How to measure OS and hardware latency on isolated CPUs?

Solution Verified - Updated 2020-08-19T19:19:10+00:00 -

Issue

When the low-latency environment is set and/or CPUs are isolated, the question is how good the isolation is?
Are there any tools to measure the isolation and how to collect statistics of undesired "interruptions", latency, unwanted timer interrupts on isolated CPU cores?

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