Paul,
Good to see someone in the industry talk in terms of time based
scheduling. I have been working on developing a time driven scheduler for
a message passing library (MPI/RT) on rtlinux. MPIRT requires time
driven support, and I couldnt find ANY operating system that had that
built in, (except RT-Mach.. but it is.. Mach.) RT-Linux had the EDF
scheduler by Ripoll. I started from that and am modifying it to be
more like the Mach resource reservation model.
One of the few people I talked to, who are in the RTOS industry, said
their customers never ask for time-based, so they dont bother. So do you
guys actually use time based scheduling? What embedded OS allows you
to schedule according to prescribed deadlines, and worst case compute
times to be able to give guarantees against failure? Who measures worst
case compute times for the rt tasks ?.. how?
:)
lotsa questions
Manoj
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MANOJ APTE -----------(o)----------- 500 Louisville St, #59
High Performance Computing Lab Starkville, MS 39759
phone: (601) 325 7503 phone: (601) 323 8160
Engineering Research Center. email: [EMAIL PROTECTED]
phone: (601) 325 2476 http://www.erc.msstate.edu/~manoj
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