Jan Barglowski (jan++at++euryale.chinalake.navy.mil)
Wed, 3 Sep 1997 15:12:48 -0700 (PDT)
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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