Subject: Re: Hard realtime scheduling
To: SODA Noriyuki <>
From: Dave <>
List: tech-kern
Date: 04/04/2005 11:21:23
On Mon, 4 Apr 2005, SODA Noriyuki wrote:

> >>>>> On Mon, 4 Apr 2005 12:02:07 +0200 (CEST),
> 	Hubert Feyrer <> said:
> > I don't know about any details in NetBSD, but the way to go is probably to
> > make the kernel preemptive as first step. This will also (hugely) benefit
> > SMP performance (i.e. no more biglock).
> mm, first step.
> I think this is really hard step, although it's worth consindering.
> Adding realtime (fixed priority) scheduling class to our scheduler is
> worth doing, and far easier than preemptive kernel.

As I stated earlier, realtime scheduling, especially not requiring root
access, will be a boon to good quality audio support.  I'm hoping that
we'll have something that can be used by JACK.  I never got any comments
on this at the time.  Can I get some now?

David Griffith