frequency while loop?( with no waiting time )

[marc france]

Hello,

I am using a while loop with no waiting time inside. Could anyone tell me how often does the loop do its iteration in that case?

Thanks a lot,

Marc

[becktho]

Hello Marc

This depends on different things e.g. CPU, other running programs ...

But try to use the while loop with a waiting-time inside otherwise processor load caused by your program increases highly.

Thomas

[tst]

If you don't put a wait function, the loop will run as fast as it can. If you right click on the i terminal in the bottom left corner of the loop, and select Create>>Indicator from the pop-up menu you'll have an indicator that shows the number of iterations and you'll see the number will get big fast. This isn't a good thing to do, because this way the loop will take all the resources it can get and leave nothing for other programs.

[marc france]

Hi tst,

Thanks for your answer. I'll try with a waiting time of 10 mS then.

Marc

[marc france]

Hi Thomas,

Thanks for answering. I'll try with 10 mS waiting time.

Marc

[johnsold]

It is not well documented, but zero ms wait is valid. Putting a Wait ms function in the loop with the wait value = 0 will cause the internal LV scheduler to check to see if any other node in the program is ready to run (data available at all inputs). If other nodes are ready to run, they will execute. If none are ready, the loop will iterate agin immediately. This is the best way to rapid execution of a loop while allowing parallel parts of the program to execute before the loop finishes.

Lynn

[marc france]

Hi Lynn,

Thanks a lot for that info, I'll try that too.

Marc