Feasibility of on-line speed policies in real-time systemsSpringer Science and Business Media LLC - Tập 56 - Trang 254-292 - 2020
Bruno Gaujal, Alain Girault, Stéphan Plassart
We consider a real-time system where a single processor with variable speed executes an infinite sequence of sporadic and independent jobs. We assume that job sizes and relative deadlines are bounded by C and
$$\varDelta $$
respectively. Furthermore,
$$S_{\max }$$
denotes the maximal speed of the processor. In such a real-time system, a speed selection policy dynamically chooses (i.e., on-li...... hiện toàn bộ
Formal timing analysis for distributed real-time programsSpringer Science and Business Media LLC - Tập 7 - Trang 57-90 - 1994
Horst F. Wedde, Bogdan Korel, Dorota M. Huizinga
A static analysis method for verifying timing properties of real-time distributed programs is presented. The goal is to calculate the worst-case response time of concurrent tasks which run mainly independently but share, and may have to wait for, logical or physical devices. For such tasks, the determination of the worst-case waiting time is a crucial problem because of the unpredictable order of ...... hiện toàn bộ
Utilization Based Schedulability Bounds for Age Constraint Process Sets in Real-Time SystemsSpringer Science and Business Media LLC - Tập 23 - Trang 273-295 - 2002
Lars Lundberg
Some real-time systems consist of a number of processes that operate under age constraints. In such systems, the maximum time from the start of process L
i in cycle k to the end in cycle k+1 must not exceed the age constraint A
i for that process. The age constraint can be met by using fixed priority scheduling and periods equal to A
i/2. However, this approach restricts the number of process sets...... hiện toàn bộ
Multi-objective design exploration approach for Ravenscar real-time systemsSpringer Science and Business Media LLC - Tập 54 - Trang 424-483 - 2018
Rahma Bouaziz, Laurent Lemarchand, Frank Singhoff, Bechir Zalila, Mohamed Jmaiel
This article deals with the design exploration and verification of real-time critical systems. Assigning the functions to the tasks of the target real-time operating system is a part of the design process. Finding a suitable design involves many important design decisions that have a strong impact on the system quality criteria. However, with the increasing complexity and scale of today’s systems ...... hiện toàn bộ
Time-sensitive autonomous architecturesSpringer Science and Business Media LLC - Tập 59 - Trang 568-608 - 2023
Donato Ferraro, Luca Palazzi, Federico Gavioli, Michele Guzzinati, Andrea Bernardi, Benjamin Rouxel, Paolo Burgio, Marco Solieri
Autonomous and software-defined vehicles (ASDVs) feature highly complex systems, coupling safety-critical and non-critical components such as infotainment. These systems require the highest connectivity, both inside the vehicle and with the outside world. An effective solution for network communication lies in Time-Sensitive Networking (TSN) which enables high-bandwidth and low-latency communicati...... hiện toàn bộ