Baselining service-tagged data from subservices of a service for improved service assurance

A system comprising:

• one or more network interface units;
• and
• one or more processors coupled to the one or more network interface units and configured to perform:
• configuring a service as a collection of subservices on network devices of a network;
• decomposing a definition of the service into a subservice dependency graph that indicates the subservices and dependencies between the subservices that implement the service;
• based on the subservice dependency graph, configuring a subservice among the subservices to record and report a subservice metric as an indicator of subservice performance;
• determining a rate at which to obtain values of the subservice metric from the subservice;
• determining a confidence interval for the values of the subservice metric;
• obtaining the values of the subservice metric from the subservice at the rate, to produce values for monitoring the subservice;
• and
• determining whether at least one of the values for monitoring the subservice is within the confidence interval.

Non-transitory computer readable media encoded with instructions that, when executed by one or more processors coupled to one or more network interface units, cause the one or more processors to perform:

• configuring a service as a collection of subservices on network devices of a network;
• decomposing a definition of the service into a subservice dependency graph that indicates the subservices and dependencies between the subservices that implement the service;
• based on the subservice dependency graph, configuring a subservice among the subservices to record and report a subservice metric as an indicator of subservice performance;
• determining a rate at which to obtain values of the subservice metric from the subservice;
• determining a confidence interval for the values of the subservice metric;
• obtaining the values of the subservice metric from the subservice at the rate, to produce values for monitoring the subservice;
• and
• determining whether at least one of the values for monitoring the subservice is within the confidence interval.