Cutting the electric bill for internet-scale systems


Journal Article

Energy expenses are becoming an increasingly important fraction of data center operating costs. At the same time, the energy expense per unit of computation can vary significantly between two difierent locations. In this paper, we characterize the variation due to fluctuating electricity prices and argue that existing distributed systems should be able to exploit this variation for significant economic gains. Electricity prices exhibit both temporal and geographic variation, due to regional demand difierences, transmission inefficiencies, and generation diversity. Starting with historical electricity prices, for twenty nine locations in the US, and network traffic data collected on Akamai's CDN, we use simulation to quantify the possible economic gains for a realistic workload. Our results imply that existing systems may be able to save millions of dollars a year in electricity costs, by being cognizant of locational computation cost difierences. Copyright 2009 ACM.

Full Text

Duke Authors

Cited Authors

  • Qureshi, A; Weber, R; Balakrishnan, H; Guttag, J; Maggs, B

Published Date

  • November 30, 2009

Published In

Volume / Issue

  • 39 / 4

Start / End Page

  • 123 - 134

Electronic International Standard Serial Number (EISSN)

  • 0146-4833

International Standard Serial Number (ISSN)

  • 0146-4833

Digital Object Identifier (DOI)

  • 10.1145/1594977.1592584

Citation Source

  • Scopus