From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755528AbZEPRij (ORCPT ); Sat, 16 May 2009 13:38:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752881AbZEPRia (ORCPT ); Sat, 16 May 2009 13:38:30 -0400 Received: from mx2.redhat.com ([66.187.237.31]:44445 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752255AbZEPRi3 (ORCPT ); Sat, 16 May 2009 13:38:29 -0400 Message-ID: <4A0EFA08.4060106@redhat.com> Date: Sat, 16 May 2009 13:38:16 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 2.0.0.17 (X11/20080915) MIME-Version: 1.0 To: Ray Lee CC: Christoph Lameter , Satish Eerpini , linux-kernel , fengguang.wu@intel.com Subject: Re: unresponsiveness on linux desktop during file copy References: <93655eb70905151007v5f9bb34aj34be4b65ffeb02a4@mail.gmail.com> <2c0942db0905151102y4f144437xa02632effccda72c@mail.gmail.com> <2c0942db0905160903i5517d3d6l50fc7457a2629694@mail.gmail.com> In-Reply-To: <2c0942db0905160903i5517d3d6l50fc7457a2629694@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ray Lee wrote: > On Fri, May 15, 2009 at 12:33 PM, Christoph Lameter > wrote: >> On Fri, 15 May 2009, Ray Lee wrote: >> >>> Which kernel version? If it's something recent, your programs may be >>> getting swapped out due to a flaw in the latest kernels, where it >>> accidentally prefers caching file data over mapped pages. If that's >>> the case, Rik (cc:d) is working on patches to address the issue, and >>> may appreciate another tester. >> Please keep me in the loop. I'd be interested if those patches work and >> what effect they have. > > Whoops, looks like Wu Fengguang (cc:d), not Rik, has been working on > those patches. See the messages starting with "[PATCH 0/3] make mapped > executable pages the first class citizen" [ > http://lkml.org/lkml/2009/5/16/23 ] We both have. Wu's patches build on a patch of mine, which Andrew has already merged into -mm. http://lkml.org/lkml/2009/4/29/489 -- All rights reversed.