I'm involved in a new project where we plan to use dual Power PC Synergy
SBCs running
Yellow Dog LINUX. Since RT Linux doesn't seem to ready for prime time I
have been trying
to do deterministic scheduling with the existing system, with some
success. So far I:
1. Changed my HZ from 100 to 1000
2. Set the running thread priority to 90 with sched_setscheduler
3. Locked the task in memory with mlockall
4. I used the interval timer, setitimer to do my scheduling
I am able to get tasks to down to ~1 ms. And as lone as nothing else is
going on it is solid as a rock
The problem is that when another process is started, any access to disk,
etc I blow my frame,
where I get burps out to 10 - 30ms.
Is there anything else I might do to make my task more deterministic and
is there any hope for RT Linux
with Synergy (PPC).
Thanks......Al
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For more information on Real-Time Linux see:
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