From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263752AbUGHN77 (ORCPT ); Thu, 8 Jul 2004 09:59:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263972AbUGHN77 (ORCPT ); Thu, 8 Jul 2004 09:59:59 -0400 Received: from inti.inf.utfsm.cl ([200.1.21.155]:3820 "EHLO inti.inf.utfsm.cl") by vger.kernel.org with ESMTP id S263752AbUGHN76 (ORCPT ); Thu, 8 Jul 2004 09:59:58 -0400 Message-Id: <200407081359.i68DxpLu011829@eeyore.valparaiso.cl> To: Justin Piszcz cc: linux-kernel@vger.kernel.org, justin.piszcz@mitretek.org Subject: Re: Does Optimization Effect BogoMips Value? In-Reply-To: Message from Justin Piszcz of "Wed, 07 Jul 2004 11:14:44 -0400." X-Mailer: MH-E 7.4.2; nmh 1.0.4; XEmacs 21.4 (patch 14) Date: Thu, 08 Jul 2004 09:59:50 -0400 From: Horst von Brand Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Justin Piszcz said: > Three identical Virtual Machines with three different compiler flags to > compile the entire distribution, in this case, Gentoo 2004.1. > > However, why are the Bogomips values different (up to +82 points > different)? Because the CPUs run at slightly different speeds? Because the cristals that give PCs wall clock are inaccurate (82 in 4866 is 1.6%)? -- Dr. Horst H. von Brand User #22616 counter.li.org Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513