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Description
Followup to #1594
Currently, we use time_ns() to denote current time in ns -> like here
According to Pep0564, the precision varies based off of OS (with testing the average step is that of ~1ms in Windows). Java has implemented an AnchoredClock class which provides much more precise readings of ns (100~ns). We might want to do something similar in our SDKs.
Relevant issue: open-telemetry/semantic-conventions#1621 (comment)