[ntp:questions] Why does ntp keep changing my conf file?

unruh unruh at wormhole.physics.ubc.ca
Wed Sep 22 21:59:03 UTC 2010


On 2010-09-22, Daniel Havey <dhavey at yahoo.com> wrote:
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> The bloody thing made it worse!  Look at the graph.  It was doing just fine=
>  at 0.002147 second offset, then I started ntpd and look what it does.  Thi=

Yes, because it had an entirely wrong idea what the frequency drift was,
so it has to use its algorithm to find the right drift. It is extremely
slow to do so ( about 10 hours).
So wait a day., (What graph by the way? Netnews does not have graphics.)



> s is definitely not very good for a testbed.=0A=0AThe evil script actually =
> did a better job.=0A=0A=0A=0A--- On Tue, 9/21/10, David Woolley <david at ex.d=
> jwhome.demon.invalid> wrote:=0A=0A> From: David Woolley <david at ex.djwhome.d=
> emon.invalid>=0A> Subject: Re: [ntp:questions] Why does ntp keep changing m=
> y conf file?=0A> To: questions at lists.ntp.org=0A> Date: Tuesday, September 2=
> 1, 2010, 11:16 PM=0A> Richard B. Gilbert wrote:=0A> =0A> > It not only LOOK=
> S too good to be true, it IS to good=0A> to be true!=0A=0AFixed that ;^)=0A=
>=0A> > =0A> > NTPD has not yet been able to contact either=0A> cogsworth.ae=
> ro or dns.aero.org.=0A> > =0A> =0A> Pay attention at the back.=A0 This has =
> already been=0A> explained.=0A> =0A> > Also, you appear to have forced the =
> poll interval to=0A> 1024 seconds.=A0 1024 is really great when your clock =
> is=0A> within a few microseconds of the =0A> =0A> I have a feeling that ntp=
> d does this if there is an=0A> extended outage.=0A> =0A> > =0A> > Finally, =
> two servers are not sufficient to allow NTPD=0A> to do its best. =0A> =0A> =
> It has already been made clear that the requirement here is=0A> close lock =
> to a single local server which has to be working=0A> for the system to be v=
> alid at all.=A0 This is not trying=0A> to obtain accurate true time from un=
> reliable secondary=0A> sources.=0A> =0A> He's been given bad advice about n=
> ptdate, but you still=0A> have to read the actual situation and respond acc=
> ordingly.=0A> =0A> _______________________________________________=0A> ques=
> tions mailing list=0A> questions at lists.ntp.org=0A> http://lists.ntp.org/lis=
> tinfo/questions=0A>=0A=0A=0A      
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