From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: [RFC][PATCH 0/3] update to cpupri algorithm Date: Fri, 29 Jul 2011 17:38:47 +0200 Message-ID: <1311953927.30862.64.camel@marge.simson.net> References: <20110729151340.419467771@goodmis.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Peter Zijlstra , RT To: Steven Rostedt Return-path: Received: from cantor2.suse.de ([195.135.220.15]:43366 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751470Ab1G2Pit (ORCPT ); Fri, 29 Jul 2011 11:38:49 -0400 In-Reply-To: <20110729151340.419467771@goodmis.org> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Fri, 2011-07-29 at 11:13 -0400, Steven Rostedt wrote: > Hi Mike, > > Could you try this patch set out. Add the first patch and then > run your tests. The first patch only adds benchmarking, and does not > modify the scheduler algorithm. I will happily do all of the below. > Do this: > > 1. apply first patch, build and boot > 2. # mount -t debugfs nodev /sys/kernel/debug > 3. # echo 0 > /sys/kernel/debug/cpupri; ./runtest; cat /sys/kernel/debug/cpupri > output > > The output will give you the contention of the vector locks in the > cpupri algorithm. > > Then apply the second patch and do the same thing. > > Then apply the third patch and do the same thing. > > After that, could you send me the results of the output file for all > three runs? The final patch should probably be the best overall > results. > > Thanks! Thank you. -Mike