Re: Performance problems

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F. KUIJPER 446/3H06/2-5 (Kuijper++at++fel.tno.nl)
09 Jun 95 16:31:01 EDT

> On Jun 7, 10:02am, F. KUIJPER 446/3H06/2-5 wrote:
> > Subject: Performance problems
> > I'm having problems with getting good performance from my Performer
> > based simulation application.
> > [ ... ]
> > Running the application on a 8 CPU Onyx (IRIX 5.3, Performer 1.2)
> > with RE2, 4RM, everything seems fine: 60 Hz most of the time. UNTIL
> > you start to touch the system. Scrolling an X-Window on the system
> > will essentially STOP the Performer application... Avarage frame rate
> > drops below 10 Hz, even down to 1 Hz. Sometimes (when heavily
> > scrolling an X-window e.g.) I see the visual process wait for half a
> > second or more.
>
> Perhaps you should try running this app as UID "root". Does the same
> problem then occurr? This is one way to avoid the usual degradation of
> CPU scheduling priority, caused by IRIX. (eg: man nice).
>

Thanks for your response. Yes, I do run as root. The processes are real-time processes, so the
nice level does not apply.

Anybody else an idear?

Frido Kuijper
TNO Physics and Electronics Laboratory
P.O. Box 96864, 2509 JG The Hague
The Netherlands
Phone +31 70 3264221
Fax +31 70 3280961
email frig5++at++fel.tno.nl

  

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