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Echtzeit - the leidige Topic?

 
Echtzeit - what heist the eigendlich ifs thereby circa software goes?

Echtzeit means NOT the something liquid or fliessend expires, or quite quick or slow. Echtzeit means for Programmer sooner, that it worry carry must that the program on each computer apparently in the same speed expires.

now Gibts but slow and fast computer, the a computer creates only 1 fps, another 10. If I means a ball fly let and say the it itself per Frame (durchlauf) circa a Pixel moving should, then runs the ball on unterschiedlichen Rechnern different quick. No Echtzeit!

Echtzeit means hierbei z.B., the one schaut How quick the computer operates - and the Schrittweite the Balles anpasst.

But this is not at all so simply - of my opinion to Gibts here different Lösungsansätze which but any to and detriments having. one could z.B. each second look How many Frames geschafft get, and the Schrittweite the Balles adjust. but sekündlich? Reicht the? No, it sees awful from. objectively must one look How long the latest Frame lasting - and each Frame The Schrittweite new to charge. but is the then always liquid? No - unfortunately neither. The ball would sometimes hopsen. means must one Dämmer since.

anyway, I Have the time here in this miniDemo displayed. the Window is skalierbar around the FPS To reduce - because the BitBlit need Yes longer (More cpu) so larger the window is. The ball ought to nevertheless, alike How big The anzeigefläche is, verhältnismäßig always The right speed stick to - so well It's all right.

I have to too a class built - heist FPS. whom Source Gibts later - if at all interest on it exists. The class have I me eigendlich built circa 3D-Apps - How z.B. WalkEngines in Echtzeit run out To let. Hierbei is it nähhmlich particularly important! the BallDemo is only to that Test.

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01/10/07  
 




Jörg
Sellmeyer
by me zeigtes always ca. 866 fps. whether the so correctly. is ?
 
Windows XP SP2 XProfan X4
... und hier mal was ganz anderes als Profan ...
01/10/07  
 




Michael
Wodrich
by me shrug it with 850 fps.

there question I wieso iFs letztes Testprogramm of what one fps lied has and not started...

Best wishes
Michael Wodrich
 
Programmieren, das spannendste Detektivspiel der Welt.
01/11/07  
 




RGH
On my job-computer in the firm come I only on 45 fps (has hold only graphic OnBoard) and the ball fly always gleichschnell ums Eck.

(BTW: the latest demonstration let itself too by me To dwell with the display 1.00000000 fps not started ... neither, as i a better Grafikkarte installed having. mandatory well yet einanderes trouble drin been his.)

Greeting
Roland
 
Intel Duo E8400 3,0 GHz / 4 GB RAM / 1000 GB HDD - ATI Radeon HD 4770 512 MB - Windows 7 Home Premium 32Bit - XProfan X4
01/11/07  
 



by me flackert The display between 880 + 1000 fbs - the ball runs but always same - Grafikprocessor: GeForce FX 5500
 
01/11/07  
 



@Jörg: hang from the Fenstergröße ex, the window is skalierbar.

@Michael: the a is reines BitBlit, the others was OpenGL.
 
01/11/07  
 




Jörg
Sellmeyer
iF
@Jörg: hang from the Fenstergröße ex, the window is skalierbar.


very, this is already clear - but are it really Frames by second those showing or something other?
 
Windows XP SP2 XProfan X4
... und hier mal was ganz anderes als Profan ...
01/11/07  
 



there are frames by Second!
 
01/11/07  
 




RGH
Hi,

I have it now To dwell ausprobiert (NVIDEA 6200 with 128 MB). the behaviour is strange: If I the program starte, have I first of all a display of around the 600 fps (swaying so between 5xx and 7xx). once I the window but too only unmerklich larger or small (!) ziehe, weg The fps on ca. 50 back. make I it integrally small, soar on about 100 on, vergrößere I it maximum (1280 * 1024), weg tappt im dunkeln on 15 - 20 back.

Greeting
Roland
 
Intel Duo E8400 3,0 GHz / 4 GB RAM / 1000 GB HDD - ATI Radeon HD 4770 512 MB - Windows 7 Home Premium 32Bit - XProfan X4
01/11/07  
 



Maximiert have I 10fps, ca 64x64 have I 600fps, with Start have I 70fps.
 
01/12/07  
 



have here new demonstration. If one on take clicking becomes the TextBox the actually Result added.

simply a couple Results produce and the Text here post. think so ists plainer.

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Results:
1024x768=~15 Fps
1024x768=~14 Fps
1024x768=~14 Fps
1024x768=~14 Fps
1024x768=~14 Fps
1024x768=~14 Fps
1024x768=~13 Fps
1024x768=~13 Fps
1024x768=~13 Fps
79x302=~235 Fps
79x302=~224 Fps
79x302=~246 Fps
79x302=~262 Fps
79x290=~274 Fps
79x290=~280 Fps
320x320=~52 Fps
320x320=~56 Fps
640x480=~31 Fps
640x480=~29 Fps
1024x768=~15 Fps
1180x948=~10 Fps
 
01/12/07  
 




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