CPU Frequency Scaling

[Thomas M Steenholdt]

HM Eng.Prowip wrote:
> On Sunday 03 December 2006 15:29, Arjan van de Ven wrote:
>>> On AC, the default is to run at full speed,
>> I think that's a mistake. Especially for servers, power usage does
>> matter ...
> 
> mhhh ... especially for servers power does matter, power usage does not matter 
> at all but that is only a economical question, i got curious here do you run 
> your server really on DC or battery?
> 
> HM
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If the scaling governor is quick enough to detect the need and perform 
the transition, most workloads should not see an actual performance hit 
by having this enabled. And saving power during idle periods is the 
right thing to do for a number of reasons, even on servers.
However, I've not conducted any benchmarks of the transition speeds etc, 
so I don't know how well this theory holds in the real world.

/Thomas