Subject: Re: Further scheduler changes
To: Garrett D'Amore <>
From: Cherry G. Mathew <>
List: tech-kern
Date: 09/19/2006 14:47:30
On 9/19/06, Garrett D'Amore <> wrote:
> Daniel Sieger wrote:
> > Hi,
> > I spoke to some faculty staff this morning and I'd have the chance to
> > work on the NetBSD scheduler as a part of my course of studies. Within
> > the scope of this project I think I could manage to design and
> > implement the above mentioned abstract scheduler framework and at
> > least one additional scheduling scheme. Before starting to work on
> > this I would need to know if such a framework is wanted by the
> > NetBSD project and how chances are that the framework could be
> > integrated into the source tree, given reasonable stability and
> > performance.
> >
> > Regards,
> > Daniel
> >
> >
> I think it would be cool.  Solaris' scheduler framework is very nice,
> and one of the things they do is have an "interactive" scheduler class,
> where the top most window (whatever has focus) gets a slight priority bump.
> I can also imagine that having fixed priorities could be useful for
> certain classes of embedded application.

Since you're re-examing the guts of the current scheduler, it might
make sense to arrange (or design the interface for later work) to have
a "pluggable scheduler", which can be changed while the system is up.