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I'm interessted in getting the number of context switches a two processes in a KVM vm takes on a singel CPU over some time.

Earlier i have used perf, is this best practice?

And how much time is used on a context switch per CPU?

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About 1.2 microseconds which is about a thousand Cycles

https://eli.thegreenplace.net/2018/measuring-context-switching-and-memory-overheads-for-linux-threads/

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  • And most of that time is taken up by the Linux scheduler doing its work
    – JanKanis
    Jun 12, 2020 at 6:29

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