Thanks for the info on VxWorks.
> Not being up-to-date on Linux (and assuming traditional Unix), I
> don't know how to get fine-grained control over process priorities
> in the 'linux' part of RT-Linux. Typically, 'nice' is all that
> there is, and it's not good enough. Often one wants the
> 'functionality' available in the Linux OS, but at a bit higher
> priority than, say, sendmail :-)
The Linux side supports (I found out recently) a soft-real-time
scheduling: you can give a process an absolute high priority so the
process is interrupted only by interrupts and higher-priority processes
(see sched_setscheduler(2)). Also, latencies are introduced by drivers
that disable interrupts.
Marko
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Marko Rauhamaa [EMAIL PROTECTED] (818) 878-6314
Sr Project Engineer http://www.tekelec.com/ Tekelec Inc
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