From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: 2.6.24.2-rt2 Date: Tue, 26 Feb 2008 18:15:56 +0100 Message-ID: <47C4494C.1090600@siemens.com> References: <1203639849.7551.4.camel@localhost.localdomain> <47C3EA1F.3030203@siemens.com> <47C3FF82.6060900@siemens.com> <47C43289.80506@siemens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: LKML , RT , Ingo Molnar , Thomas Gleixner To: Steven Rostedt Return-path: Received: from lizzard.sbs.de ([194.138.37.39]:60088 "EHLO lizzard.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762436AbYBZRQ2 (ORCPT ); Tue, 26 Feb 2008 12:16:28 -0500 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: Steven Rostedt wrote: > > On Tue, 26 Feb 2008, Jan Kiszka wrote: >>> What's the NUMA topology? >> 4 nodes. I'm not sure if it is really NUMA related, but the same kernel >> runs that test as expected on a non-NUMA 2x2 box. >> >>> What tasks are running, and at what priorities? >> 40 pthreads, created with default parameters from a main thread which >> runs with default parameters as well. The threads simply run endless loops. >> >>> Those three idle CPUS, should they have tasks running on them? >> For sure, given the overload situation of the system (40x full load vs. >> 16 cores). Neither did we fiddle with any parameter of the system >> (knowingly, its a standard openSUSE 10.3 underneath) nor did we set >> thread affinities. >> > > Do you get different behaviour with 2.6.24.2? Last time I checked mainline (I think 2.6.24), it was fine. It was definitely fine for 2.6.23. But I'm going to revalidate this once the machine is free again (tomorrow). Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux