From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264331AbTLQLHH (ORCPT ); Wed, 17 Dec 2003 06:07:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264353AbTLQLHH (ORCPT ); Wed, 17 Dec 2003 06:07:07 -0500 Received: from holomorphy.com ([199.26.172.102]:46992 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S264331AbTLQLHF (ORCPT ); Wed, 17 Dec 2003 06:07:05 -0500 Date: Wed, 17 Dec 2003 03:06:48 -0800 From: William Lee Irwin III To: Rik van Riel , Andrew Morton , Andrea Arcangeli , kernel@kolivas.org, chris@cvine.freeserve.co.uk, linux-kernel@vger.kernel.org, mbligh@aracnet.com Subject: Re: 2.6.0-test9 - poor swap performance on low end machines Message-ID: <20031217110648.GB31393@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Rik van Riel , Andrew Morton , Andrea Arcangeli , kernel@kolivas.org, chris@cvine.freeserve.co.uk, linux-kernel@vger.kernel.org, mbligh@aracnet.com References: <20031216112307.GA5041@k3.hellgate.ch> <20031217110336.GA5615@k3.hellgate.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031217110336.GA5615@k3.hellgate.ch> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 16 Dec 2003 11:29:50 -0500, Rik van Riel wrote: >> Could you try "echo 0 > /proc/sys/vm/lower_zone_protection" ? On Wed, Dec 17, 2003 at 12:03:37PM +0100, Roger Luethi wrote: > Defaults to 0 anyway, doesn't it? Turning it _on_ seems to slow > benchmarks down somewhat (< 5%). In one of ten runs, though, the efax > test stopped doing anything for ten minutes -- no disk activity, no > progress whatsoever. Sorry about that, that got brought up elsewhere but not propagated out to lkml. Hearing more about the various degradations you've identified would be helpful. -- wli