Guarantees for runnable entities with heterogeneous real-time requirements

Classical real-time (RT) analysis proves temporal properties of tasks. In industrial practice, however, tasks are often composed of runnable entities with heterogeneous RT requirements. If RT guarantees are only available at task granularity, the strictest RT requirement of a runnable entity determines the RT requirement of the entire task. However, by giving RT guarantees for each runnable entity, this over-provisioning can be avoided. We provide an analysis which is fine-grained enough to provide hard and weakly-hard response time guarantees for runnable entities and show the improvement in an industrial case study.