| Date | Thu, 16 Aug 2012 07:01:25 -0700 | From | Arjan van de Ven <> | Subject | Re: [discussion]sched: a rough proposal to enable power saving in scheduler |
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> *Power policy*: > > So how is power policy different? As Peter says,'pack more than spread > more'.
this is ... a dubiously general statement.
for good power, at least on Intel cpus, you want to spread. Parallelism is efficient.
the only thing you do not want to do, is wake cpus up for tasks that only run extremely briefly (think "100 usec" or less).
so maybe the balance interval is slightly different, or more, you don't balance tasks that historically ran only for brief periods
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