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Power optimization for dynamic configuration in heterogeneous web server clusters

Bertini, L and Leite, JCB and Mossé, D (2010) Power optimization for dynamic configuration in heterogeneous web server clusters. Journal of Systems and Software, 83 (4). 585 - 598. ISSN 0164-1212

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Abstract

To reduce the environmental impact, it is essential to make data centers green, by turning off servers and tuning their speeds for the instantaneous load offered, that is, determining the dynamic configuration in web server clusters. We model the problem of selecting the servers that will be on and finding their speeds through mixed integer programming; we also show how to combine such solutions with control theory. For proof of concept, we implemented this dynamic configuration scheme in a web server cluster running Linux, with soft real-time requirements and QoS control, in order to guarantee both energy-efficiency and good user experience. In this paper, we show the performance of our scheme compared to other schemes, a comparison of a centralized and a distributed approach for QoS control, and a comparison of schemes for choosing speeds of servers. © 2009 Elsevier Inc. All rights reserved.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Bertini, L
Leite, JCB
Mossé, D
Date: 1 April 2010
Date Type: Publication
Journal or Publication Title: Journal of Systems and Software
Volume: 83
Number: 4
Page Range: 585 - 598
DOI or Unique Handle: 10.1016/j.jss.2009.10.040
Schools and Programs: Dietrich School of Arts and Sciences > Computer Science
Refereed: Yes
ISSN: 0164-1212
Date Deposited: 12 Nov 2012 15:41
Last Modified: 02 Feb 2019 15:56
URI: http://d-scholarship.pitt.edu/id/eprint/16252

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