From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965913AbYD1T4J (ORCPT ); Mon, 28 Apr 2008 15:56:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1765483AbYD1Tzz (ORCPT ); Mon, 28 Apr 2008 15:55:55 -0400 Received: from mx1.redhat.com ([66.187.233.31]:58651 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932082AbYD1Tzy (ORCPT ); Mon, 28 Apr 2008 15:55:54 -0400 Date: Mon, 28 Apr 2008 15:55:00 -0400 From: Rik van Riel To: linux-kernel@vger.kernel.org Cc: lee.schermerhorn@hp.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com Subject: Re: [PATCH -mm 00/15] VM pageout scalability improvements (V6) Message-ID: <20080428155500.0ab3f4a7@cuia.boston.redhat.com> In-Reply-To: <20080428181835.502876582@redhat.com> References: <20080428181835.502876582@redhat.com> Organization: Red Hat, Inc X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.5; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 28 Apr 2008 14:18:35 -0400 Rik van Riel wrote: > This patch series improves VM scalability Here is some (absolutely minimal) performance data. Running "fillmem 16000" on my 16 GB test system puts the system about 800MB into swap. Both run time and CPU use are improved with this patch series. The numbers are an average of about a dozen runs. 2.6.25-mm1: real 1m31 user 0m11 sys 0m32 2.5.25-mm1-splitvm: real 1m02 user 0m11 sys 0m22 This does not account for kswapd CPU use, which accumulated to about 56 seconds total in the splitvm kernel, but around 5 minutes on 2.6.25-mm1. I will make a kernel RPM with the split LRU patch set available so other people can easily do performance tests. -- All Rights Reversed