Article View: comp.sys.sun
Article #8363Process "Class": Timesharing or Realtime; Is this for real?
From: Paul Evan Matz
Date: Wed, 05 Jun 1991 14:17
Date: Wed, 05 Jun 1991 14:17
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2088 bytes
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 |
| RR 2, Box 55, 26 Lewis Road, Pound Ridge, NY, 10576 |
| Phone: 914-234-0745, or 914-234-0661 |
| (in KS:) |
| PO Box 15955, 16505 W. 113 Street, Lenexa, Kansas 66215 |
| Phone: 913-894-7500 x7179 Fax: 913-894-7600 |
| email: {...}!uunet!bmskc!paul or paul@bmskc.ppg.com |
|____________________________________________________________|
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!cunews!bnrgate!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request From: bmskc!oz!paul@uunet.uu.net (Paul Evan Matz) Newsgroups: comp.sys.sun Subject: Process "Class": Timesharing or Realtime; Is this for real? Keywords: No Digest Subjects in Unmoderated Mode Message-ID: <3601@brchh104.bnr.ca> Date: 5 Jun 91 14:17:00 GMT Sender: news@brchh104.bnr.ca Organization: Sunspots, Pseudo-Unmoderated Lines: 33 Approved: sun-spots@rice.edu X-Original-Date: Fri, 24 May 91 14:07:06 EDT