thread ? elapsed time

Because Console.Writeline and while(1) themselves takes time.

Because Console.Writeline and while(1) themselves takes time.

Can I do something to abtain information every 40 ms

Audrey wrote:

Please why when I write :
while(1){
Console.writeln("date= {0:HH:mm:ss.ffff}", DateTime.Now);
System.Threadind.Thread.Sleep(40);
}
I obtain
date= 16:04:35.6250
date= 16:04:35.6718
date= 16:04:35.7187
date= 16:04:35.7656
...

Instead of :
date= 16:04:35.0040
date= 16:04:35.0080
date= 16:04:35.0120
date= 16:04:35.0160

Thanks for your informations

Audrey

Because the timing of the execution of a threads is unpredictable. You
have other code running besides the Sleep. The JIT compiler and
garbage collector will consume some time. Windows can preempt threads
at anytime. And that's just to name a few. There's probably a billion
other reasons that I don't even know about.

Brian

So I don't have solution to obtain information every 40 ms ?

System.Threading.Timer. Your still not going to be exact, maybe within
+-10ms.

--
William Stacey [MVP]

"Audrey" <Au*************@ifrance.com> wrote in message
news:11**********************@j55g2000cwa.googlegr oups.com...
| So I don't have solution to obtain information every 40 ms ?
|

Audrey wrote:

So I don't have solution to obtain information every 40 ms ?

Well, I'm not sure. You could look into multimedia timers. I have no
experience with them, but I do know they're suppose to offer better
resolution then other techniques.

thanks ok I go and try it

thanks ok I go and try it

multimedia timers refer to System.Threading.Timer ?

"Audrey" <Au*************@ifrance.com> wrote in message
news:11**********************@u72g2000cwu.googlegr oups.com...
| multimedia timers refer to System.Threading.Timer ?
|

No, MM timers are Winmm.dll exported functions. Anyway, you don't need to
experiment with these, it's simply no possible to put a thread asleep for a
precise amount of time in Windows. The closest you can get is the
"sleep-time" +/- RTC clock interval(10 msec or more).

Willy.