Using a supported adapter as a PTP master clock in NTP mode
(ptp_master_ntp.cfg), the local NTP client periodically
synchronizes with a remote NTP server (configurable through the local NTP daemon). NTP
is used to set the system clock and adapter clock and
sfptpd keeps the
system clock in sync with the adapter precision oscillator.
sfptpd daemon synchronizes with the local NTP client every 1 second (default) and this is configurable in the
sfptpd configuration file.
If the master is not the active PTP master, it will by default, revert to a PTP slave clock.
sfptpduses the UTC timescale. Ensure the
ptp_utc_offsetoption in the
sfptpdmaster configuration file is set to 0.