Re: [PATCH 6/6] sched: disabled rt-bandwidth by default

Peter Zijlstra
2008-08-29T08:06:35Z

On Fri, 2008-08-29 at 09:56 +0200, Mike Galbraith wrote:
> On Thu, 2008-08-28 at 14:53 -0400, Steven Rostedt wrote:
> > On Thu, 28 Aug 2008, Linus Torvalds wrote:
> > >
> > > And I'm not really interested. Quite frankly, I suspect the "we want to
> > > run something like pulseaudio with RT priorities" camp is the more common
> > > one, and in that context I understand limiting SCHED_FIFO sounds perfectly
> > > understandable.
> >
> > The fact that it actually limits a SCHED_FIFO task group, over a single
> > task thread does bother me a little.
>
> It bothers me some too. You have to patch/re-compile the kernel if you
> need to turn it off and don't have SCHED_DEBUG enabled (not free).

/proc/sys/kernel/sched_rt_{runtime,period}_us don't require SCHED_DEBUG.
If they are in any way non-functional on SCHED_DEBUG=n then that's a
clear bug.