From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754659AbXIQRzM (ORCPT ); Mon, 17 Sep 2007 13:55:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752130AbXIQRzB (ORCPT ); Mon, 17 Sep 2007 13:55:01 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:41928 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751409AbXIQRzA (ORCPT ); Mon, 17 Sep 2007 13:55:00 -0400 Date: Mon, 17 Sep 2007 10:54:59 -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 Subject: Re: [PATCH] Configurable reclaim batch size In-Reply-To: <1189812002.5826.31.camel@lappy> Message-ID: References: <1189812002.5826.31.camel@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 Sat, 15 Sep 2007, Peter Zijlstra wrote: > It increases the lock hold times though. Otoh it might work out with the > lock placement. Yeah may be good for NUMA. > Do you have any numbers that show this is worthwhile? 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?