From owner-freebsd-questions Tue Aug 20 15:27:28 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4F5D237B400 for ; Tue, 20 Aug 2002 15:27:26 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id C3CDD43E4A for ; Tue, 20 Aug 2002 15:27:25 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.5/8.12.5) id g7KMRPcX011758; Tue, 20 Aug 2002 17:27:25 -0500 (CDT) (envelope-from dan) Date: Tue, 20 Aug 2002 17:27:25 -0500 From: Dan Nelson To: Lord Raiden Cc: FreeBSD Questions Subject: Re: Freebsd and multi-cpu systems Message-ID: <20020820222725.GE70340@dan.emsphone.com> References: <4.2.0.58.20020820182847.00a02280@192.168.0.25> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4.2.0.58.20020820182847.00a02280@192.168.0.25> X-OS: FreeBSD 5.0-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.1i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In the last episode (Aug 20), Lord Raiden said: > Hi all. Just wondering about something. I had someone today who > mentioned to me about doing a Freebsd server with dual P3's and a huge raid > array. The raid I'm cool with. The Dual P3's I'm not. I know that > there's something special that goes into making Freebsd work correctly on a > multi-cpu system and make it work correctly. > > Can anyone tell me how to do this or point me towards a faq on how > this is done? Thanks. I'm sure it involves some kernel hacking and > recompiling, so I'm game for that if need be. Just add options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O to your kernel and rebuild. The resulting kernel will only boot on SMP hardware, though, so don't try and boot it on a regular desktop. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message