Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261388AbVBOAR0 (ORCPT ); Mon, 14 Feb 2005 19:17:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261391AbVBOAR0 (ORCPT ); Mon, 14 Feb 2005 19:17:26 -0500 Received: from mail8.fw-bc.sony.com ([160.33.98.75]:38348 "EHLO mail8.fw-bc.sony.com") by vger.kernel.org with ESMTP id S261388AbVBOARV (ORCPT ); Mon, 14 Feb 2005 19:17:21 -0500 Message-ID: <42113F6B.1080602@am.sony.com> Date: Mon, 14 Feb 2005 16:16:43 -0800 From: Tim Bird User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lee Revell CC: Roland Dreier , Prakash Punnoor , Paolo Ciarrocchi , Greg KH , Patrick McFarland , linux-hotplug-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [OT] speeding boot process (was Re: [ANNOUNCE] hotplug-ng 001 release) References: <20050211004033.GA26624@suse.de> <420C054B.1070502@downeast.net> <20050211011609.GA27176@suse.de> <1108354011.25912.43.camel@krustophenia.net> <4d8e3fd305021400323fa01fff@mail.gmail.com> <42106685.40307@arcor.de> <1108422240.28902.11.camel@krustophenia.net> <524qge20e2.fsf@topspin.com> <1108424720.32293.8.camel@krustophenia.net> In-Reply-To: <1108424720.32293.8.camel@krustophenia.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1136 Lines: 27 Lee Revell wrote: > But, I was referring more to things like GDM not being started until all > the other init scripts are done. Why not start it first, and let the > network initialize while the user is logging in? There are a number of techniques used by CE vendors to get fast bootup time. Some CE products boot Linux in under 1 second. Sony's best Linux boot time in the lab (from power on to user space) was 148 milliseconds, on an ARM chip (running at 200 MHZ I believe). Every product I know of that boots in under 1 second does it by completely eliminating RC scripts, and using a custom init program. For anyone interested, CELF has some resources on this topic at: http://tree.celinuxforum.org/CelfPubWiki/BootupTimeResources ============================= Tim Bird Architecture Group Chair, CE Linux Forum Senior Staff Engineer, Sony Electronics ============================= - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/