powerd adaptive mode latching

[Oliver Fromme]

Igor Mozolevsky wrote:
 > -i 95 -p 50 -r 50  made my T43p much more responsive

It should be mentioned that you need to be a little careful
with the -p option.  When I lowered the value to the point
where it seemed to have an actual effect, powerd started to
consume a measurable amount of CPU performance.  I think
that powerd _should_ consume near zero CPU for its purpose.

So if you play with the -p option, I recommend to watch it
in top(1), so the cure doesn't turn out to be worse than
the desease.

Best regards
   Oliver

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