Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030561AbWHIGkD (ORCPT ); Wed, 9 Aug 2006 02:40:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030557AbWHIGkD (ORCPT ); Wed, 9 Aug 2006 02:40:03 -0400 Received: from mga05.intel.com ([192.55.52.89]:32094 "EHLO fmsmga101.fm.intel.com") by vger.kernel.org with ESMTP id S1030518AbWHIGkA (ORCPT ); Wed, 9 Aug 2006 02:40:00 -0400 X-ExtLoop1: 1 X-IronPort-AV: i="4.07,223,1151910000"; d="scan'208"; a="113828407:sNHT19204773" Date: Tue, 8 Aug 2006 23:39:49 -0700 From: Valerie Henson To: Matthew Wilcox Cc: dean gaudet , David Lang , Mark Fasheh , Chris Wedgwood , Arjan van de Ven , Dave Kleikamp , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Akkana Peck , Jesse Barnes , jsipek@cs.sunysb.edu, Al Viro Subject: Re: [RFC] [PATCH] Relative lazy atime Message-ID: <20060809063947.GA13474@goober> References: <20060803063622.GB8631@goober> <20060805122537.GA23239@lst.de> <1154797123.12108.6.camel@kleikamp.austin.ibm.com> <1154797475.3054.79.camel@laptopd505.fenrus.org> <20060805183609.GA7564@tuatara.stupidest.org> <20060805222247.GQ29686@ca-server1.us.oracle.com> <20060806030147.GG4379@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060806030147.GG4379@parisc-linux.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 930 Lines: 22 On Sat, Aug 05, 2006 at 09:01:47PM -0600, Matthew Wilcox wrote: > On Sat, Aug 05, 2006 at 04:28:29PM -0700, dean gaudet wrote: > > you can work around mutt's silly dependancy on atime by configuring it > > with --enable-buffy-size. so far mutt is the only program i've discovered > > which cares about atime. > > For the shell, atime is the difference between 'you have mail' and 'you > have new mail'. > > I still don't understand though, how much does this really buy us over > nodiratime? Lazy atime buys us a reduction in writes over nodiratime for any workload which reads files, such as grep -r, a kernel compile, or backup software. Do I misunderstand the question? -VAL - 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/