From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757246AbXIQUGG (ORCPT ); Mon, 17 Sep 2007 16:06:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756230AbXIQUFo (ORCPT ); Mon, 17 Sep 2007 16:05:44 -0400 Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:53548 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757989AbXIQUFn (ORCPT ); Mon, 17 Sep 2007 16:05:43 -0400 Date: Mon, 17 Sep 2007 13:05:43 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Peter Zijlstra cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman Subject: Re: [PATCH] Configurable reclaim batch size In-Reply-To: <20070917215615.685a5378@lappy> Message-ID: References: <1189812002.5826.31.camel@lappy> <20070917215615.685a5378@lappy> 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 Mon, 17 Sep 2007, Peter Zijlstra wrote: > > Tried to run AIM7 but the improvements are in the noise. I need a tests > > that really does large memory allocation and stresses the LRU. I could > > code something up but then Lee's patch addresses some of the same issues. > > Is there any standard test that shows LRU handling regressions? > > hehe, I wish. I was just hoping you'd done this patch as a result of an > actual problem and not a hunch. It was Andrew's hunch. I'd rather see Lee's approach go forward because I think it has the potential of solving the issue in a more general way. If I get some spare time with a problem system then I will test the patch.