linux-kernel - Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1]

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Message-ID: <20070222212524.GA16830@rhlx01.hs-esslingen.de>
Date:	Thu, 22 Feb 2007 22:25:24 +0100
From:	Andreas Mohr <andi@...x01.fht-esslingen.de>
To:	Pierre Ossman <drzeus-list@...eus.cx>
Cc:	Arjan van de Ven <arjan@...radead.org>, tglx@...utronix.de,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Luca Tettamanti <kronos.it@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1]

Hi,

On Thu, Feb 22, 2007 at 10:07:19PM +0100, Pierre Ossman wrote:
> Arjan van de Ven wrote:
> > no; c3 saves a TON more power. 
> >
> > you can try enabling HPET in your BIOS...
> >
> >   
> 
> Hah, I wish! This is a laptop, so the BIOS is as brain dead and broken
> as is humanly possible.
> 
> Can I determine if I have the required hardware? So I can tell if I'm
> permanently screwed, or just temporarily.

http://lkml.org/lkml/2006/11/14/153

and related posts in this older thread
("CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1]")
should help.

Andreas Mohr
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