C9x <time.h> and clock precision

D. J. Bernstein djb at cr.yp.to
Tue Oct 6 17:48:22 UTC 1998

Markus Kuhn writes:
> and if you think that the Pentium's internal bus cycle counter

Do you have any idea what you're talking about? The bus frequency is
much lower than the CPU frequency.

> is suitable for such applications,

As I said, you can tell the difference on a Pentium-233 between
something that takes 130ns and something that takes 135ns.

Why do you have so much trouble grasping the concept that small
intervals have much smaller errors than large intervals?

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