Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965773AbXHIPDb (ORCPT ); Thu, 9 Aug 2007 11:03:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965561AbXHIPDU (ORCPT ); Thu, 9 Aug 2007 11:03:20 -0400 Received: from mx1.redhat.com ([66.187.233.31]:47650 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965518AbXHIPDT (ORCPT ); Thu, 9 Aug 2007 11:03:19 -0400 Message-ID: <46BB2C8E.2050205@redhat.com> Date: Thu, 09 Aug 2007 11:02:38 -0400 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.12 (X11/20070719) MIME-Version: 1.0 To: Lionel Elie Mamane , Ingo Molnar , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org, linux-kernel@vger.kernel.org, miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingcha@pimp.vs19.net Subject: Re: [PATCH 00/23] per device dirty throttling -v8 References: <20070803123712.987126000@chello.nl> <20070804063217.GA25069@elte.hu> <20070804070737.GA940@elte.hu> <20070804103347.GA1956@elte.hu> <20070804163733.GA31001@elte.hu> <20070809062511.GA23435@capsaicin.mamane.lu> In-Reply-To: <20070809062511.GA23435@capsaicin.mamane.lu> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1309 Lines: 27 On 08/09/2007 02:25 AM, Lionel Elie Mamane wrote: > >> yeah, it's really ugly. But otherwise i've got no real complaint >> about ext3 - with the obligatory qualification that >> "noatime,nodiratime" in /etc/fstab is a must. This speeds up things >> very visibly (...). So for most file workloads we give Windows a >> 20%-30% performance edge, for almost nothing. > > It has been years since I used MS Windows much, but from my memories > of my these days, I was under the impression that it (at least the NT > line, the only surviving line these days) also maintained "last > accessed" times. Except I only ever saw it at "right now" because the > file explorer ... accesses the file before getting this metadata or > something like that (when you right-click on a file and ask for its > properties). It has creation and last modification time, too. > NT maintains atimes by default, at least up to XP. You have to edit the registry to turn them off, and it is a single global switch -- not per mountpoint like Unix. And it makes a huge difference there, too. - 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/