Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751376AbWCBBuW (ORCPT ); Wed, 1 Mar 2006 20:50:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751369AbWCBBuW (ORCPT ); Wed, 1 Mar 2006 20:50:22 -0500 Received: from smtp.osdl.org ([65.172.181.4]:6332 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751377AbWCBBuT (ORCPT ); Wed, 1 Mar 2006 20:50:19 -0500 Date: Wed, 1 Mar 2006 17:52:30 -0800 From: Andrew Morton To: Badari Pulavarty Cc: linux-kernel@vger.kernel.org, pbadari@us.ibm.com Subject: Re: [PATCH 0/4] map multiple blocks in get_block() and mpage_readpages() Message-Id: <20060301175230.4b96e9ad.akpm@osdl.org> In-Reply-To: <1141075239.10542.19.camel@dyn9047017100.beaverton.ibm.com> References: <1141075239.10542.19.camel@dyn9047017100.beaverton.ibm.com> X-Mailer: Sylpheed version 1.0.0 (GTK+ 1.2.10; i386-vine-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 711 Lines: 19 Badari Pulavarty wrote: > > I noticed decent improvements (reduced sys time) on JFS, XFS and ext3. > (on simple "dd" read tests). > > (rc3.mm1) (rc3.mm1 + patches) > real 0m18.814s 0m18.482s > user 0m0.000s 0m0.004s > sys 0m3.240s 0m2.912s With which filesystem? XFS and JFS implement a larger-than-b_size ->get_block, but ext3 doesn't. I'd expect ext3 system time to increase a bit, if anything? - 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/