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Author: Rainer Weikusat
Date:  
To: dng
Subject: Re: [DNG] Detailed technical treatise of systemd
Didier Kryn <kryn@???> writes:
> Le 10/11/2015 01:01, Hendrik Boom a écrit :


[...]

>> I used chrony as my NTP client. If the discrepancy between local time
>> on the machine and the correct time, it just gave up. I/m not sure at
>> what discrepancy this happened, but it helped a lot to explicitly set
>> the time by my watch. Once the time was properly synced, though,
>> chrony worked well to keep it correct.
>
>     I use the package simply named "ntp" in Debian repo.


[...]

>     This ntp client doesn't give up.


That's not really true: The ntpd from the NTP reference implementation
will raise a so-called 'clock panic' if the system time is off by more
than the panic threshold (compile-time configurable as it seems) of
1000s. If the daemon was started with -g (Debian default), it will
ignore the first panic and change the clock nevertheless. A subsequent
one will cause it to exit.