From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264162AbTLKAMz (ORCPT ); Wed, 10 Dec 2003 19:12:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264127AbTLKAMz (ORCPT ); Wed, 10 Dec 2003 19:12:55 -0500 Received: from holomorphy.com ([199.26.172.102]:52707 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S264231AbTLKAMy (ORCPT ); Wed, 10 Dec 2003 19:12:54 -0500 Date: Wed, 10 Dec 2003 16:12:32 -0800 From: William Lee Irwin III To: Con Kolivas , Chris Vine , Rik van Riel , linux-kernel@vger.kernel.org, "Martin J. Bligh" Subject: Re: 2.6.0-test9 - poor swap performance on low end machines Message-ID: <20031211001232.GV8039@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Con Kolivas , Chris Vine , Rik van Riel , linux-kernel@vger.kernel.org, "Martin J. Bligh" References: <20031208135225.GT19856@holomorphy.com> <20031208194930.GA8667@k3.hellgate.ch> <20031208204817.GA19856@holomorphy.com> <20031209002745.GB8667@k3.hellgate.ch> <20031209040501.GE19856@holomorphy.com> <20031209151103.GA4837@k3.hellgate.ch> <20031209193801.GF19856@holomorphy.com> <20031210135829.GA18370@k3.hellgate.ch> <20031210174757.GK19856@holomorphy.com> <20031210222355.GB28912@k3.hellgate.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031210222355.GB28912@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 Wed, Dec 10, 2003 at 11:23:55PM +0100, Roger Luethi wrote: > Level of overcommitment? What kind of criteria is that supposed to be? > You can have 10x overcommit and not thrash at all, if most of the memory > is allocated and filled but never referenced again. IOW, I can't derive > an algorithm from your handwaving . There is no handwaving; the answer is necessarily ambiguous. -- wli