From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266148AbUGIMVn (ORCPT ); Fri, 9 Jul 2004 08:21:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266151AbUGIMVn (ORCPT ); Fri, 9 Jul 2004 08:21:43 -0400 Received: from mail.zelnet.ru ([80.92.97.13]:37306 "HELO zelnet.ru") by vger.kernel.org with SMTP id S266148AbUGIMVj (ORCPT ); Fri, 9 Jul 2004 08:21:39 -0400 Message-Id: <200001011731.e01HVoNu001908@altair.deep.net> To: linux-kernel@vger.kernel.org cc: kernel@kolivas.org, akpm@osdl.org Subject: Re: Autoregulate swappiness & inactivation X-Mailer: MH-E 7.4.3; nmh 1.1; GNU Emacs 21.3.1 Date: Sat, 01 Jan 2000 18:31:50 +0100 From: deepfire@zelnet.ru Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote at Thu, 8 Jul 2004 09:44:06 -0700: > Con Kolivas wrote: > > > > Here is another try at providing feedback to tune the vm_swappiness. > > I spent some time yesterday trying to demonstrate performance improvements > from those two patches. Using > > make -j4 vmlinux with mem=64m > > and > > qsbench -p 4 -m 96 with mem=256m > > and was not able to do so, which is what I expected. > > We do need more quantitative testing on this work. i`ve done some of my favorite under-bridge-crafted tests, so to speak. the test looked like this: time find / -xdev | \ bzcat --compress | bzcat --decompress | \ bzcat --compress | bzcat --decompress | \ bzcat --compress | bzcat --decompress | \ cat > /dev/null The patches applied were Con`s autoswap + autoregulate it was performed on a p3-600, 10krpm scsi in two following scenarios: 1. mem=48M, swap=off 2.4.20-pre9: 3m20 2.6.7-con: 4m09 2.6.7-vanilla: 4m09 2. mem=32M, swap=on 2.4.20-pre9: 5m37 2.6.7-con: 6m37 2.6.7-vanilla: 7m31 which still leaves 2.4 the leader. regards, Samium "2.4" Gromoff