[ntp:questions] Sudden frequency offset jump
Hal Murray
hal-usenet at ip-64-139-1-69.sjc.megapath.net
Fri May 2 20:31:02 UTC 2008
In article <481b11e9$0$14944$426a34cc at news.free.fr>,
Noob <root at localhost> writes:
>Hello,
>
>One of my systems had been running for ~6 weeks. During this time,
>the frequency offset computed by ntpd remained stable between
>-6.6 ppm and -6.2 ppm.
>
>On April 30, the time offset started climbing and reached 14 ms in
>approximately 90 minutes. ntpd started bumping the frequency offset,
>down to -9.4 ppm.
>
>Today, the frequency offset remains around -9.4 ppm.
>(And the time offset stays below 1 ms).
Did the temperature change?
My systems run about 1 PPM/C so it would take a pretty big
shift to explain 3 PPM. Maybe somebody adjusted the
air conditioner in the server room? Or installed a new
server that's blowing a lot of hot air in your direction?
--
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