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

Andreas Mohr
2007-02-22T21:25:28Z

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