Angus Dorbie (dorbie++at++multipass.engr.sgi.com)
Thu, 4 Sep 1997 10:14:24 -0700
Cheers,Angus.
On Sep 3, 3:12pm, Jan Barglowski wrote:
> Subject: Framerate on iR...
> Hi!
>
> I'm trying to optimize my framerate. At 30Hz PFPHASE_LOCK my app
> runs well, but about every 2 seconds the stats display "jumps"
> and I consistently get 2-4 misses shown in the stats window. For
> the app/cull/draw misses, there are zero misses shown.
>
> Now the fun part. I run the app at 60Hz PFPHASE_LOCK and I get
> the exact same symptoms: 2-4 misses and none shown for each of the
> processes. Thinking it was my program, I then ran "perfly esprit.flt"
> and got the same statistics.
>
> I checked the pfFrameStats and set PFFSTATS_UPDATE_FRAMES to 0 as
> shown in the Performer Guide, but I still get the jump ~2 second
> intervals.
>
> Setup: 12cpu iR, IRIX 6.2, Performer 2.1, running programs as root
> with non-degrading priorities and locked-down CPUs. My app can easily
> run 60Hz (well, I disabled preFrame() and postFrame() for these tests ;-)
>
> Any ideas?
>
> jan
>
> --
> Jan Anthony Barglowski jan++at++chinalake.navy.mil
> Real-time Computer Graphics http://www1.ridgecrest.ca.us/~jan
> Naval Air Warfare Center, China Lake (619) 927-1057
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>-- End of excerpt from Jan Barglowski
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