Departmental Papers (CIS)
Date of this Version
December 2004
Document Type
Conference Paper
Recommended Citation
Insik Shin and Insup Lee, "Compositional Real-Time Scheduling Framework", . December 2004.
Abstract
Our goal is to develop a compositional real-time scheduling framework so that global (system-level) timing properties can be established by composing independently (specified and) analyzed local (component-level) timing properties. The two essential problems in developing such a framework are (1) to abstract the collective real-time requirements of a component as a single real-time requirement and (2) to compose the component demand abstraction results into the system-level real-time requirement. In our earlier work, we addressed the problems using the Liu and Layland periodic model. In this paper, we address the problems using another well-known model, a bounded-delay resource partition model, as a solution model to the problems. To extend our framework to this model, we develop an exact feasibility condition for a set of bounded-delay tasks over a bounded-delay resource partition. In addition, we present simulation results to evaluate the overheads that the component demand abstraction results incur in terms of utilization increase. We also present new utilization bound results on a bounded-delay resource model.
Keywords
real-time systems, real-time composition, real-time scheduling, multi-level scheduling, component-based design
Date Posted: 15 March 2005
This document has been peer reviewed.
Comments
Copyright 2004 IEEE. Reprinted from Proceedings of the 25th IEEE International Real-Time Systems Symposium 2004, pages 57-67.
Publisher URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isNumber=30114&page=1
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