Re: [PATCH] Staircase Scheduler v6.3 for 2.6.7-rc2

[Pavel Machek]

Hi!

> This is an update of the scheduler policy mechanism rewrite using the 
> infrastructure of the current O(1) scheduler. Slight changes from the 
> original design require a detailed description. The change to the original 
> design has enabled all known corner cases to be abolished and cpu 
> distribution to be much better maintained. It has proven to be stable in my 
> testing and is ready for more widespread public testing now.
> 
> 
> Aims:
>  - Interactive by design rather than have interactivity bolted on.
>  - Good scalability.
>  - Simple predictable design.
>  - Maintain appropriate cpu distribution and fairness.
>  - Low scheduling latency for normal policy tasks.
>  - Low overhead.
>  - Making renicing processes actually matter for CPU distribution (nice 0 gets 
> 20 times what nice +20 gets)
>  - Resistant to priority inversion

How do you solve priority inversion?

Can you do "true idle threads" now? (I.e. nice +infinity?)
									Pavel
-- 
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