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Quality-Of-Service: The Role of Energy

Geovani R. WiedenhoftArliones Hoeller Jr.Antônio Augusto Fröhlich

This work explores energy as a parameter for Quality of Service (QoS) of embedded systems. We argue that it is not enough to guarantee other QoS metrics (e.g., processing, communication, memory) if doing so the system runs out of battery and is unable to complete its computations. In this context, we developed a scheduler for imprecise tasks that, knowing battery’s life-time and tasks’ energy consumption, prevents tasks from executing its optional parts to ensure that tasks finish. A prototype was developed for EPOS (Embedded Parallel Operating System) using the system’s power management infra-structure.

http://www.lbd.dcc.ufmg.br/colecoes/wtr/2007/013.pdf

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