Process "Class": Timesharing or Realtime; Is this for real?

[Paul Evan Matz]

Newsgroups: comp.sys.sun
Distribution: na
Keywords: process class, realtime, realertime

At an Sun OEM developer's conference in the spring of 1990, there was
panel discussion which touched on some impending SunOS/SysVR4
functionality regarding "realer time" aspects of processes.  As I
recall, the plan was to allow classification of processes as either
"Timesharing" or "Realtime";  Timesharing processes would be like the
garden variety Unix process.  They get pre-empted after their slice of
CPU time.  Realtime processes were to be prioritized (20 levels), and
would be allowed to run until they blocked.  I don't remember if a
higher priority process became ready while another was running whether
the current process was pre-empted.  Sounded kind of interesting.

I was wondering what the current state of this functionality is.  Can't
seem to find anything in the 4.1.1 manpages that refer to this.  Is it
in SVR4?  Am I dreaming?

Thanks (wishful thinking).

Regards,
 ____________________________________________________________
| Paul E. Matz, Principal Engineer, PPG Biomedial Systems    |
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