Abstract: Systems, methods, and software technology for tracking component latency. A component tracking method records the start-times and end-times of components as they execute in furtherance of a request for a service. In addition, a dependency tracking method records the start-times and the end-times of one or more dependencies of the components, which may also be executed in furtherance of the requests. A latency of each component may be determined from its start-time and end-time, as well as the start-times and end-times of its dependencies. In some implementations, component latency may be analyzed on a per-request basis.