[ntp:questions] Re: Ntp-4.1.2: tinker step 0;always slew and kernel time discipline

Nikolaev, Sergey snikolaev at ebs.com
Thu Feb 17 18:41:56 UTC 2005

The "-x" option sets "tinker step 600". The description of the "-x"
option includes a note about the fact that the kernel time discipline is
disabled with this option. However, I tested it and "ntpdc -c sysinfo"
still shows the "kernel" flag. So, my question applies to the "-x"
option as well.


-----Original Message-----
From: questions-bounces at lists.ntp.isc.org
[mailto:questions-bounces at lists.ntp.isc.org] On Behalf Of Tom Smith
Sent: Thursday, February 17, 2005 1:52 PM
To: questions at lists.ntp.isc.org
Subject: [ntp:questions] Re: Ntp-4.1.2: tinker step 0;always slew and
kernel time discipline

Nikolaev, Sergey wrote:
> We have a requirement to always slew the clock even if it means long 
> periods of time to correct the offset.
> The NTP documentation mentions this tinker option:
> step step
> The argument is the step threshold, by default 0.128 s. It can be set
to any positive number in seconds. If set to zero, step adjustments will
never occur. 
> Note: The kernel time discipline is disabled if the step threshold is
set to zero or greater than the default.
> However when I set "tinker step 0" and restart ntpd, I see in "ntpdc 
> -c sysinfo" that the kernel flag is still enabled. Obviously, it is 
> not disabled automaticly just by setting "tinker step 0".
> Do I need to disable it explicitly?
> Thanks in advance,
> Sergey

Not a direct answer to your question, but it sounds like what you really
want to do is instead start ntpd with the "-x" flag.

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