David,
Hope you are doing fine, two weeks ago I saw a similar behavior in a 21400 cluster running R80.20 but with CPU interrupts, they went from 10 to billions in seconds. No increases in the CPU load overall.
![Captura.PNG Captura.PNG](https://community.checkpoint.com/t5/image/serverpage/image-id/3980iD8A9C6FA325802DE/image-size/large?v=v2&px=999)
I opened a TAC case for this and they told that it was cosmetic only, then I went to /proc/interrupts and it was fine.
My guess is that when CPUs are under load CPView may lead to some funny numbers.
I recommend you to use iostat and iostats -dx
There are more flags to play with, just look online and you will find many helpful examples.
![io.png io.png](https://community.checkpoint.com/t5/image/serverpage/image-id/3981i3CFEEC15ED31331D/image-size/large?v=v2&px=999)
Regards,
____________
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