Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 23 Mar 2003 18:56:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 23 Mar 2003 18:56:10 -0500 Received: from smtp08.iddeo.es ([62.81.186.18]:4345 "EHLO smtp08.retemail.es") by vger.kernel.org with ESMTP id ; Sun, 23 Mar 2003 18:56:09 -0500 Date: Mon, 24 Mar 2003 01:07:13 +0100 From: "J.A. Magallon" To: "Martin J. Bligh" Cc: Jeff Garzik , James Bourne , linux-kernel@vger.kernel.org, Robert Love , Martin Mares , Alan Cox , Stephan von Krawczynski , szepe@pinerecords.com, arjanv@redhat.com, Pavel Machek Subject: Re: Ptrace hole / Linux 2.2.25 Message-ID: <20030324000713.GA17795@werewolf.able.es> References: <20030323195606.GA15904@atrey.karlin.mff.cuni.cz> <1048450211.1486.19.camel@phantasy.awol.org> <402760000.1048451441@[10.10.2.4]> <20030323203628.GA16025@atrey.karlin.mff.cuni.cz> <920000.1048456387@[10.10.2.4]> <3E7E335C.2050509@pobox.com> <1240000.1048460079@[10.10.2.4]> <3E7E4486.8080302@pobox.com> <6850000.1048463137@[10.10.2.4]> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: 7BIT In-Reply-To: <6850000.1048463137@[10.10.2.4]>; from mbligh@aracnet.com on Mon, Mar 24, 2003 at 00:45:38 +0100 X-Mailer: Balsa 2.0.9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1980 Lines: 40 On 03.24, Martin J. Bligh wrote: > >> O(1) sched may be a bad example ... how about the fact that mainline VM > >> is totally unstable? Witness, for instance, the buffer_head stuff. Fixes > >> for that have been around for ages. > > > > "totally unstable" being defined as: My computers don't crash, and my > > 100%-mainline test kernels pass various Cerberus/LTP/crashme runs. > > > > Of course, I am not totally focused on multi-million-dollar computers, so > > maybe my perspective is skewed... ;-) > > Last time I checked, a 2x machine with 4Gb of RAM didn't cost millions of > dollars ;-) > > > Fixes should be applied to 2.4-mainline, certainly. Anything else just > > wastes developer brain cycles and slows the move to 2.6. > > Common vendor _features_ is maybe better done in a separate tree, I'd > accept ... I'm just frustrated with the current lack of commonality between > distros, I guess. > You will never get distros to follow that. A 'featured-kernel-for-distro'... Just take RH and SuSE (correct me if I'm wrong...) RH ships -ac. SuSE ships -aa. At least both (-ac and -aa) have O(1) scheduler now. -ac ships rmap, -aa ships -aa (;)). That means O(1) goes in your kernel, but how about the VM subsystem ? But now that -ac does not include rmap, perhaps the VM can be chosen as the one from Andrea... (BTW, I have been runnin plan -pres for a couple of weeks, and now that I run -aa again, my computer looks like a new one...) -- J.A. Magallon \ Software is like sex: werewolf.able.es \ It's better when it's free Mandrake Linux release 9.1 (Bamboo) for i586 Linux 2.4.21-pre5-jam1 (gcc 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) - 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/