable
for me since I upgraded to 5.X, on both nyperthreaded machines and genuine
SMP machines.

Choosing one or two cores is, however, more a matter of what the box is
going to be doing - if you are usually running one big compute job
then a single faster core is better than two smaller ones.

> So, is SMP in -STABLE ready for primetime? Can it really make use of two processors?

Yes and yes.

-pcf.