VI laggy

Question

Hi, I am rather new to LabView however having fun trying new things.
I recently worked on a mcb2300 board and found that the VI was laggy.
For example if I had a dial on the VI then anytime I went to change the dial value, it would lag or jump around slightly.
Has anyone came across this and if so is it native due to communication between labview and the hardware? or is there something I am missing that I could use to sort this.
Regards,
jmcall10

Answer 1

jmcall10 wrote:
Excellent! I shall have a look over next few days. I shall see if i can get it to work accordingly.
Thanks a lot.
Jmcall10
First of all I made the assumption that you had an event structure which may not be true at all. Secondly I said "tight loop" with a misconception of what that means.
To me it meant that you have a loop doing very little or doing one specific thing (like containing an event structure). But a tight loop is not a good thing at all. It means the same thing as a "greedy loop" which can only be described as Bart Simpson repeatedly asking "Are we there yet?" "Are we there yet?"....
It is definitely a more likely possibility that you do have a tight loop than an event structure. What I was getting at is that if you use an event structure then everything is completely blocked until the code in the event case has completed. You cannot interact with the front panel. If you are communicating with hardware in the event structure and the hardware takes a long time to respond you will see laggy behavior. That can be turned off by deselecting "Defer Front Panel Updates" but if you ever find yourself doing that then you are probably doing something wrong.
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LabVIEW 2012