Monitoring and debugging of distributed real-time systems
Monitoring and debugging of distributed real-time systems
QoS Negotiation in Real-Time Systems and Its Application to Automated Flight Control
RTAS '97 Proceedings of the 3rd IEEE Real-Time Technology and Applications Symposium (RTAS '97)
A Dynamic Real-time Benchmark for Assessment of QoS and Resource Management Technology
RTAS '99 Proceedings of the Fifth IEEE Real-Time Technology and Applications Symposium
Adaptive QoS and Resource Management Using A Posteriori Workload Characterizations
RTAS '99 Proceedings of the Fifth IEEE Real-Time Technology and Applications Symposium
A Dynamic Quality of Service Middleware Agent for Mediating Application Resource Usage
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
Specification and Modeling of Dynamic, Distributed Real-Time Systems
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
Specifying and Measuring Quality of Service in Distributed Object Systems
ISORC '98 Proceedings of the The 1st IEEE International Symposium on Object-Oriented Real-Time Distributed Computing
IPDPS '01 Proceedings of the 15th International Parallel & Distributed Processing Symposium
Dynamically mapping tasks with priorities and multiple deadlines in a heterogeneous environment
Journal of Parallel and Distributed Computing
QoS management in service-oriented architectures
Performance Evaluation
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Dynamic, distributed, real-time systems control an environment that varies widely without any time-invariant statistical or deterministic characteristic, are spread across multiple loosely-coupled computers, and must control the environment in a timely manner. In order to ensure that such a system meets its timeliness guarantees, there must be a means to monitor and maintain the quality of service in the system. The QoS manager is a monitoring and diagnosis system for real-time paths, collections of time-constrained and precedence-constrained applications. These applications may be distributed across multiple, heterogeneous computers and networks. This paper addresses the QoS negotiation features of the QoS manager and its interaction with the middleware resource manager. The major contributions of the paper are the negotiation algorithms and protocol that minimize the impact on the other paths' QoS while maximizing the unhealthy path's QoS. The approach and algorithms for QoS negotiation are presented.