statistics Question

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Sam Chu (c00chu00++at++nchc.gov.tw)
Mon, 30 Mar 1998 11:19:14 +0800 (CST)


Dear Performers:

  In Perfly statistics I got: (two channels one pipe)

  30/30 Hz
...
  MSecs: frame=50.6 app=3.7 cull=8.0 draw=6.7 isect=3.2
  Frames=60 Misses: total=0 app+cull=0 draw=0

another channel
  MSecs: (almost the same as the above)
  Frames=61 Misses: total =61 app+cull=0 draw=0

Question:
  1. why app+cull+draw+isect much small than frame?
  2. why 50.6(frame)*30Hz > 1000 MSecs(1 Sec)?
  3. then what "frame:" means in "MSecs: frame=50.6"?
  4. What Misses means? Does it mean how many frames Performer drop?
  5. Why in one channel Misses=0 and another Misses=61?

Thank for any reply in advanced.

   
Sam Chu
National Center for High-Performance Computing
Scientific Visualization Lab Email: c00chu00++at++nchc.gov.tw
Tel: (886)35-776085 Ext 248 Fax : (886)35-773538
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