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Operating Systems Solaris "synchronisation lost" errors for Solaris NTP server Post 303042006 by solaris_1977 on Wednesday 11th of December 2019 01:35:21 AM
Old 12-11-2019
These are GPS clocks, some kind of harware device. Not sure if those are GNSS, it is maintained by some other team. But I can get more information about it.

So far, I didn't notice any issue on any server or our internal devices, neither any app or DB team reported.
Those messages, stated in my first post are from /var/adm/messages. It is monitoring team, who has set up to create a ticket based on these kinds of alerts. So it is little noise from management, why synchronization is lost to GPS devices and why time is drifted back around 1 second. I am just trying to find these answers.

Another thing I noticed is, poll says 1024. That means 1024 seconds without guidance means slow sync, slow adjustments etc. Am I understanding it correctly? If yes, should "minpoll 4 maxpoll 8" entry in ntp.conf for all 3 GPS devices help?
 

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UCYCOM(4)						   BSD Kernel Interfaces Manual 						 UCYCOM(4)

NAME
ucycom -- device driver for Cypress CY7C63743 and CY7C64013 USB to RS232 bridges SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device usb device ucom device ucycom Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ucycom_load="YES" DESCRIPTION
The ucycom driver provides support for the Cypress CY7C63743 and CY7C64013 bridge chips. These chips were designed to provide a low-cost transition path to USB for existing RS232 devices, and have fairly limited capabilities. The ucycom driver behaves like a tty(4). HARDWARE
The ucycom driver currently supports the following devices which incorporate Cypress USB to RS232 bridge chips: o DeLorme Earthmate USB GPS receiver SEE ALSO
tty(4), usb(4) HISTORY
The ucycom driver first appeared in FreeBSD 5.3. AUTHORS
The ucycom driver and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>. BSD
November 20, 2011 BSD
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