RE: [linux-pm] [RFC PATCH 0/4] timers: Timer migration

[Tian, Kevin]

>From: Arjan van de Ven
>Sent: Thursday, October 16, 2008 10:38 PM
>On Thu, 16 Oct 2008 17:12:39 +0530
>>
>>
>> Here's a brief introduction as to why we need timer migration.
>>
>
>as I've said before, for reducing power consumption I don't buy into
>needing this concept....
>
>If you have high frequency timers, you've lost no matter what (and we
>fixed almost all of them in the ecosystem); if you don't have those
>then this patch doesn't really add anything.
>(and the range-hrtimers fixes the intermediate state)
>

Does range-hrtimers work in per-cpu style or globally? If the former
I guess this timer migration may help range-hrtimers feature to
further align rest timers. If globally, then small room remains.

Arun, did you have any actual power improvement data with it?

Thanks,
Kevin
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