From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1767720AbXCJBzC (ORCPT ); Fri, 9 Mar 2007 20:55:02 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1767721AbXCJBzB (ORCPT ); Fri, 9 Mar 2007 20:55:01 -0500 Received: from waste.org ([66.93.16.53]:37570 "EHLO waste.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1767720AbXCJBzA (ORCPT ); Fri, 9 Mar 2007 20:55:00 -0500 Date: Fri, 9 Mar 2007 19:42:30 -0600 From: Matt Mackall To: Con Kolivas Cc: linux-kernel , akpm@linux-foundation.org Subject: Re: 2.6.21-rc3-mm1 RSDL results Message-ID: <20070310014230.GP10394@waste.org> References: <20070309053931.GA10459@waste.org> <200703101134.26313.kernel@kolivas.org> <20070310004948.GN10394@waste.org> <200703101228.38923.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200703101228.38923.kernel@kolivas.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 10, 2007 at 12:28:38PM +1100, Con Kolivas wrote: > On Saturday 10 March 2007 11:49, Matt Mackall wrote: > > On Sat, Mar 10, 2007 at 11:34:26AM +1100, Con Kolivas wrote: > > > Ok, so some of the basics then. Can you please give me the output of 'top > > > -b' running for a few seconds during the whole affair? > > > > Here you go: > > > > http://selenic.com/baseline > > http://selenic.com/underload > > > > This is with 2.6.20+rsdl+tickfix at HZ=250. > > > > Something I haven't mentioned about my setup is that I'm using ccache. > > And it turns out disabling ccache makes a large difference. Going to > > switch back to a NO_HZ kernel and see what that looks like. > > Your X is reniced to -10 so.... try again with X nice 0 please. Doh, can't believe I didn't notice that. That's apparently a default in Debian/unstable (not sure where to tweak it). Reniced: without ccache with ccache make -j 5 beryl good ok galeon ok/good ok mp3 good good terminal good ok mouse good ok We're still left with a big unexplained ccache differential, and a big NO_HZ vs HZ=250 differential. -- Mathematics is the supreme nostalgia of our time.