On Sun, Jun 25, 2000 at 10:49:11PM +0200, Bernhard Kuhn wrote:
> [EMAIL PROTECTED] wrote:
> >
> > We have an experimental RTL V3 with an option to turn off Linux
> > on one PC. Measured latencies are very low -- but this is early code.
> > If you are interested in testing please send email to me.
>
> Very interessting!
>
> I�d like to have a look at it, because i intend to
> modify the kernel-scheduler in the following way
> (if i ever have enough time to do so :-) )
>
> o user-spaces processes, kernel-threads and linux-interrupts
> should be fixable to specific CPUs.
Ingo did Linux interrupts already for 2.3 x86. The others should be easy.
BTW: We are under enormous pressure from potential funders who argue that
we need to abandon open source entirely to keep Lineo from simply riding
us down. I expect RTAI in the future will have done PPC ports
before RTLinux and etc. I'm attempting to manouver around both this problem
and funder demands. We will see.
> o Additionaly to the usual time-sharing "nice-value", a
> priority is assigned to user-space processes, resulting
> in somewhat i would call a "hierarchical priority encoded
> preemptiv time sharing scheduler" :-)
I have a solution to this, but [see above]
> This surely wouldn�t apply to machine control systems, but
> is intended for multimedia (happy fragging!) ... i know
> that there are several other projects out there, that care
> especialy about the second point (red linux, qlinux),
> but AFAIK, nobody cares about the first one ...
RedLinux contains RTLinux 0.9 code, I don't know the others. But [see above]
>
> BTW: how was you talk in San Jose?
Packed. Very interesting.
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