Re: [RFC PATCH v1 0/3] Saving power by cpu evacuation usingsched_mc=n

[Dipankar Sarma]

On Mon, Apr 27, 2009 at 05:52:16AM +0200, Ingo Molnar wrote:
> 
> Regarding the values for 2...5 - is the AvgPower column time 
> normalized or workload normalized?
> 
> If it's time normalized then it appears there's no power win here at 
> all: we'd be better off by throttling the workload directly (by 
> injecting sleeps or something like that), right?

Energy savings with this will depend on the workload running. We have 
seen transactional workloads where taking off a few cores has almost 
no impact on throughput or response time.

Thanks
Dipankar
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