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

Nick Piggin
2008-08-26T09:45:05Z

On Tuesday 26 August 2008 19:30, Ingo Molnar wrote:
> * Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> > So... no reply to this? I'm really wondering how it's OK to break
> > documented standards and previous Linux behaviour by default for
> > something that it is trivial to solve in userspace? [...]
>
> I disagree

Disagree with what? That it's a problem to basically break the guarantee
realtime SCHED_ policies have previously provided?

> and what do you mean by "trivial to solve in user-space"?

I mean that if some distro has turned on the RT scheduling ulimit by
default and now finds themselves with a local DoS for unpriviliged users
as a result, then either that distro should just make their init scripts
set the throttle and break the API themselves, or they should start a
watchdog at a higher priority than unprivileged user can set.