[lkml]   [2005]   [Jul]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: enhanced intel speedstep feature was Re: speedstep-centrino on dothan
On Thu, Jul 07, 2005 at 10:22:25PM +0200, wrote:
> > 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.

Do you use ACPI-based idling? If so, in which state is the CPU in (cat
/proc/acpi/processor/*/power ? I suspect that you do not use ACPI (else
you wouldn't need the table-based approach) or that the ACPI-based idling is
broken on your notebook; as then the Linux idle handler only makes use of
"hlt" (IIRC), that is ACPI C1, while throttling "forces" ACPI C2 (again

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-07-07 23:16    [W:0.048 / U:5.608 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site