[PATCH 0/9] Experimental S3C2410A cpufreq driver

Andy Green andy at openmoko.com
Wed Feb 13 12:10:03 CET 2008


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Somebody in the thread at some point said:

> One potential scenario I was thinking of would be a low-overhead task
> that doesn't need a lot of peripherals, e.g., MP3 playback. There, it
> may be possible to get better overall power efficiency by running at a
> constant low speed than being in stop-and-go mode with bursts of high

If you succeed to reduce the CPU consumption by making it take 100 times
longer to do stuff, it also means you have to take the hit for 100 times
as much power used everywhere else (esp SDRAM in active mode) while you
wait.

- -Andy
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