waveform charts slowed down control system while loop

[suni]

Hi

In my application, I have control system which i acquire data, process and output the result. I placed some waveform charts in the while loop where i acquire data, process and output. This made while loop to miss data points( late). Is this because waveform charts store data as time passes?

[altenbach]

Waveform charts store data in a history buffer of configurable size. You can change it to a smaller number.

• What is the size of the history buffer?
• How many charts are you updating in your loop?
• What else is happening in your loop?
• How are you updating them (wire, local variable, value property, etc).
• How fast is your loop rate?
• Are your plots simple (thin lines) or fancy (e.g. large dots and thick lines)?
• Is autoscaling on or off?
• Are the charts set to "synchronous display" by accident?
• How many traces are on your chart?
• What is your LabVIEW version?
• What is your OS?
• Do you have overlapping elements on the front panel?

Could you attach a simplified version of your code so we have a better idea what you're actually doing?