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Control-oriented multirate LPV modelling of virtualized service center environments

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4 Author(s)
Tanelli, M. ; Dipt. di Elettron. e Inf., Politec. di Milano, Milan, Italy ; Schiavoni, N. ; Ardagna, D. ; Lovera, M.

To reduce the operating and energy costs of IT systems, nowadays software components are executed in virtualized servers, where a varying fraction of the physical CPU capacity is shared among running applications. Further, in service oriented environments, providers need to comply with the Service Level Objectives (SLO) stipulated in contracts with their customers. The trade-off between energy consumption and quality of service guarantees can be formalized in terms of a constrained control problem. To effectively solve it, accurate models of the virtualized server dynamics are needed. In this paper, an LPV multirate modeling approach is proposed, and its suitability for the considered application is assessed on experimental data.

Published in:

Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on

Date of Conference:

15-18 Dec. 2009