From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265416AbTLHObC (ORCPT ); Mon, 8 Dec 2003 09:31:02 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265421AbTLHObC (ORCPT ); Mon, 8 Dec 2003 09:31:02 -0500 Received: from holomorphy.com ([199.26.172.102]:26331 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S265416AbTLHObA (ORCPT ); Mon, 8 Dec 2003 09:31:00 -0500 Date: Mon, 8 Dec 2003 06:30:52 -0800 From: William Lee Irwin III To: Con Kolivas Cc: 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: <20031208143052.GI8039@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: <200311041355.08731.kernel@kolivas.org> <20031208135225.GT19856@holomorphy.com> <200312090123.31895.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200312090123.31895.kernel@kolivas.org> 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, Dec 09, 2003 at 01:23:31AM +1100, Con Kolivas wrote: > [snip original discussion thrashing swap on 2.6test with 32mb ram] > Chris > By an unusual coincidence I was looking into the patches that were supposed to > speed up application startup and noticed this one was merged. A brief > discussion with wli suggests this could cause thrashing problems on low > memory boxes so can you try this patch? Applies to test11. This is effectively only called when faulting on paged-out ptes whose file offsets were disturbed by remap_file_pages() and when calling remap_file_pages() itself. -- wli