This section details the metrics for the NTP service.

  • Availability - A NTP service is considered available if the connection to the NTP server succeeds.

  • Local Clock Offset - The difference in time between the local clock and the reference clock.

  • Response Time - The time it took to determine service availability.

  • Round Trip Delay - The delay for a message launched to arrive at the configured reference clock at a specific time. Measured in seconds with a fraction point between bits 15 and 16. May take positive or negative value, depending on the relative time and frequency offsets. Normal values range from negative values of a few milliseconds to positive values of several hundred milliseconds.

  • Root Delay - The delay for a message launched to arrive at the primary reference source at the root of the NTP subnet. Measured in seconds with fraction point between bits 15 and 16. May take positive or negative value, depending on the relative time and frequency offsets. Normal values range from negative values of a few milliseconds to positive values of several hundred milliseconds.

  • Root Dispersion - Maximum error relative to the primary reference source at the root of the NTP subnet. Measures all the errors associated with the network hops and servers between client and the reference source, in seconds.