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Re:Core_bench: better micro-benchmarks through linear regres... by vardump on Saturday October 20, 2018 @09:37PM (#18266362)
> Microsoft documents "QueryPerformanceCounter" as using rdtsc in most cases. https://docs.microsoft.com/en-us/windows/desktop/dxtecharts/....

And the cases when it doesn't is when it's running on more than two CPU sockets. Then it'll fall back on other timers that can take even microseconds to query.

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