Re: [patch, 2.6.11-rc2] sched: RLIMIT_RT_CPU_RATIO feature

[Ingo Molnar]

* Peter Williams <pwil3058@xxxxxxxxxxxxxx> wrote:

> I think part of the problem here is that by comparing each tasks limit
> to the runqueue's usage rate (and to some extent using a relatively
> short decay period) you're creating the need for the limits to be
> quite large i.e. it has to be big enough to be bigger than the
> combined usage rates of all the unprivileged real time tasks and also
> to handle the short term usage rate peaks of the task.

actually, at least for Jackd use, the current average worked out pretty
well - setting the limit 5-10% above that of the reported average CPU
use gave a result that was equivalent to unrestricted SCHED_FIFO
results.

	Ingo
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