Response-Time Analysis of Multipath Flows in Hierarchically-Scheduled Time-Partitioned Distributed Real-Time Systems

IEEE Access

Andoni Amurrio¹  Ekain Azketa²  J. Javier Gutierrez³  Michael Gonzalez Harbour³  Mario Aldea³ 

[1] Dependable Embedded Systems, IKERLAN Technology Research Center, Basque Research and Technology Alliance (BRTA), Arrasate, Spain;Industrial Cybersecurity, IKERLAN Technology Research Center, Basque Research and Technology Alliance (BRTA), Arrasate, Spain;Software Engineering and Real-Time Group, University of Cantabria, Santander, Spain;

关键词: Schedulability analysis;    time partitioning;    hierarchical scheduling;    distributed systems;    safety;    industrial application;   

DOI  :  10.1109/ACCESS.2020.3033461

来源: DOAJ

【 摘 要 】

Modern industrial cyberphisical systems exhibit increasingly complex execution patterns like multipath end-to-end flows, that force the real-time community to extend the schedulability analysis methods to include these patterns. Only then it is possible to ensure that applications meet their deadlines even in the worst-case scenario. As a driving motivation, we present a real industrial application with safety requirements, that needs to be re-factored in order to leverage the features of new execution paradigms such as time partitioning. In this context we develop a new response-time analysis technique that provides the capacity of obtaining the worst-case response time of multipath flows in time-partitioned hierarchical schedulers and also in general fixed-priority (FP) real-time systems. We show that the results obtained with the new analysis reduce the pessimism of the currently used holistic analysis approach.

【 授权许可】

Unknown