Worst-Case Execution Time Analysis from UML-based RT/E Applications

Moving from code-centric to model-centric development seems to be a promising way to cope with the increasing complexity of real-time embedded systems (RT/ES). These systems have various critical requirements that must be validated. Validation is then one of the key-point of their development. Relating to this goal, schedulability analysis methods are usually used to validate the system’s real-time requirements. Most of these methods rely on the knowledge of the Worst-Case Execution Time (WCET) of every task of the system. This paper presents an approach to derive WCET estimates for an application’s UML model.