D/G/1 queue

A D/G/1 queue is a mathematical model used to analyze a system where customers (or jobs) arrive and are served one at a time. "D" indicates arrivals happen at fixed, predictable intervals. "G" means the service times are variable but follow a general, unspecified pattern. "1" signifies there’s only one server attending to the customers. This model helps estimate wait times, queue lengths, and system efficiency, making it useful for designing and managing performance in areas like manufacturing, telecommunications, and service industries.