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INFOCOM
2011
IEEE

Dynamic right-sizing for power-proportional data centers

8 years 10 months ago
Dynamic right-sizing for power-proportional data centers
—Power consumption imposes a significant cost for data centers implementing cloud services, yet much of that power is used to maintain excess service capacity during periods of predictably low load. This paper investigates how much can be saved by dynamically ‘right-sizing’ the data center by turning off servers during such periods, and how to achieve that saving via an online algorithm. We prove that the optimal offline algorithm for dynamic right-sizing has a simple structure when viewed in reverse time, and this structure is exploited to develop a new ‘lazy’ online algorithm, which is proven to be 3-competitive. We validate the algorithm using traces from two real data center workloads and show that significant cost-savings are possible.
Minghong Lin, Adam Wierman, Lachlan L. H. Andrew,
Added 30 Aug 2011
Updated 30 Aug 2011
Type Journal
Year 2011
Where INFOCOM
Authors Minghong Lin, Adam Wierman, Lachlan L. H. Andrew, Eno Thereska
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