From owner-freebsd-questions@FreeBSD.ORG Sat Apr 24 17:29:41 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AFDE51065670 for ; Sat, 24 Apr 2010 17:29:41 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mx1.freebsd.org (Postfix) with ESMTP id 67FF98FC13 for ; Sat, 24 Apr 2010 17:29:41 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1O5jAh-0008C1-UI for freebsd-questions@freebsd.org; Sat, 24 Apr 2010 19:29:39 +0200 Received: from pool-71-166-133-192.washdc.east.verizon.net ([71.166.133.192]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 24 Apr 2010 19:29:39 +0200 Received: from nightrecon by pool-71-166-133-192.washdc.east.verizon.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 24 Apr 2010 19:29:39 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org connect(): No such file or directory From: Michael Powell Followup-To: gmane.os.freebsd.questions Date: Sat, 24 Apr 2010 13:32:13 -0400 Lines: 27 Message-ID: References: <201004241744.47794.jmc-freebsd2@milibyte.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: pool-71-166-133-192.washdc.east.verizon.net Subject: Re: Which CPUTYPE in make.conf? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Apr 2010 17:29:41 -0000 Mike Clarke wrote: > > I have a AMD Athlon 4850e which is described as "Athlon 64 X2" > Dual-Core" processor. > > /usr/share/examples/etc/make.conf lists recognised CPU types, but which > of athlon64, athlon-mp or athlon-xp is the most appropriate for this > CPU? I've been using "athlon64" so far without any problems but I don't > know if it's the most appropriate choice or if there's even any > significant difference between them. > athlon64 is probably a good choice. I haven't looked at it in a while, and there isn't much difference. IIRC the older athlon-xp included support for 3D Now and mmx while the athlon64 adds sse and/or sse2. I think this matters more to third party ports software builds than it does the system. I thought that large pieces of the kernel were designed to not make much, if any, use the various SIMD extensions. Maybe this has changed and I'm behind the times. Your use of athlon64 seems reasonable to me. It is what I've been using. If it can be done better I'm always on the look out for better. -Mike