MOCA: a multiprocessor on-line competitive algorithm for real-time system scheduling
Theoretical Computer Science - Special issue on dependable parallel computing
An Adaptive, Distributed Airborne Tracking System ("process the Right Tracks at the Right Time")
Proceedings of the 11 IPPS/SPDP'99 Workshops Held in Conjunction with the 13th International Parallel Processing Symposium and 10th Symposium on Parallel and Distributed Processing
A Case Study in Architectural Modelling: The AEGIS System
IWSSD '96 Proceedings of the 8th International Workshop on Software Specification and Design
Static-Priority Scheduling on Multiprocessors
RTSS '01 Proceedings of the 22nd IEEE Real-Time Systems Symposium
Best-effort decision-making for real-time scheduling
Best-effort decision-making for real-time scheduling
Scheduling dependent real-time activities
Scheduling dependent real-time activities
An EDF-based Scheduling Algorithm for Multiprocessor Soft Real-Time Systems
ECRTS '05 Proceedings of the 17th Euromicro Conference on Real-Time Systems
Improved Schedulability Analysis of EDF on Multiprocessor Platforms
ECRTS '05 Proceedings of the 17th Euromicro Conference on Real-Time Systems
The Non-preemptive Scheduling of Periodic Tasks upon Multiprocessors
Real-Time Systems
IEEE Transactions on Computers
Utility accrual real-time scheduling: models and algorithms
Utility accrual real-time scheduling: models and algorithms
The Partitioned Multiprocessor Scheduling of Deadline-Constrained Sporadic Task Systems
IEEE Transactions on Computers
An Optimal Real-Time Scheduling Algorithm for Multiprocessors
RTSS '06 Proceedings of the 27th IEEE International Real-Time Systems Symposium
Utility accrual real-time scheduling and synchronization on single and multiprocessors: models, algorithms, and tradeoffs
Work-Conserving Optimal Real-Time Scheduling on Multiprocessors
ECRTS '08 Proceedings of the 2008 Euromicro Conference on Real-Time Systems
Optimal Dynamic-Priority Real-Time Scheduling Algorithms for Uniform Multiprocessors
RTSS '08 Proceedings of the 2008 Real-Time Systems Symposium
Partitioned Fixed-Priority Preemptive Scheduling for Multi-core Processors
ECRTS '09 Proceedings of the 2009 21st Euromicro Conference on Real-Time Systems
The Art of Multiprocessor Programming
The Art of Multiprocessor Programming
IEEE Spectrum
ChronOS Linux: a best-effort real-time multiprocessor Linux kernel
Proceedings of the 48th Design Automation Conference
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We consider the problem of scheduling dependent real-time tasks for overloads on a multiprocessor system, yielding best-effort timing assurance. The application/scheduling model includes tasks with time/utility function time constraints, mutual exclusion constraints, and arbitrary arrival, execution-time and resource access behaviors, with timeliness optimization objective of maximizing total accrued utility while ensuring mutual exclusion constraints and deadlock-freedom. Since this problem is NP-hard, we develop a class of polynomial-time heuristic algorithms, called the Global Utility Accrual (GUA), and present two algorithm instances, namely, Non-Greedy Global Utility Accrual (NGGUA) and Greedy Global Utility Accrual (G-GUA). We establish several properties of the algorithms including conditions under which optimal total utility is accrued, mutual exclusion constraints are satisfied, and deadlock-freedom is achieved. We develop a Linux-based real-time kernel called ChronOS, extended from PREEMPT RT real-time patch. ChronOS provides a framework for implementation of a variety of multiprocessor schedulers. Our experimental studies with ChronOS reveal the effectiveness of GUA algorithms under a broad range of workloads.