Need help controlling process priorities and sync

New Message Reply Date view Thread view Subject view Author view

Gullen Jim (Jim.Gullen++at++mtv.gtegsc.com)
Tue, 5 Nov 1996 10:23:00 -0800

Fellow Performers,

Thanks in advance for your valued help!
I have perhaps bungled my efforts at utilizing
non-degrading priorities, "nice", etc to establish and control
process priorities.

My resources are:
        1-pipe, 2-cpu Onyx RE2
        IRIX 5.3
        Performer 2.0

My question is simply
How can I guarantee that my front-end simulation executes
at a lower priority than draw, cull, AND app?

By this I mean that the sim must be *immediately* pre-empted
by Unix whenever draw, cull, or app request cpu control.

Specifically, and ignoring non-preemptive low-level i/o
on behalf of the sim, how do I guarantee that the app can
immediately resume upon completion of a pfSync or pfFrame
event, do its thing, then yield the cpu (to an awaiting lower
priority process) in initiating its next event wait?

 P.S. I have read the archives from '93 to present, so if I've
missed the obvious, please feel free to direct me there.
============================================================
Jim Gullen
Software Engineer
GTE Government Systems
1805 West Drake Drive
Tempe, AZ 85283
Tel: 602.777.1724
Fax: 602.777.1717
EMail: jim.gullen++at++mtv.gtegsc.com
============================================================

=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
            Submissions: info-performer++at++sgi.com
        Admin. requests: info-performer-request++at++sgi.com

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:53:53 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.