Return-Path: <linux-kernel-owner+w=401wt.eu-S1752894AbXE3AFF@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752894AbXE3AFF (ORCPT <rfc822;w@1wt.eu>);
	Tue, 29 May 2007 20:05:05 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751255AbXE3AEz
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Tue, 29 May 2007 20:04:55 -0400
Received: from mxfep03.bredband.com ([195.54.107.76]:39732 "EHLO
	mxfep03.bredband.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751174AbXE3AEy (ORCPT
	<rfc822;Linux-kernel@vger.kernel.org>);
	Tue, 29 May 2007 20:04:54 -0400
Subject: Re: [BUG] Something goes wrong with timer statistics.
From: Ian Kumlien <iank@bredband.net>
To: David Miller <davem@davemloft.net>
Cc: michal.k.k.piotrowski@gmail.com, Linux-kernel@vger.kernel.org
In-Reply-To: <20070529.160338.51845499.davem@davemloft.net>
References: <6bffcb0e0705291541q7e6d6faen5cd6345074c4c92a@mail.gmail.com>
	 <20070529.154406.104042418.davem@davemloft.net>
	 <1180479122.19814.8.camel@pi.pomac.com>
	 <20070529.160338.51845499.davem@davemloft.net>
Content-Type: text/plain
Date: Wed, 30 May 2007 02:04:31 +0200
Message-Id: <1180483481.30698.3.camel@pi.pomac.com>
Mime-Version: 1.0
X-Mailer: Evolution 2.10.1 
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1989
Lines: 49

On tis, 2007-05-29 at 16:03 -0700, David Miller wrote:
> From: Ian Kumlien <iank@bredband.net>
> Date: Wed, 30 May 2007 00:51:52 +0200
> 
> > On tis, 2007-05-29 at 15:44 -0700, David Miller wrote:
> > > From: "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>
> > > Date: Wed, 30 May 2007 00:41:46 +0200
> > > 
> > > > On 30/05/07, David Miller <davem@davemloft.net> wrote:
> > > > > From: Ian Kumlien <iank@bredband.net>
> > > > > Date: Tue, 29 May 2007 23:38:48 +0200
> > > > >
> > > > > > As the daystar sets, i try to play some with my new would be
> > > > > > firewall/server, but since this will be running for quite some time i
> > > > > > have been experimenting with powertop to find out what i can do to limit
> > > > > > it's power usage.
> > > > > >
> > > > > > But, if i run powertop for too long or a few times to many... this
> > > > > > happens:
> > > > > > http://pomac.netswarm.net/pics/kernel_panic.jpg
> > > > > >
> > > > > > If i don't run powertop, it is rock solid... Compiling for hours,
> > > > > > running memtest for hours etc etc...
> > > > >
> > > > > I see this same exact problem on sparc64.
> > > > 
> > > > Have you tried this patch?
> > > > http://lkml.org/lkml/2007/5/29/392
> > > 
> > > Of course, I worked with Thomas on the fix :-)
> > 
> > I dunno if this applies to me, i run a 32 bit userspace...
> 
> That patch fixes a problem on 64-bit kernels, regardless of
> userspace, when NOHZ is enabled.

Sorry, i run all 32 bit, i was on the phone while typing that, so a wee
bit distracted. Anyways, i run a nohz 32 bit kernel.

I dunno how good a intel T7200 is when it comes to 64 bit
kernel/userspace.. (Haven't really read up on it)

-- 
Ian Kumlien <pomac () vapor ! com> -- http://pomac.netswarm.net
-
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/