Elapsed Time

[Random]

Out of curiosity (mainly to experiment with different techniques),
what is the easiest way to guage elapsed time? The smaller the
increments, the better. I am attempting to see which code runs faster
on a few of my "learning workbooks".


Thanks for any help with this matter.


Random

 

[Myrna Larson]

The precision of the built-in Timer function is (AIR) about 0.05 seconds -- probably not
adequate for a single iteration of a routine. Charles Williams has code for a microsecond timer
"class". I think the url is www.decisionmodels.com.

 

[Tom Ogilvy]

http://support.microsoft.com/default.aspx?scid=kb;EN-US;172338
HOWTO: Use QueryPerformanceCounter to Time Code

actually provides several different approaches.

 

[Random]

Perfect. Thanks a lot.

Random

 

[Tom Ogilvy]

The class Myrna Refers to at Charles' site uses the QueryPerformancCounter
method - so if you want to see a sample implementation, that would be a
source.

It is at the bottom of his downloads page:
http://www.decisionmodels.com/downloads.htm