Stats Question correction

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Jay Gischer (gischer++at++puget.engr.sgi.com)
Fri, 3 Apr 1998 11:47:19 -0800 (PST)


Yesterday I posted a response to a question about stats for a
multi-channel, single pipe configuration.

The stats for the channel were reporting something like this:

frame=50.7 app=3.5 cull=5.7 draw=9.2 isect=2.3

The question I got wrong was the interpretation of the "frame" stat.
This figure is in fact the channel latency, i.e., the length of time from when
the frame first enters the APP stage to the time when the DRAW stage
completes. I erroneously reported this as rather the period time of the draw
stage. So the numbers are not supposed to add up at all.

In more recent versions of Performer the term "frame" has been replaced with
"latency".

------------------------------------------------------------------------
Jay L Gischer + "I see great things in baseball. It's our game.
Advanced Graphics + It will repair our losses and be a blessing to
Software + us."
Silicon Graphics + -Walt Whitman
(415) 390-4277 +
gischer++at++sgi.com + "A life has no meaning except in the impact it
                     + has on other lives"
                     + -Jackie Robinson

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