From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751743AbXDZS7p (ORCPT ); Thu, 26 Apr 2007 14:59:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751749AbXDZS7o (ORCPT ); Thu, 26 Apr 2007 14:59:44 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:56701 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751732AbXDZS7o (ORCPT ); Thu, 26 Apr 2007 14:59:44 -0400 Date: Thu, 26 Apr 2007 11:59:43 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: "Eric W. Biederman" cc: David Chinner , Nick Piggin , 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 In-Reply-To: Message-ID: References: <20070424222105.883597089@sgi.com> <46303A98.9000605@yahoo.com.au> <20070426063830.GE32602149@melbourne.sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 26 Apr 2007, Eric W. Biederman wrote: > If you can make small things go fast, everything speeds up. > If you can only make big things go fast only some things speed up. > > I want to make small things go fast so everything speeds up. A reductionist operating system theory? Have you ever heard of emergent properties? A system comprised of pieces can as a whole exibit other characteristics than the basic elements would provide. I think it is wrong to use the same small things for big things. You would not tow a tanker with your bicycle. Similarly you could use small pages for text files but huge page sizes when you need to transfer gigabytes or terabytes of memory. Its wrong to dictate ones size fits all. (Memories of my relatives in the eastern bloc surface but I better shut up.)