Messages in this thread | | | Date | Tue, 21 Oct 2003 17:10:10 -0700 | From | Carl Thompson <> | Subject | RE: [PATCH] 3/3 Dynamic cpufreq governor and updates toACPIP-state driver |
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Quoting "Nakajima, Jun" <jun.nakajima@intel.com>:
> ...
> Then you can put the CPU in C-state or lower P-state after (or even > during) your word processor displays the letter. Even you can type very > fast, the CPU is almost idle. Having frequent feedbacks simply provide > more chances to save power consumption. Then aggregate saving would make > a difference. In addition, penalty of making a wrong decision is cheap.
No, it is _more_ expensive. With a longer poll interval, the CPU would never be changed from the slowest speed because the percent idle over that period would be too high. More chances to switch speeds out of slowest is more expensive, not less.
> ...
Carl Thompson
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