From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Feb 2003 03:00:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Feb 2003 03:00:42 -0500 Received: from franka.aracnet.com ([216.99.193.44]:35247 "EHLO franka.aracnet.com") by vger.kernel.org with ESMTP id ; Sat, 22 Feb 2003 03:00:41 -0500 Date: Sat, 22 Feb 2003 00:10:46 -0800 From: "Martin J. Bligh" To: Andrew Morton cc: linux-kernel@vger.kernel.org Subject: Re: Strange performance change 59 -> 61/62 Message-ID: <25510000.1045901445@[10.10.2.4]> In-Reply-To: <20030222000410.11a46e03.akpm@digeo.com> References: <32720000.1045671824@[10.10.2.4]><20030219101957.05088aa1.akpm@digeo.com><17280000.1045811967@[10.10.2.4]><17930000.1045812486@[10.10.2.4]><20030220234522.185f3f6c.akpm@digeo.com><11870000.1045848448@[10.10.2.4]><20030221122024.040055a0.akpm@digeo.com><22560000.1045899976@[10.10.2.4]> <20030222000410.11a46e03.akpm@digeo.com> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > OK. We used to only run mark_inode_dirty() for atime updates just when it > had actually changed. ie: once per second. But for reasons which remain > obscure that was taken out. > > This probably explains your ext3 woes. Poor old ext3 has to do a ton of work > in ext3_mark_inode_dirty(), yet on 99% of the calls, nothing has even > changed. Which is why I suggested that you retest ext3 with noatime. Shall do - tommorow ;-) > I shall fix it up. Sounds great - thank you, M.