[EMAIL PROTECTED] a �crit :
>
> Hi Massimiliano,
>
> the term "rate monotonic scheduling policy" is misleading, since
> "rate monotonic" is mostly a scheme for task priority assignment.
Yes, but rate monotonic scheduling also need a hardware timer. This
Timer is used to generate periodic interrupt which is used by task
switching mecanism.
It's possible to implement a rate monotonic scheduller over RTLinux but
RTlinux itself don't support directly this policy.
But it's true that task priority must be staticaly assigned according to
rules defined by J.Goodenough & L.Sha in 1989.
>
> To use this scheme, the scheduler must support the following
> features:
> - priority based scheduling
> - fixed priorities
> - preemptive scheduling
>
> Hence, the FIFO-scheduler of RT-Linux is suitable for an
> application that uses rate monotonic priority assignment.
>
> Ciao,
> Bernd
> > -----Original Message-----
> > From: Massimiliano Cialdi [mailto:[EMAIL PROTECTED]]
> > Sent: Dienstag, 12. Marz 2002 09:49
> > To: rtl
> > Subject: [rtl] rate monotonic
> >
> >
> > reading
> > http://www.fsmlabs.com/developers/white_papers/thesis.ps it
> > seems that
> > rtlinux directly support rate monotonic scheduling policy? It
> > is right?
> > So why the only scheduling policy selectable with
> > pthread_setschedparam are FIFO
> > and RR?
> >
> > thanks
> > --
> > Massimiliano Cialdi
> > [EMAIL PROTECTED]
> > [EMAIL PROTECTED]
> >
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> >
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