This looks like it is related to the C-state policy issue. cpuidle along with 
menu governor will fix this, but cpuidle is currently out of mm tree. It should 
get back into acpi-test and mm tree in a day or two. Will let you know when 
that happens.
 
Thanks,
Venki

________________________________

From: Arjan van de Ven [mailto:[EMAIL PROTECTED]
Sent: Mon 5/21/2007 3:42 PM
To: Pallipadi, Venkatesh
Subject: [Fwd: Re: does hpet help save the power ?]





-------- Original Message --------
Subject: Re: does hpet help save the power ?
Date: Sun, 20 May 2007 16:27:03 +0200
From: Alexey Fisher <[EMAIL PROTECTED]>
To: [email protected]
References: <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]>  <[EMAIL PROTECTED]>

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I made a mistake in my last post.
So the lowest state with PIT is C4

C0 1,9%
C1 0%
C2 0%
C3 0%
C4 98,1%


Are the any workaround with HPET?  or this is not a bug and there is
better to use PIT?

Regards
Alex

>
> the difference PIT with HPET on lowest usage for CPU are conservations
> states,
> for PIT it looks like:
> C0 1,9%
> C1 0%
> C2 0%
> C3 98,1%
>
> for HPET:
> C0 0%
> C1 0%
> C2 36,5%
> C3 40,7%
> C4 22,8%
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