| Re: [chrony-users] Fatal error : adjtimex() failed |
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On Tue, 21 Aug 2012, Tomalak Geret'kal wrote:
On 21/08/2012 19:35, Bill Unruh wrote:
On Tue, 21 Aug 2012, Tomalak Geret'kal wrote:
> On 21/08/2012 16:31, Bill Unruh wrote:
> > > > The SHM is fed by a known-good process that works
> > with ntpd and also > here
> >
> > Is it a secret which program you use?
> No, it's not a secret, but it's in-house so you won't have heard of it.
> The code is pretty much extracted straight from gpsd, though - there's
> nothing unusual in it. I can show source if required, though I'd rather
> not...
OK. Are you sure it is actually treating the shm properly?
Pretty much. At least I can't see any reason it wouldn't and have not seen
any indication that it isn't.
Are you getting better than 43 min between readings of the PPS
Yep, LastRx floats between 10 and 20 or so.
I'm afraid I may not have made clear the context of the above `chronyc
sources` output, which was only to demonstrate what happens after a while
when I don't have "noselect" on the GPS source and the GPS source has been
selected by chrony after a "no majority" message is output to syslog. I guess
it just stops caring about the PPS in this situation.
It should not do that. Sounds like a bug in chrony.
With my config fixed, I get the following consistently:
[sw200319 /root]# chronyc sources
210 Number of sources = 2
MS Name/IP address Stratum Poll LastRx Last sample
============================================================================
#* PPS0 0 4 17 +105ns[ +165ns] +/- 130ns
#? GPS 0 3 12 +4668us[+4668us] +/- 64ms
Yes, that looks fine. I am surprized that the nmea is only out by 4ms.
with only sane variances.
Tom
--
William G. Unruh | Canadian Institute for| Tel: +1(604)822-3273
Physics&Astronomy | Advanced Research | Fax: +1(604)822-5324
UBC, Vancouver,BC | Program in Cosmology | unruh@xxxxxxxxxxxxxx
Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/
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