On Thu, 7 Jul 2005 16:06:48 -0400 Dave Jones <[EMAIL PROTECTED]> wrote:
> On Thu, Jul 07, 2005 at 10:00:27PM +0200, [EMAIL PROTECTED] 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
