From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754466AbXD1Ciw (ORCPT ); Fri, 27 Apr 2007 22:38:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030433AbXD1Ciw (ORCPT ); Fri, 27 Apr 2007 22:38:52 -0400 Received: from holomorphy.com ([66.93.40.71]:33546 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754451AbXD1Civ (ORCPT ); Fri, 27 Apr 2007 22:38:51 -0400 Date: Fri, 27 Apr 2007 19:39:01 -0700 From: William Lee Irwin III To: Nick Piggin Cc: Christoph Hellwig , Christoph Lameter , Paul Mackerras , Andrew Morton , David Chinner , linux-kernel@vger.kernel.org, Mel Gorman , Jens Axboe , Badari Pulavarty , Maxim Levitsky Subject: Re: [00/17] Large Blocksize Support V3 Message-ID: <20070428023901.GT19966@holomorphy.com> 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> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) 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: > I guess 10% isn't a small amount. Though it would be nice to have > before/after numbers for Linux. And, like Andrew was saying, we could > just _attempt_ to put contiguous pages in pagecache rather than > _require_ it. Which is still robust under fragmentation, and benefits > everyone, not just files with a large pagecache size. What sort of strategy do you intend to use to speculatively populate the pagecache with contiguous pages? -- wli