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Avaliando o Uso de Escalonadores Estáticos e Dinâmicos Tradicionais em Sistemas Tempo Real Embarcados

M. WehrmeisterL. B. Becker

Over the last years, real-time embedded systems have been focus of special attention. Such systems should attempt not only to timing requirements from the target application, but also for the requirements coming from the embedded design. Design space exploration can be seeing as a concrete example, as one should be aware of power consumption when adjusting the CPU operation frequency, which can be done give to the selected scheduling algorithm and also the application timing requirements. This work presents a study that evaluates the impact on using static and dynamic scheduling algorithms (RM and EDF) on a given embedded target architecture. The goal is to provide enough insight to designers in order that they can be able to figure out the optimal configuration for the developed system. The optimal configuration is the one that consumes less power and at the same time provides guarantees for the timing requirements. The obtained results shows that in many cases EDF (dynamic scheduling algorithm) turns to be a better choice in regarding the system power consumption.

http://www.lbd.dcc.ufmg.br:8080/colecoes/wtr/2004/010.pdf

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Biblioteca Digital Brasileira de Computação - Contato: bdbcomp@lbd.dcc.ufmg.br
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