From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937317AbXG0MbA (ORCPT ); Fri, 27 Jul 2007 08:31:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934806AbXG0Mav (ORCPT ); Fri, 27 Jul 2007 08:30:51 -0400 Received: from smtpq1.tilbu1.nb.home.nl ([213.51.146.200]:42180 "EHLO smtpq1.tilbu1.nb.home.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934525AbXG0Mau (ORCPT ); Fri, 27 Jul 2007 08:30:50 -0400 Message-ID: <46A9E4FC.80403@gmail.com> Date: Fri, 27 Jul 2007 14:28:44 +0200 From: Rene Herman User-Agent: Thunderbird 2.0.0.5 (X11/20070716) MIME-Version: 1.0 To: Mike Galbraith CC: Jesper Juhl , Andika Triwidada , Robert Deaton , linux-kernel@vger.kernel.org, ck list , linux-mm@kvack.org, B.Steinbrink@gmx.de, Andrew Morton Subject: Re: updatedb References: <367a23780707250830i20a04a60n690e8da5630d39a9@mail.gmail.com> <46A773EA.5030103@gmail.com> <46A81C39.4050009@gmail.com> <7e0bae390707252323k2552c701x5673c55ff2cf119e@mail.gmail.com> <9a8748490707261746p638e4a98p3cdb7d9912af068a@mail.gmail.com> <46A98A14.3040300@gmail.com> <1185522844.6295.64.camel@Homer.simpson.net> <46A9ACB2.9030302@gmail.com> <1185528368.7851.44.camel@Homer.simpson.net> <46A9D26E.9010703@gmail.com> <1185536880.8978.34.camel@Homer.simpson.net> In-Reply-To: <1185536880.8978.34.camel@Homer.simpson.net> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-AtHome-MailScanner-Information: Please contact support@home.nl for more information X-AtHome-MailScanner: Found to be clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 07/27/2007 01:48 PM, Mike Galbraith wrote: > physical ram. If it really does use only free ram, that indeed sounds > pretty pointless. Con's quote from a bit below that seems to confirm the "only free" nicely. > I believe the users who say their apps really do get paged back in > though, so suspect that's not the case. Stopping the bush-circumference beating, I do not. -ck (and gentoo) have this massive Calimero thing going among their users where people are much less interested in technology than in how the nasty big kernel meanies are keeping them down (*). Nick Piggin has been unable to get anyone to substantiate anything it seems and even this thread alone (and I privately) received a few "oh, heh, sorry, I don't actually have a friggin' clue what I'm talking about" responses. As such, I believe it's fairly safe to dump the updatedb thing in the garbage as not a practical problem. Leaves the issue of for example a midnight backup run that could very well itself grow large enough to leave massive amounts of free memory at exit which swap-prefetch _would_ help with. I haven't much opinion on how important such situations are but trying to do something to help those seems sensible in itself. Rene. (*) which isn't to say that you guys aren't in fact nasty big kernel meanies ofcourse.