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

[Ingo Molnar]

* Chris Wright <chrisw@xxxxxxxx> wrote:

> * Ingo Molnar (mingo@xxxxxxx) wrote:
> > well, there's setrlimit, so you could add a jackd client callback that
> > instructs all clients to change their RT_CPU_RATIO rlimit. In theory we
> > could try to add a new rlimit syscall that changes another task's rlimit
> > (right now the syscalls only allow the changing of the rlimit of the
> > current task) - that would enable utilities to change the rlimit of all
> > tasks in the system, achieving the equivalent of a global sysctl.
> 
> We've talked about smth. similar in another thread.  I'm not opposed
> to the idea.

did that thread go into technical details? There are some rlimit users
that might not be prepared to see the rlimit change under them. The
RT_CPU_RATIO one ought to be safe, but generally i'm not so sure.

	Ingo
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