CPU going up and down

We have the dude setup to monitor an RB1200 router’s CPU, there are times when it goes down and back up again, most of the times it comes back up right away, sometimes a minute or two later. I looked at logging documentation but didn’t find anything, is there anyway to monitor this information?

I can run the command ‘system resource monitor’ that shows the cpu usage percent. Is there any other way I can know if the CPU is up/down? I assume if the CPU stops working the router would crash but that doesn’t seem to be the case.

Edit: PRTG monitoring shows the CPU was up the whole time while the dude notification shows it went down. Could be something up with the dude’s monitoring for that cpu only?