Timing synchronization service and distribution system

A first probing device comprising:

• one or more processors operably coupled to a memory;
• and
• a synchronization engine executable by the one or more processors to:
• send, to a second probing device of a plurality of probing devices in a network, a timestamp for the first probing device, wherein the first probing device and the second probing device are included in a probing device pair;
• receive, from the second probing device, a timestamp for the second probing device;
• determine a timestamp offset between the timestamp for the first probing device and the timestamp for the second probing device;
• receive an independent timestamp offset for the probing device pair;
• when the timestamp offset is classified as a valid timestamp offset based on a difference between the timestamp offset and the independent timestamp offset for the probing device pair;
• determine, based at least in part on the timestamp for the first probing device and the timestamp for the second probing device, an upper-bound delta time and a lower-bound delta time for the probing device pair;
• calculate, based at least in part on the upper-bound delta time and the lower-bound delta time for the probing device pair, a slope value and an intercept value for the first probing device;
• and
• send, to a local system master clock, the slope value and the intercept value for the first probing device.

A network system comprising:

• a first probing device;
• a second probing device;
• and
• a local system master clock,
• wherein the first probing device is configured to
• send, to the second probing device, a timestamp for the first probing device, wherein the first probing device and the second probing device are included in a probing device pair;
• receive, from the second probing device, a timestamp for the second probing device;
• determine a timestamp offset between the timestamp for the first probing device and the timestamp for the second probing device;
• receive an independent timestamp offset for the probing device pair;
• when the determined timestamp offset is classified as a valid timestamp offset based on a difference between the determined timestamp offset and the independent timestamp offset for the probing device pair, determine, based at least in part on the timestamp for the first probing device and the timestamp for the second probing device, an upper-bound delta time and a lower-bound delta time for the probing device pair;
• calculate, based at least in part on the upper-bound delta time and the lower-bound delta time for the probing device pair, a slope value and an intercept value for the first probing device;
• and
• send, to the local system master clock, the slope value and the intercept value for the first probing device, and
• wherein the local system master clock is configured to:
• receive, from the first probing device, the slope value and the intercept value for the first probing device;
• calculate, based at least in part on the slope value and the intercept value for the first probing device, a timestamp offset for the first probing device;
• determine a network error in a network that includes the local system master clock and the first probing device;
• update the timestamp offset for the first probing device based on the network error;
• and
• send, to the first probing device, the updated timestamp offset for the first probing device.

A local system master clock comprising:

• one or more processors operably coupled to a memory;
• and
• a synchronization engine executable by the one or more processors to:
• establish a connection with a reference clock prober device;
• establish a transmission control protocol (TCP) connection with each of a plurality of probing devices, wherein each probing device of the plurality of the probing devices is a client of the local system master clock, and wherein the local system master clock is located in a same data center as each of the plurality of probing devices;
• send, to the reference clock prober device, a first list identifying each of the probing devices in the plurality of probing devices;
• send, to each probing device of the plurality of probing devices, a corresponding list identifying every probing device other than the probing device in the plurality of probing devices;
• receive, from the probing devices and the reference clock prober device, respective offset information and respective drift information for all of the probing devices and for the reference clock prober device, wherein the offset information comprises, for each of the probing devices, a timestamp offset classified as a valid timestamp offset based on a difference between the timestamp offset and an independent timestamp offset for a pair of the probing devices;
• calculate a network error based on the respective offset information and the respective drift information for all of the probing devices and the reference clock prober device;
• calculate respective clock correction information for all of the probing devices and for the reference clock prober device based on the network error and the respective offset information and respective drift information for all of the probing devices and the reference clock prober device;
• and
• send the respective clock correction information to the probing devices and to the reference clock prober device.