Re: nokia 770 [was Re: community PM requirements/issues and PowerOP]

Dave Jones
2006-12-14T13:17:12Z

On Thu, Dec 14, 2006 at 04:01:58PM +0300, Vitaly Wool wrote:
> On 12/14/06, Dave Jones <davej@redhat.com> wrote:
> >
> >
> > But what sense does it make for a user,sysadmin or application
> > to change voltage? If any of these want to save power, they do so
> > by a) doing less work, and then b) lowering the clock speed as this
> > is inherently tied to voltage.
> >
>
> It makes sense to perform changing an operating point dynamically in
> userland.

An operating point does not have to revolve around the voltage, nor should it.
Fill out the following.

* A sysadmin wants to set the CPU voltage to 1.5V because _________________

* A user wants to set the CPU voltage to 1.5V because _________________

* An application wants to dynamically set the voltage rather than the
frequency because ______________________

> That said, voltage should be accessible from userland.

Try again. It's completely the wrong knob to be turning.

Dave

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