How do they know their current fps?

[Guest]

Fraps shows you the average framerate while FS X shows you the current fps. Hence the difference. You can edit a specific FSX-cfg so FS X will show you the average framerate (instead or also, just what you want: there is a link on this forum somewhere to a blog that shows you all the things you can see when you press Shift-Z, which is a lot!)

[Guest allcott]

>Fraps shows you the average framerate while FS X shows you>the current fps. Hence the difference. You can edit a specific>FSX-cfg so FS X will show you the average framerate (instead>or also, just what you want: there is a link on this forum>somewhere to a blog that shows you all the things you can see>when you press Shift-Z, which is a lot!)More importantly, adding the min/average/max scale also introduces the scale which is actually more important than the instantaneous fps - the percentage variation. Big percentage (no matter what the fps is set to) = display problems.The following article is related to the imminent arrival of the new generation of 100hz LCD displays, but contains some technical explanations as to why the fps is actually pretty meaningless, except in the general performance sense, and how the interraction of the in-game fps and the monitors refresh and update rate has NOTHING to do with old cinema technology.http://www.behardware.com/articles/641-1/1...-afterglow.htmlAllcott

[Noel 4,484]

>I agree with everything you are saying except the part about>viewing in frames.>>When the human eye receives light from a seen, a reversible>chemical change of a substance (I think it is called>rhodopsin) on the retina occurs. The chemical change then>causes an electrical impulse to be sent to the optical center>of the brain through the optic nerve. After a very tiny>fraction of time the chemical reaction involving the rhodopsin>is reversed and the eye is ready for another photon. This>amount of time can be considered as a frame since during this>time any light hitting the retina does not cause any>electrical impulses (because the retinal chemical has been>altered) to be sent to the brain to create an image.Sounds more like a refresh rate than a frame. :()Noel

[yellowjack 28]

Thanks for the link Allcott, it was a good read. The article demonstrates, in my reading, that the sim FPS is only part of the equation and that motion is a major aspect of the perceived display fluidity. This all begs the question of how to measure FSX performance in terms of optical perception. I guess that most users have a need to find out if their flightim performance is the best that can be gleaned from their hardware and software setup. If one runs a straight benchmark it can be compared with others results and equipment setup against the same benchmark. However, the number of variables in a flightsim are so many that it has been nigh on impossible for users to ask themselves if their equipment is giving the best performance possible in flightsim and is it satisfactory.There can be little doubt that users will continue to run threads in the forum solely under the FPS performance banner even though, as suggested, FPS is only a bit player in the perceived performance equation.John

[jeffhunter 0]

Personally, I wish I had never learned the ctrl-z keystroke combo, as I have thereafter been on the treadmill of upgrading and tweaking (and blaspheming).:-mad :-fume :-grr :-hangIf only I could just STOP NOW and enjoy flying. Jeff

[Guest AkeldamaUK]

24fps works in movies because each frame features everything that happened in that 1/24th of a second (okay there's shutter time and stuff, but for the purposes of this discussion this figure will do). If something moves quickly than this motion is captured as a blur.A game running at 24fps depicts 24 distinct freeze frame images per second. That's why 24fps isn't really smooth enough for a game - at least a game where a vehicle may have moved several metres in that time.Frame rates of 60fps are desirable because there isn't the motion blur that fools our eyes when watching movies. We need a higher number of freeze frames per second to get anything like the same smoothness that 24fps movies give.That said, I'm totally happy with 30fps if it's fixed. It's frame rates fluctuating that annoy me.