From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264622AbUEUXxd (ORCPT ); Fri, 21 May 2004 19:53:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264488AbUEUXww (ORCPT ); Fri, 21 May 2004 19:52:52 -0400 Received: from imap.gmx.net ([213.165.64.20]:9878 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S264857AbUEUXiD (ORCPT ); Fri, 21 May 2004 19:38:03 -0400 X-Authenticated: #4512188 Message-ID: <40ACE1AC.3000803@gmx.de> Date: Thu, 20 May 2004 18:49:48 +0200 From: "Prakash K. Cheemplavam" User-Agent: Mozilla Thunderbird 0.6 (X11/20040504) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Valdis.Kletnieks@vt.edu CC: john weber , linux-kernel@vger.kernel.org Subject: Re: Performance Tuning References: <20040520120514.GA29540@sixbit.org> <200405201642.i4KGgDgJ000683@turing-police.cc.vt.edu> In-Reply-To: <200405201642.i4KGgDgJ000683@turing-police.cc.vt.edu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Valdis.Kletnieks@vt.edu wrote: > On Thu, 20 May 2004 12:05:15 -0000, john weber said: > > >>Kernel compiles take 6m38s on my P4 2.8GHz (with HT enabled) and >>512 MB RAM as compared to 20-30 seconds reported by folks online. >>I am running kernel 2.6.6. [snip] > Seriously - the only way to do a kernel build in 20 seconds is to use 'make > -j20' or so, and have enough processors to handle it, and enough RAM so that > you can basically do the whole thing in the fin-core cache rather than beating > on the disk.... 20sec sounds very far from reality for me. I have athlon xp@2.2GHz and with gcc3.4 it takes about 4min to compile a 2.6.6-mm kernel. Using gcc3.3.x it needs minutes more. Prakash