Re: [discussion]sched: a rough proposal to enable power saving inscheduler

[Mike Galbraith]

On Tue, 2012-08-21 at 17:02 +0100, Alan Cox wrote:

> I'd like to see actual numbers and evidence on a wide range of workloads
> the spread/don't spread thing is even measurable given that you've also
> got to factor in effects like completing faster and turning everything
> off. I'd *really* like to see such evidence on a laptop,which is your
> one cited case it might work.

For my dinky dual core laptop, I suspect you're right, but for a more
powerful laptop, I'd expect spread/don't to be noticeable.

Yeah, hard numbers would be nice to see.

If I had a powerful laptop, I'd kill irq balancing, and all but periodic
load balancing, and expect to see a positive result.  Dunno what fickle
electron gods would _really_ do with those prayers though.

-Mike

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