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Re: CVS commit: src/sys/kern



Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost> writes:
> perry%piermont.com@localhost wrote:
>
>> I was under the impression that for some counters with fixed
>> frequency, like the ACPI time register, that the frequency was
>> determined by specification. Am I mistaken on that?
>
> Usually crytal oscillators have 10~200 ppm tolerance
> (including temperature dependency), so lower digits
> (under ~100kHz on 1GHz CPU) are not so significant.
>
> I'm just afraid such not-so-meaningful digits might confuse
> some users.

I doubt it, but more importantly, it is important for debugging and
other purposes to know what the value decided at boot time was.

Perry



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