From owner-freebsd-questions@FreeBSD.ORG Tue Jan 27 09:13:07 2004 Return-Path: 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 EE3C616A4CE for ; Tue, 27 Jan 2004 09:13:07 -0800 (PST) Received: from anggerik.meltech.net.my (anggerik.meltech.net.my [202.71.100.92]) by mx1.FreeBSD.org (Postfix) with ESMTP id D714043D69 for ; Tue, 27 Jan 2004 09:12:45 -0800 (PST) (envelope-from freebsd@synthexp.net) Received: from synthexp.net (bakawali.meltech.net.my [219.93.73.214]) by anggerik.meltech.net.my (Postfix) with ESMTP id 422D22069 for ; Wed, 28 Jan 2004 01:06:46 +0000 (GMT) Message-ID: <40169BA2.8080506@synthexp.net> Date: Wed, 28 Jan 2004 01:10:58 +0800 From: Ihsan Junaidi User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6b) Gecko/20031205 Thunderbird/0.4 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@FreeBSD.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: Migrating 5.2 from Pentium 4 to Athlon MP X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Jan 2004 17:13:08 -0000 Hello all, I have a server currently running on a Pentium 4 box. Yesterday I bought an AMD 762 MPX chipset to go with two Athlon MP 2000+. The production server is running FreeBSD 5.2, a GENERIC with additional SCSI/RAID controllers trimmed off. The kernel and all of the userland + ports were built with -march=p4 flags and I am wondering if there's any way I can just plug the disk into the Athlon box without rebuilding everything with the exception of the world+kernel. FYI, the kernel is SMP-aware. How does the -march flag effect the userland programs? I am aware that only OpenSSL is capable of taking advantage of specific CPU instructions but other than that? Thank you for your time, Ihsan