From owner-freebsd-smp Fri Nov 5 15: 5:33 1999 Delivered-To: freebsd-smp@freebsd.org Received: from dingo.cdrom.com (dingo.cdrom.com [204.216.28.145]) by hub.freebsd.org (Postfix) with ESMTP id 2E3CD14E58 for ; Fri, 5 Nov 1999 15:05:27 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost.cdrom.com [127.0.0.1]) by dingo.cdrom.com (8.9.3/8.8.8) with ESMTP id OAA00440 for ; Fri, 5 Nov 1999 14:56:16 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Message-Id: <199911052256.OAA00440@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: freebsd-smp@FreeBSD.ORG Subject: Re: Dual Celeron + FreeBSD? In-reply-to: Your message of "Fri, 05 Nov 1999 20:26:28 +0100." <199911051926.UAA06749@dorifer.heim3.tu-clausthal.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Date: Fri, 05 Nov 1999 14:56:15 -0800 From: Mike Smith Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Adam Strohl wrote in list.freebsd-smp: > > I Agree totaly with this, disk is THE choke point for make world for= my > > SMP system, must ... resist .. urge ... to ... buy ... SCSI ... hard= ware. > > :) > = > No no... Buy more RAM! :-) > = > Then put /usr/src on an MFS, and enable Soft-updates on > /usr/obj (it doesn't matter much if that's IDE or SCSI, > but it should use UDMA if it's IDE). > = > Then you can do a make buildworld in less than 40 minutes > on an SMP machine. I had the great pleasure to try that > once. :) Under 40 minutes is very hard on a current intel architecture box; the = 4-way Xeon 400/256 that we have here will do about 39 even on -current = as of a couple of weeks ago, with everything except $DESTDIR on an MFS. To go much faster will require more memory bandwidth, or possibly = faster CPUs with more cache (not so sure about that part). -- = \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message