Re: [PATCH] sched: wake-affine throttle

[Peter Zijlstra]

On Wed, 2013-04-10 at 11:30 +0800, Michael Wang wrote:
> | 15 GB   |      32 | 35918 |   | 37632 | +4.77% | 47923 | +33.42% |
> 52241 | +45.45%

So I don't get this... is wake_affine() once every milisecond _that_
expensive?

Seeing we get a 45%!! improvement out of once every 100ms that would
mean we're like spending 1/3rd of our time in wake_affine()? that's
preposterous. So what's happening?



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