Re: [patch, 2.6.11-rc2] sched: /proc/sys/kernel/rt_cpu_limit tunable

[Nick Piggin]

Jack O'Quin wrote:
> Ingo Molnar <mingo@xxxxxxx> writes:
>
>
> > * Ingo Molnar <mingo@xxxxxxx> wrote:
> >
> > this patch adds the /proc/sys/kernel/rt_cpu_limit tunable: the maximum
> > amount of CPU time all RT tasks combined may use, in percent. Defaults
> > to 80%.
> >
> > just apply the patch to 2.6.11-rc2 and you should be able to run e.g. 
> > "jackd -R" as an unprivileged user.
>
>
> This is a far better idea from an API perspective.  We can continue
> writing to the POSIX realtime standard interfaces.  Yet users can
> actually take advantage of them.  I like it.

This still doesn't solve your privlige problem though. If I can't
renice something as a regular user, it makes no sense to allow such
realtime behaviour.

I still think the ulimit patches aren't a bad idea to solve your
privilege problem. At that point, is there still a need for
rt_cpu_limit?

Nick

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