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A comment on Monotonic and wall clock time in the Go time package.

Re:Monotonic and wall clock time in the Go time package by jsw on Friday July 25, 2025 @02:53PM (#44686855)
For simple high-frequency time deltas, I've found this function wins on the perf front:

  //go:linkname nanotime runtime.nanotime
  func nanotime() int64
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