Sharon Clay (src++at++rose.asd.sgi.com)
Fri, 24 May 1996 12:16:55 -0700
->Running my application in free run mode I use pfStat to know how many
->frames per second I get. In full screen I get 7 frames/sec (slow
->Indy...) but the actual time for each frame is 328ms (according to
->pfStat also). 328x3=1000ms.
->
->I should get 3 frames/sec! Why do I get 7 frames/sec??
->
->Besides I can easily see that it is only refreshing at around 3 times a
->second. Why does it say 7 frames/sec?
->
Are you MP? If so, frame time is more a measure of total latency
(though due to a bug in 2.0 it does not include the time waiting for the
final vertical retrace period where swapbuffers can actuall happen).
If you are MP, your frame rate will be determined by your draw process time.
Sorry about the confusing labeling.
We can check the frame/sec number with the shell command: /usr/sbin/osview.
Have that be the only graphics program on your screen and rlogin from another
machine and run osview. Look at the swapbuffer counds under the
graphics section and see what you see.
src.
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Sharon Rose Clay (Fischler) - Silicon Graphics, Advanced Systems Dev.
src++at++sgi.com (415) 933 - 1002 FAX: (415) 965 - 2658 MS 8U-590
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