Gullen Jim (Jim.Gullen++at++GSC.GTE.Com)
Fri, 11 Apr 1997 09:03:00 -0700
> "... From the
> results, it appears that I can clear up to 22 channels at 60Hz and beyond
> that it drops to 30Hz. This test was performed with a 2cpu R10k, 1 RM-7."
Assuming your 22 channels are same-sized, non-overlapping and cover
an entire 1280x1024 screen,
1) The clear time per channel would be
CT1 = 16.7/ n1;
n1= number of times you can clear 1 chan in 16.7 msec
2) The overhead per channel would be
OH1 = CT2 - CT1 or OH1 = CT22 - CT1
CT2 = 16.7/n2
CT22 = 16.7/n22
n2 = number of times you can clear 2 chans in 16.7 msec
n22 = number of times you can clear 22 chans in 16.7 msec
I strongly suggest you employ "eyeball" timing instead of the stats
display
for this type of "gross" timing. Just put the viewpoint into a heading
loop of 5
deg/loop and manually increment the number of clears until ...
Of other interest the clear times on our RE2 run 4-6 msec (normal) down
to
2.1 msec (fast tag) for 1 channel spanning an entire 1280x1024 screen.
Jim Gullen
GTE Government Systems
1805 W. Drake Dr.
Tempe, Az, 85283
voice: 602/777-1724; email: jim.gullen++at++gsc.gte.com
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