Re: CPUs and processes not evenly assigned?!

[Hubert Feyrer <hubert%feyrer.de@localhost>]

On Fri, 11 Nov 2016, Michael van Elst wrote:
> Since we don't have floating point the computation should be done in
> fixed point arithmetic, e.g.
>
> 	r_avgcount = (A * r_avgcount + B * INT2FIX(r_mcount)) / (A + B);
>
> With the current A=B=1 you get alpha=0.5, but other values are thinkable
> to make the balancer decide on the short term thread count or an even
> longer term moving average.
>
> Using one fractional bit for INT2FIX by multiplying by two might not
> be enough.

I see a lot of ground for more research here, determining right amount of 
bits and A and B. To sum up our options at this point:

a) leave the situation as-is and wait for research to get a perfect formula
b) commit the patch we have and wait for the research to be done

Given that the existing patch in PR kern/43561 and PR kern/51615 does 
improve the current situation, I'd vote for option "b".

Any takers? Any objections?


  - Hubert