From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965426AbXCLJXW (ORCPT ); Mon, 12 Mar 2007 05:23:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965430AbXCLJXV (ORCPT ); Mon, 12 Mar 2007 05:23:21 -0400 Received: from mail14.syd.optusnet.com.au ([211.29.132.195]:47459 "EHLO mail14.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965426AbXCLJXV (ORCPT ); Mon, 12 Mar 2007 05:23:21 -0400 From: Con Kolivas To: Mike Galbraith Subject: Re: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2 Date: Mon, 12 Mar 2007 20:22:42 +1100 User-Agent: KMail/1.9.5 Cc: Ingo Molnar , linux kernel mailing list , ck list , Andrew Morton References: <200703111457.17624.kernel@kolivas.org> <200703121929.39702.kernel@kolivas.org> <1173689733.6748.18.camel@Homer.simpson.net> In-Reply-To: <1173689733.6748.18.camel@Homer.simpson.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703122022.43021.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 12 March 2007 19:55, Mike Galbraith wrote: > On Mon, 2007-03-12 at 19:29 +1100, Con Kolivas wrote: > > I'll save you the trouble. I just checked myself and indeed the load is > > only 1. What this means is that although there are 2 tasks running, only > > one is running at any time making a total load of 1. So, if we add two > > other tasks that add 2 more to the load the total load is 3. However if > > we weight the other two tasks at nice 5, they only add .75 each to the > > load making a weighted total of 2.5. This means that X+Gforce together > > should get a total of 1/2.5 or 40% of the overall cpu. That sounds like > > exactly what you're describing is happening. > > Hmm. So... anything that's client/server is going to suffer horribly > unless niced tasks are niced all the way down to 19? Fortunately most client server models dont usually have mutually exclusive cpu use like this X case. There are many things about X that are still a little (/me tries to think of a relatively neutral term)... wanting. :( -- -ck