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Compositional real-time scheduling framework for periodic reward-based task model
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DOI：10.1016/j.jss.2013.02.052.png)
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As the size and complexity of embedded software systems increase, compositional real-time scheduling framework is widely accepted as means to build large and complex systems. A compositional real-time scheduling framework proposes to decompose a system into independent subsystems and provides ways to assemble them into a flexible hierarchical real-time scheduling system while guaranteeing the internal real-time requirements of each subsystem. In this paper, we consider the imprecise reward-based periodic task model in compositional scheduling framework. Thus, we introduce the imprecise periodic resource model to characterize the imprecise resource allocations provided by the system to a single component, and the interface model to abstract the imprecise real-time requirements of the component. The schedulability of mandatory parts is also analyzed to meet the minimum requirement of tasks. Finally, we provide a scheduling algorithm to guarantee a certain amount of reward, which makes it feasible to efficiently compose multiple imprecise components. (C) 2013 Elsevier Inc. All rights reserved.
Keyword:
Compositional and hierarchical real-time scheduling
Interface model
Resource model
Imprecise computation
Reward function
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4.1
论文数:
5.4K
被引数:
8.4K
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