Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751744AbZDCEHG (ORCPT ); Fri, 3 Apr 2009 00:07:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751271AbZDCEGw (ORCPT ); Fri, 3 Apr 2009 00:06:52 -0400 Received: from caffeine.csclub.uwaterloo.ca ([129.97.134.17]:60276 "EHLO caffeine.csclub.uwaterloo.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751189AbZDCEGv (ORCPT ); Fri, 3 Apr 2009 00:06:51 -0400 Date: Fri, 3 Apr 2009 00:06:49 -0400 To: Ingo Molnar Cc: Andrew Morton , torvalds@linux-foundation.org, tytso@mit.edu, drees76@gmail.com, jesper@krogh.cc, linux-kernel@vger.kernel.org Subject: Re: Linux 2.6.29 Message-ID: <20090403040649.GF3795@csclub.uwaterloo.ca> References: <20090325220530.GR32307@mit.edu> <20090326171148.9bf8f1ec.akpm@linux-foundation.org> <20090326174704.cd36bf7b.akpm@linux-foundation.org> <20090326182519.d576d703.akpm@linux-foundation.org> <20090401210337.GB3797@csclub.uwaterloo.ca> <20090401143622.b1885643.akpm@linux-foundation.org> <20090402010044.GA16092@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090402010044.GA16092@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1265 Lines: 29 On Thu, Apr 02, 2009 at 03:00:44AM +0200, Ingo Molnar wrote: > I'll test this (and the other suggestions) once i'm out of the merge > window. > > I probably wont test that though ;-) > > Going back to v2.6.14 to do pre-mutex-merge performance tests was > already quite a challenge on modern hardware. Well after a day of running my mythtv box with anticipatiry rather than the default cfq scheduler, it certainly looks a lot better. I haven't seen any slowdowns, the disk activity light isn't on solidly (it just flashes every couple of seconds instead), and it doesn't even mind me lanuching bittornado on multiple torrents at the same time as two recordings are taking place and some commercial flagging is taking place. With cfq this would usually make the system unusable (and a Q6600 with 6GB ram should never be unresponsive in my opinion). So so far I would rank anticipatory at about 1000x better than cfq for my work load. It sure acts a lot more like it used to back in 2.6.18 times. -- Len Sorensen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/