On Wed, Jul 30, 2014 at 10:30:08AM +0200, Peter Zijlstra wrote: > > > > Isn't the entire effort starting from PJT and Ben up to now to soften the > > extremely > > dynamic changes (runnable or not, weight change, etc)? Assume task does not > > change > > weight much, but group entity does as Peter mentioned. > > No, softening isn't the point at all. But an integrator is the only > means of predicting the future given the erratic past. > > The whole point we got into this game is to better compute per cpu group > weights, not to soften stuff, that's just a necessarily evil to more > accurately predict erratic/unknown behaviour. > > Yes, I totally agree. I think what I meant by "soften" is the *effect* of the integrator that takes/averages the infinite history to predict the tufure.
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