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CPU Load at RT Loop varies every time

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Hi,

I have a simple CAN Read Node in a RT Loop which runs on an sbRIO.

The CPU Load is at about 5-10%.

When I stop the VI and start it again, it sometimes goes up to 90% on one core.

Has anyone ever had such a problem?

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Message 1 of 6
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Hi,

 

you have to put a sleep (with for example 250ms) somewhere into the while loop, please take a look into the attached image.

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Message 2 of 6
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Hi Kevin,

This is a Timed Loop. The delay is set in the loop Settings.

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Message 3 of 6
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Although this is a timed loop, I think you need to sleep for a while.

I can't explain why, but for me it mostly fixes this problem

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Message 4 of 6
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Hi nicolaus33,

are you still struggling with this issue?

If so, could you please write a little bit more about your project or perhaps share it? What is the part number of your sbRIO? Why are you using 1 MHz timed loop to read data from CAN? What does your application in general and what does this loop do in the context of whole project?

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Message 5 of 6
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Hi Agnes,

I get CAN Messages down to every 8ms and because you can only read one message at a time with the sbRIO CAN function, I need to use this fast cycle time.

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Message 6 of 6
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