From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264145AbTLJVxk (ORCPT ); Wed, 10 Dec 2003 16:53:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264136AbTLJVvq (ORCPT ); Wed, 10 Dec 2003 16:51:46 -0500 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:30426 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S263996AbTLJVu4 (ORCPT ); Wed, 10 Dec 2003 16:50:56 -0500 Date: Wed, 10 Dec 2003 22:52:35 +0100 From: Andrea Arcangeli To: William Lee Irwin III , rl@hellgate.ch, 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: <20031210215235.GC11193@dualathlon.random> References: <200311031148.40242.kernel@kolivas.org> <200311032113.14462.chris@cvine.freeserve.co.uk> <200311041355.08731.kernel@kolivas.org> <20031208135225.GT19856@holomorphy.com> <20031208194930.GA8667@k3.hellgate.ch> <20031208204817.GA19856@holomorphy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031208204817.GA19856@holomorphy.com> User-Agent: Mutt/1.4.1i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 08, 2003 at 12:48:17PM -0800, William Lee Irwin III wrote: > qsbench I'd pretty much ignore except as a control case, since there's > nothing to do with a single process but let it thrash. this is not the point. If a single process like qsbench trashes twice as fast in 2.4, it means 2.6 has some great problem in the core vm, the whole point of swap is to trash but to give the task more physical virtual memory. I doubt you can solve it with anything returned by si_swapinfo.