From owner-freebsd-hackers@FreeBSD.ORG Wed Jun 27 15:27:25 2007 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2EC4216A468; Wed, 27 Jun 2007 15:27:25 +0000 (UTC) (envelope-from cracauer@koef.zs64.net) Received: from koef.zs64.net (koef.zs64.net [212.12.50.230]) by mx1.freebsd.org (Postfix) with ESMTP id B9DD213C45D; Wed, 27 Jun 2007 15:27:24 +0000 (UTC) (envelope-from cracauer@koef.zs64.net) Received: from koef.zs64.net (koef.zs64.net [212.12.50.230]) by koef.zs64.net (8.14.1/8.14.1) with ESMTP id l5RFRNVl005378; Wed, 27 Jun 2007 17:27:23 +0200 (CEST) (envelope-from cracauer@koef.zs64.net) Received: (from cracauer@localhost) by koef.zs64.net (8.14.1/8.14.1/Submit) id l5RFRMFW005376; Wed, 27 Jun 2007 11:27:22 -0400 (EDT) (envelope-from cracauer) Date: Wed, 27 Jun 2007 11:27:22 -0400 From: Martin Cracauer To: Mike Meyer Message-ID: <20070627152722.GA5217@cons.org> References: <467EFF06.6020902@gmail.com> <20070626195031.GA29545@cons.org> <18050.25745.401646.292347@bhuda.mired.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <18050.25745.401646.292347@bhuda.mired.org> User-Agent: Mutt/1.4.2.2i Cc: freebsd-hackers@freebsd.org, Martin Cracauer , Martin Turgeon , freebsd-amd64@freebsd.org Subject: Re: Which CPUTYPE for a dualcore Xeon on AMD64 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Jun 2007 15:27:25 -0000 Mike Meyer wrote on Wed, Jun 27, 2007 at 09:22:25AM -0400: > In <20070626195031.GA29545@cons.org>, Martin Cracauer typed: > > Martin Turgeon wrote on Sun, Jun 24, 2007 at 07:32:22PM -0400: > > > Hi, > > > > > > I recently installed AMD64 6.2 Release on 2 PowerEdge servers, both with > > > dual core Xeon (3070 and 5110). > > I extensively benchmarked different compiler options on Xeon 5160 (3.0 > > GHz Core2) with gcc-4.1.2 and gcc-4.2. > > Using what benchmark? That makes a *lot* of difference. A proprietory application. I should have mentioned it does almost no floating point, so the assumption to drop sse might not be valid. However, the differences in compiler flags were generally huge and and the simpler ones came out on or near the top. Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer http://www.cons.org/cracauer/ FreeBSD - where you want to go, today. http://www.freebsd.org/