RTLinux on UP synergy boards is rock solid -- or at least it was not so
long ago.
SMP is waiting for time/money/interest.
On Sat, Jun 24, 2000 at 08:27:46AM -0700, al lykken wrote:
> 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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---------------------------------------------------------
Victor Yodaiken
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