Re: [patch] Real-Time Preemption, plist fixes

[Ingo Molnar]

* Esben Nielsen <simlo@xxxxxxxxxx> wrote:

> [...] In extreme load situations we could end up with a lot of waiters 
> on mmap_sem forinstance.

what do you mean by extreme load. Extreme number of RT tasks, or extreme 
number of tasks altogether? The sorted-list implementation i had in -RT 
had all non-RT tasks handled in an O(1) way - the O(N) component was for 
adding RT tasks (removal was O(1)).

so the question is - can we have an extreme (larger than 140) number of 
RT tasks? If yes, why are they all RT - they can have no expectation of 
good latencies with a possible load factor of 140!

	Ingo
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