From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752151AbXD1IRf (ORCPT ); Sat, 28 Apr 2007 04:17:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030413AbXD1IRe (ORCPT ); Sat, 28 Apr 2007 04:17:34 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:51568 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752068AbXD1IRI (ORCPT ); Sat, 28 Apr 2007 04:17:08 -0400 Date: Sat, 28 Apr 2007 09:16:58 +0100 From: Christoph Hellwig To: Nick Piggin Cc: Christoph Hellwig , Christoph Lameter , Paul Mackerras , Andrew Morton , David Chinner , linux-kernel@vger.kernel.org, Mel Gorman , William Lee Irwin III , Jens Axboe , Badari Pulavarty , Maxim Levitsky Subject: Re: [00/17] Large Blocksize Support V3 Message-ID: <20070428081658.GA19281@infradead.org> Mail-Followup-To: Christoph Hellwig , Nick Piggin , Christoph Lameter , Paul Mackerras , Andrew Morton , David Chinner , linux-kernel@vger.kernel.org, Mel Gorman , William Lee Irwin III , Jens Axboe , Badari Pulavarty , Maxim Levitsky References: <20070427042046.GI65285596@melbourne.sgi.com> <20070426221528.655d79cb.akpm@linux-foundation.org> <20070426235542.bad7035a.akpm@linux-foundation.org> <17969.55533.59287.509889@cargo.ozlabs.ibm.com> <4631E173.7000204@yahoo.com.au> <4631EBC8.4060003@yahoo.com.au> <20070427133947.GB4152@infradead.org> <4632B121.3030005@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4632B121.3030005@yahoo.com.au> User-Agent: Mutt/1.4.2.2i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Apr 28, 2007 at 12:27:45PM +1000, Nick Piggin wrote: > And that wasn't due to the 128 sg limit? No, that was due to aacraid really liking sg lists as small as possible where every entry covers areas as big as possible. The driver really liked physical merging once wli changed the page allocator to return pages in the right order. > I guess 10% isn't a small amount. Though it would be nice to have > before/after numbers for Linux. I'll try to find the old thread.