[chrony-users] PPS-only PHC refclock

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To: chrony-users@xxxxxxxxxxxxxxxxxxxx
Subject: [chrony-users] PPS-only PHC refclock
From: Joe Williams <williams.joe@xxxxxxxxx>
Date: Tue, 1 Feb 2022 13:07:08 -0700
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Hello list,

I have a NIC that has an OCXO onboard accessible via /dev/ptp2. If I set up chrony to use it as a PPS refclock and have an external NTP server for wall clock time would that work and improve accuracy of my system clock? Would I need to discipline the PHC from system time, presumably using phc2sys?

Example config:

server time.facebook.com

refclock PHC /dev/ptp2 pps

Thanks!

-Joe

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