From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261663AbVGZJW3 (ORCPT ); Tue, 26 Jul 2005 05:22:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261665AbVGZJW3 (ORCPT ); Tue, 26 Jul 2005 05:22:29 -0400 Received: from emailhub.stusta.mhn.de ([141.84.69.5]:7441 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S261663AbVGZJW0 (ORCPT ); Tue, 26 Jul 2005 05:22:26 -0400 Date: Tue, 26 Jul 2005 11:22:15 +0200 From: Adrian Bunk To: Al Boldi Cc: "'Horst von Brand'" , linux-kernel@vger.kernel.org Subject: Re: kernel optimization Message-ID: <20050726092215.GJ3160@stusta.de> References: <200507231849.j6NInMPO003728@laptop11.inf.utfsm.cl> <200507260524.IAA06931@raad.intranet> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200507260524.IAA06931@raad.intranet> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 26, 2005 at 08:22:59AM +0300, Al Boldi wrote: > Dr. Horst H. von Brand wrote: { > Al Boldi wrote: > > Adrian Bunk wrote: { > > On Fri, Jul 22, 2005 at 07:55:48PM +0100, christos gentsis wrote: > > > i would like to ask if it possible to change the optimization of the > > > kernel from -O2 to -O3 :D, how can i do that? if i change it to the > > > top level Makefile does it change to all the Makefiles? > > And since it's larger, it's also slower. > > } > > > It's faster but it's flawed. Root-NFS boot failed! > > How do you know that it is faster if it is busted? > } > > The -O3 compile produces a faster kernel, which seems to work perfectly, > albeit the Root-NFS boot flaw! How did you measure that you that your -O3 kernel isn't slower? > Al cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed