Re: [Algorithms] Timing problems

[Paul at H. <pa...@ru...>]

Jackpot!  Many thanks, Jan.

Regards,
Paul Johnson.


----- Original Message ----- 
From: "Jan Wassenberg" <jan...@gm...>
To: "Game Development Algorithms" <gda...@li...>
Sent: Sunday, January 04, 2009 12:39 PM
Subject: Re: [Algorithms] Timing problems


> Hello,
>
>> I'm using QPC. Trouble is my timers seem to be a bit grainy and nasty.
>> They still seem to keep accurateish time overall, but the samples I'm
>> making each frame vary a lot more than they used to. I think - it's
>> actually hard to debug this stuff hence me begging for previous fixes :)
>
> I have developed a workaround that uses HPET hardware (a >= 10 MHz counter
> without the annoying flaws of other timers) by means of a mostly user-mode
> driver.
> The source code, a demo app and an accompanying article explaining the
> available timers and their problems are available at
> http://www.stud.uni-karlsruhe.de/~urkt/timer_test.zip [1.7 MB]
> Comments and suggestions are welcome.
>
> Cheers
> Jan
>
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