Providing Configurable QoS Management in Real-Time Systems with QoS Aspect Packages

• Published in: Transactions on Aspect-Oriented Software Development II pp. 256 - 288
• Main Authors: Tešanović, Aleksandra, Amirijoo, Mehdi, Hansson, Jörgen
• Format: Book Chapter
• Language: English
• Published: Berlin, Heidelberg Springer Berlin Heidelberg 2006
• Series: Lecture Notes in Computer Science
• Subjects: Comet Database; Control Algorithm Parameter; Generic Modeling Environment; Interarrival Time; TECHNOLOGY; TEKNIKVETENSKAP
• ISBN: 3540488901; 9783540488903; 9783540488910; 354048891X
• ISSN: 0302-9743; 1611-3349
• DOI: 10.1007/11922827_9

Current quality of service (QoS) management approaches in real-time systems lack support for configurability and reusability as they cannot be configured for a target application or reused across many applications. In this paper we present the concept of a QoS aspect package that enables developing configurable QoS management for real-time systems. A QoS aspect package represents both the specification and the implementation of a set of aspects and components that provide a number of QoS policies. A QoS aspect package enables upgrades of already existing systems to support QoS performance assurance by adding aspects and components from the package. Furthermore, a family of real-time systems can easily be developed by adding aspects from the QoS aspect package into an existing system configuration. We illustrate the way a family of real-time database systems is developed using the QoS aspect package with a case study of an embedded real-time database system, called COMET. Our experiments with the COMET database have shown that it is indeed possible to design a real-time system without QoS management and then with a reasonable effort add the QoS dimension to the system using a QoS aspect package.