Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422744AbWBILIq (ORCPT ); Thu, 9 Feb 2006 06:08:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422883AbWBILIq (ORCPT ); Thu, 9 Feb 2006 06:08:46 -0500 Received: from ecfrec.frec.bull.fr ([129.183.4.8]:14055 "EHLO ecfrec.frec.bull.fr") by vger.kernel.org with ESMTP id S1422744AbWBILIp convert rfc822-to-8bit (ORCPT ); Thu, 9 Feb 2006 06:08:45 -0500 Subject: Re: preempt-rt, NUMA and strange latency traces From: =?ISO-8859-1?Q?S=E9bastien_Dugu=E9?= To: john stultz Cc: Steven Rostedt , "linux-kernel@vger.kernel.org" , Ingo Molnar In-Reply-To: <1139417369.16302.1.camel@leatherman> References: <1139311689.19708.36.camel@frecb000686> <1139395534.21471.13.camel@frecb000686> <1139417369.16302.1.camel@leatherman> Date: Thu, 09 Feb 2006 12:11:31 +0100 Message-Id: <1139483492.5706.12.camel@frecb000686> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 X-MIMETrack: Itemize by SMTP Server on ECN002/FR/BULL(Release 5.0.12 |February 13, 2003) at 09/02/2006 12:09:25, Serialize by Router on ECN002/FR/BULL(Release 5.0.12 |February 13, 2003) at 09/02/2006 12:09:40, Serialize complete at 09/02/2006 12:09:40 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1167 Lines: 32 On Wed, 2006-02-08 at 08:49 -0800, john stultz wrote: > On Wed, 2006-02-08 at 11:45 +0100, S?bastien Dugu? wrote: > > The more I think about it, the more I tend to believe it's hardware > > related. It seems as if the CPU just hangs for ~27 ms before > > resuming processing. > > That sounds like to the ~30ms RSA caused SMIs. Does this system have an > RSA1 or RSA2 card? > Hi John, I think it's an RSA1 card, but no certainty here. I don't think the x440 came with the RSA2. Is there a way to check for sure without unplugging everything (It's such a mess of cables behind the box)? Whats the SMI issue with the RSA? Could the RSA generate bursts of SMI that could be enough to freeze the CPUs? When I ran those tests I was logged on the RSA (serial line). I will try to run the tests again without being connected when I can manage to get some CPU time (eh! shared machine)... Thanks. S?bastien. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/