From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Phil K." Subject: Re: Problems with cyclictest and ps Date: Thu, 06 Dec 2007 11:23:06 +0100 Message-ID: <4757CD8A.10909@gmail.com> References: <47570B50.9060502@gmail.com> <475735D2.3070003@arcor.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: linux-rt-users@vger.kernel.org To: Florian Boelstler l Return-path: Received: from nf-out-0910.google.com ([64.233.182.184]:62166 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752356AbXLFKZR (ORCPT ); Thu, 6 Dec 2007 05:25:17 -0500 Received: by nf-out-0910.google.com with SMTP id g13so59405nfb for ; Thu, 06 Dec 2007 02:25:16 -0800 (PST) In-Reply-To: <475735D2.3070003@arcor.de> Sender: linux-rt-users-owner@vger.kernel.org List-ID: Florian Boelstler wrote: > Hi, > > Phil K. wrote: >> I tried cyclictest under Debian Lenny with Kernel-2.6.23.8-hrt3 and >> Kernel-2.6.22 as user root. As decribed on the cyclictest-wikipage all >> cyclictest-tasks run with the scheduler class SCHED_FIFO. I controlled >> the scheduler class with "ps -ce" and ps showed me SCHED_OTHER for the >> cyclictest-task. > > I had the same problem using 2.6.23.9-rt12 on Debian Etch > (schedutils-1.5.0-1) today. When checking the current state of > cyclictest with chrt (chrt -p SCHED_OTHER and priority 0. > When I tried to change the scheduling policy and/or priority with chrt > it seemed to fail as well (not sure whether it tells the truth though). > On the other hand starting cyclictest via chrt did the trick: > "chrt -f 80 cyclictest..." > > I can provide further details, when I am closer to the machine in > question tomorrow. > > Cheers, > > Florian I posted the solution for that problem and described it in the RTWiki(http://rt.wiki.kernel.org/index.php/Cyclictest#FAQ). Greetings, Phil