Messages in this thread | | | Subject | Re: Kernel unable to adjust timeofday | From | Valdis.Kletnieks@vt ... | Date | Fri, 26 Sep 2008 10:51:46 -0400 |
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On Fri, 26 Sep 2008 15:29:53 +0200, Rafal said: > Hello, my system (64bit Ubuntu amd64 box) drifts about 10 seconds per hour > (i.e. time visible in the system).
First thing to do is figure out why your box has *such* a dreadfully poor clock. You're drifting at around 3,000 parts-per-million. NTP is only able to deal with drifts up to 500 ppm, and most systems clocks are *much* more stable than that (for instance, my laptop is drifting at 2 ppm at the moment). The fact you're way outside the sane range leads to trouble...
> When I use adjtime(), or when I use ntpd that uses adjtime() then the > adjustment is slower then the speed of drift.
... which is why you see this happen.
> The default rate of adjustment seems to be really low, can we set the > default adjustment rate to be a higher?
The default rate is set fine. It's simply unable to deal with insane hardware and/or software. What kernel are you running on it? [unhandled content-type:application/pgp-signature] | |