From owner-freebsd-amd64@FreeBSD.ORG Sat May 29 10:25:03 2010 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 80958106567B for ; Sat, 29 May 2010 10:25:03 +0000 (UTC) (envelope-from petefrench@ticketswitch.com) Received: from constantine.ticketswitch.com (constantine.ticketswitch.com [IPv6:2002:57e0:1d4e:1::3]) by mx1.freebsd.org (Postfix) with ESMTP id 46D128FC16 for ; Sat, 29 May 2010 10:25:03 +0000 (UTC) Received: from dilbert.rattatosk ([10.64.50.6] helo=dilbert.ticketswitch.com) by constantine.ticketswitch.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69 (FreeBSD)) (envelope-from ) id 1OIJDi-000LF9-Fa; Sat, 29 May 2010 11:24:46 +0100 Received: from petefrench by dilbert.ticketswitch.com with local (Exim 4.71 (FreeBSD)) (envelope-from ) id 1OIJDi-000DGf-Ej; Sat, 29 May 2010 11:24:46 +0100 Date: Sat, 29 May 2010 11:24:46 +0100 Message-Id: To: fbsdmail@dnswatch.com, freebsd-amd64@freebsd.org In-Reply-To: From: Pete French Cc: Subject: Re: CPUTYPE??? X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 May 2010 10:25:03 -0000 > Seems "athlon-mp" is the best choice. After building some ports, > I noticed some of them returned the string: MCPUTYPE=athlon-mp > So unless anyone would care to suggest a better choice, I'm going > to use CPUTYPE?=athlon-mp :) A better option would be to switch to 64 bit and then stop worrying about the CPUTYPE :-) Those AMD processors work very nicely in 64 bit mode. It has to be said that actually on a modern processor I will doubt you will notice much (if any) difference tweaking the CPU type. When I first came to FreeBSD I used to obessively tweak optimisation settings all over the place. These days I leave more or less everything at the defalts, and life is perfectly happy... certainly given the CPU you ar switching to, I would just not bother setting CPUTYPE. try it "as-is", and if i is too slow then start looking for optimisations. -pete.