From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161039AbXBUPI3 (ORCPT ); Wed, 21 Feb 2007 10:08:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161275AbXBUPIY (ORCPT ); Wed, 21 Feb 2007 10:08:24 -0500 Received: from [212.12.190.63] ([212.12.190.63]:32862 "EHLO raad.intranet" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1161250AbXBUPGw (ORCPT ); Wed, 21 Feb 2007 10:06:52 -0500 From: Al Boldi To: linux-kernel@vger.kernel.org Subject: Re: [PATCH] free swap space when (re)activating page Date: Wed, 21 Feb 2007 18:09:45 +0300 User-Agent: KMail/1.5 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200702211809.45705.a1426z@gawab.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rik van Riel wrote: > Rik van Riel wrote: > > ... because I think this is what my patch does :) > > Never mind, I see it now. > > The attached patch should be correct. Your patch seems to improve the situation a little bit, but the numbers still look weird, especially for swap-in, which gets progressively slower. RAM 512mb , SWAP 1G #mount -t tmpfs -o size=1G none /dev/shm #time cat /dev/full > /dev/shm/x.dmp 15sec #time cat /dev/shm/x.dmp > /dev/null 58sec #time cat /dev/shm/x.dmp > /dev/null 72sec #time cat /dev/shm/x.dmp > /dev/null 85sec #time cat /dev/shm/x.dmp > /dev/null 93sec #time cat /dev/shm/x.dmp > /dev/null 99sec Thanks! -- Al