Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753034AbXISCnr (ORCPT ); Tue, 18 Sep 2007 22:43:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751342AbXISCni (ORCPT ); Tue, 18 Sep 2007 22:43:38 -0400 Received: from mail.app.aconex.com ([203.89.192.138]:39286 "EHLO postoffice.aconex.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751296AbXISCng (ORCPT ); Tue, 18 Sep 2007 22:43:36 -0400 Subject: Re: [00/41] Large Blocksize Support V7 (adds memmap support) From: Nathan Scott Reply-To: nscott@aconex.com To: Linus Torvalds Cc: Andrea Arcangeli , Nick Piggin , Christoph Lameter , Mel Gorman , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig , William Lee Irwin III , David Chinner , Jens Axboe , Badari Pulavarty , Maxim Levitsky , Fengguang Wu , swin wang , totty.lu@gmail.com, hugh@veritas.com, joern@lazybastard.org In-Reply-To: References: <20070911060349.993975297@sgi.com> <200709161853.12050.nickpiggin@yahoo.com.au> <200709181116.22573.nickpiggin@yahoo.com.au> <20070918191853.GB7541@v2.random> <1190163523.24970.378.camel@edge.yarra.acx> Content-Type: text/plain Organization: Aconex Date: Wed, 19 Sep 2007 12:45:32 +1000 Message-Id: <1190169932.24970.384.camel@edge.yarra.acx> Mime-Version: 1.0 X-Mailer: Evolution 2.6.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 859 Lines: 29 On Tue, 2007-09-18 at 18:06 -0700, Linus Torvalds wrote: > There is *no* valid reason for 16kB blocksizes unless you have legacy > issues. That's not correct. > The performance issues have nothing to do with the block-size, and We must be thinking of different performance issues. > should be solvable by just making sure that your stupid "state of the > art" > crap SCSI controller gets contiguous physical memory, which is best > done > in the read-ahead code. SCSI controllers have nothing to do with improving ondisk layout, which is the performance issue I've been referring to. cheers. -- Nathan - 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/