From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932112AbXGUU73 (ORCPT ); Sat, 21 Jul 2007 16:59:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758358AbXGUU7R (ORCPT ); Sat, 21 Jul 2007 16:59:17 -0400 Received: from tomts16.bellnexxia.net ([209.226.175.4]:35658 "EHLO tomts16-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757238AbXGUU7Q (ORCPT ); Sat, 21 Jul 2007 16:59:16 -0400 X-Greylist: delayed 1800 seconds by postgrey-1.27 at vger.kernel.org; Sat, 21 Jul 2007 16:59:15 EDT Subject: Re: [PATCH 1/3] readahead: drop behind From: Eric St-Laurent To: Peter Zijlstra Cc: linux-kernel , Fengguang Wu , riel , Andrew Morton , Rusty Russell , Tim Pepper , Chris Snook In-Reply-To: <1185050276.5652.23.camel@lappy> References: <20070721210005.000228000@chello.nl> <20070721210051.975382000@chello.nl> <1185049747.27915.8.camel@perkele> <1185050276.5652.23.camel@lappy> Content-Type: text/plain Date: Sat, 21 Jul 2007 16:59:11 -0400 Message-Id: <1185051551.28982.4.camel@perkele> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > They are against git of a few hours ago and the latest readahead patches > from Wu (which don't apply cleanly either, but the rejects are trivial). > > > It would be useful to have a temporary /proc tunable to enable/disable > > the heuristic to help test the effects. > > Right, I had such a patch somewhere,.. won't apply cleanly but should be > obvious.. Thanks, I will merge theses and report back with some results. After copying large files, I find my system sluggish. I hope your changes will help. - Eric