[ntp:questions] Q: Disabling "11 minute mode"

Dean S. Messing deanm at sharplabs.com
Tue Jan 22 23:13:22 UTC 2008

Richard B. Gilbert wrote:
> Dean S. Messing wrote:
> > Is it possible to disable "11 minute mode" from "ntp.conf"?
> > I've tried using the command "disable kernel" but that
> > appears to change the way time discipline is maintained, but
> > does nothing for "11 minute mode".
> > 
> > If using ntp.conf is not the way, what is?
> > 
> > Thanks for your help.
> > Dean
> What IS "11 minute mode"??

Oops.  Sorry!  I thought everyone reading this list
(who could answer my question :-) would know.

David Woolley gave you a good answer already so
I'll only add that if you want to "see" if you
are in "11 minute mode", do "adjtimex -p" and
look at the "status:" value. If it's odd, (LSB==1)
then your kernel is in "11 minute mode".

Now, if someone would tell me how to disable it
(short of hacking time.c) I'd be most thankful.

I tried turning it off with adjtimex -S 64) but
ntp changes it back again in a few minutes.

I'd like to disable it, but keep ntp kernel
discipline so I can do some analysis of my RTC.


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