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

[Ingo Molnar]

* Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:

> But the important elements are lost. The standard provides a
> deterministic scheduling order, and a deterministic scheduling latency
> (of course this doesn't mean a great deal for Linux, but I think we're
> good enough for a lot of soft-rt applications now).
> 
> >  [1] http://www.opengroup.org/onlinepubs/007908799/xsh/realtime.html

no, the patch does not break POSIX. POSIX compliance means that there is
an environment that meets POSIX. Any default install of Linux 'breaks'
POSIX in a dozen ways, you have to take a number of steps to get a
strict, pristine POSIX environment. The only thing that changes is that
now you have to add "set RT_CPU ulimit to 0 or 100" to that (long) list
of things.

	Ingo
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