From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752325AbZEQE5i (ORCPT ); Sun, 17 May 2009 00:57:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750795AbZEQE52 (ORCPT ); Sun, 17 May 2009 00:57:28 -0400 Received: from casper.infradead.org ([85.118.1.10]:51234 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724AbZEQE51 convert rfc822-to-8bit (ORCPT ); Sun, 17 May 2009 00:57:27 -0400 Date: Sat, 16 May 2009 21:57:19 -0700 From: Arjan van de Ven To: Satish Eerpini Cc: Wu Fengguang , Rik van Riel , Ray Lee , Christoph Lameter , linux-kernel Subject: Re: unresponsiveness on linux desktop during file copy Message-ID: <20090516215719.1fe0d583@infradead.org> In-Reply-To: <93655eb70905162130k13ebd627o5eba2582508a1c07@mail.gmail.com> References: <93655eb70905151007v5f9bb34aj34be4b65ffeb02a4@mail.gmail.com> <2c0942db0905151102y4f144437xa02632effccda72c@mail.gmail.com> <2c0942db0905160903i5517d3d6l50fc7457a2629694@mail.gmail.com> <4A0EFA08.4060106@redhat.com> <20090517011906.GA6375@localhost> <93655eb70905161827x34a432ebn4910ee86d9bae30@mail.gmail.com> <20090517020829.GB6809@localhost> <93655eb70905162130k13ebd627o5eba2582508a1c07@mail.gmail.com> Organization: Intel X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 17 May 2009 10:00:28 +0530 Satish Eerpini wrote: > > I've prepared a rolled up patch for you, run time tested.  It should > > protect all of the above pages from being evicted by large file > > copies. > > > > The attached patch is for 2.6.29. > > I applied the patch , but the number don seem to show much difference > , following are the statistics with the patched kernel, could > something else be causing the huge iowait, : > for i in `pidof kjournald` ; do ionice -c1 -p $i ; done is another thing to try to fix the responsiveness... -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org