Messages in this thread |  | | From | Herbert Rosmanith <> | Subject | Re: Why touch the CMOS clock? | Date | Sat, 11 May 1996 18:41:59 +0200 (MET DST) |
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> This is essentially right. But the kernel can also do elaborate time-ke= > eping > using external clocks (eg. radio clocks) or network services (NTP...), > which renders the kernel time *much* more precise than the RTC. The > kernel therefore needs to update the RTC in order to limit its drift. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If you dont have the chance to update your clock via ntp, then the RTC is *much more* accurate than the internal, interrupt driven timer-clock. After one or two weeks uptime, the interrupt clock had a drift of two hours, reported a friend of mine. We fixed this by "clock -r" every hour. I hope the kernel does *not* update the RTC itself , now does it ?
/herp
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