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Hagen Höpfner     Christian Bunse

Towards an energy aware DBMS : energy consumptions of sorting and join algorithms

Universität Rostock, 2009

in: 21. Workshop Grundlagen von Datenbanken : 02.-05. Juni 2009, Rostock-Warnemünde : Proceedings, Seiten 69-73

Abstract: Database management systems comprise various algorithms for efficiently retrieving and managing data. Typically, algorithm efficiency or performance is correlated with execution speed. However, the uptime of battery powered mobile- and embedded systems strongly depends on the energy consumption of the involved components. This paper reports our results concerning the energy consumption of different implementations of sorting and join algorithms. We demonstrate that high performance algorithms often require more energy than slower ones. Furthermore, we show that dynamically exchanging algorithms at runtime results in a better throughput.

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