[ntp:questions] "Oneshot" time sync without risk of jumping time?
Manuel.Nulldevice at nurfuerspam.de
Sun Apr 27 08:49:08 UTC 2014
I want to keep the time updated on a small Embedded Linux device.
The clock doesn't have to be very accurate. An offset of a few seconds
This small device only has Internet for a few minutes a day and I have
to pay for each byte that gets transmitted, so I want to keep the
My idea to solve this was to run "ntpd -xq" as soon as I have
established my Internet connection.
The problem with this is that the time jumps if the difference is above
The documentation about the "-g" option says that there is a "panic
threshold" which is 1000s "by default". What does "by default" mean?
Does this mean that this value is configurable? If so: How?
What I want ntpd to do is to exit with error status if the time
difference is above the 600s limit. I don't want it to set the time
forcefully (jumping time) as this may cause trouble with cronjobs
running on the device.
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