Messages in this thread | | | Date | Thu, 7 Jul 2005 22:22:25 +0200 | From | st3@riseup ... | Subject | Re: enhanced intel speedstep feature was Re: speedstep-centrino on dothan |
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On Thu, 7 Jul 2005 16:06:48 -0400 Dave Jones <davej@redhat.com> wrote:
> On Thu, Jul 07, 2005 at 10:00:27PM +0200, st3@riseup.net wrote: > > Enabling, say, a duty cycle of 12.5% means that the CPU chip will be driven > > by clock just one time every eight, thus reducing power consumption and > > temperature (and it speeds down dramatically the CPU, too =). > > > > I tested it so far on my Pentium M Dothan 715 and on a Dothan 725. > > > > What do you think, could this be useful? I could provide a patch or a > > stand-alone module. Should I write an interface to sysfs? > > You just reinvented the p4-clockmod driver :-)
Oops. =)
> This hasn't been seen to save any power whatsoever that I've seen.
It drops down power rating by 1500-1800mW on my Toshiba Satellite A50 while idling at 400MHz.
> I've heard a few reports that it reduces heat for a few folks, but > betting on it increasing your battery life is probably a push.
Just a latest question: can be p4-clockmod used together with speedstep-centrino? If not, would it make any sense to patch speedstep-centrino to use this feature too?
-- ciao st3
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