[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?

-- 
These are my opinions, not necessarily my employer's.  I hate spam.




More information about the questions mailing list