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SubjectRe: updating the RTC automagically
On Nov 19, Richard B. Johnson wrote:

> The time-keeper (32kHz temperature-compenstated piezoelectric resonator)
> in the RTC is much more stable than the CPU clock, which in recent
> boards isn't even a quartz crystal, it's a cheap barium titanate
> "Ceramic resonator".

sorry but that's pure theory! I've seen quite some main boards where
the system clock was pretty good (most likely just by acident;) and
the RTC had frequency errors of (much) more than 100ppm...

> I don't think the you should set the RTC from the kernel except during
> the following once-a-day crond script.

that only depends on which quartz oszilator is worse -- you have to gamble;)



Harald
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