@inproceedings{752da700c2dd4b89a7989d70accde5fa,
title = "Energy-efficient server clusters",
abstract = "This paper evaluates five policies for cluster-wide power management in server farms. The policies employ various combinations of dynamic voltage scaling and node vary-on/vary-off (VOVO) to reduce the aggregate power consumption of a server cluster during periods of reduced workload. We evaluate the policies using a validated simulator that calculates the energy usage and response times of a Web server cluster serving traces culled from real-life Web server workloads. Our results show that a relatively simple policy of independent dynamic voltage scaling on each server node can achieve savings ranging up to 29% and is competitive with more complex schemes for some workloads. A policy that brings nodes online and takes them offline depending on the workload intensity also produces significant savings up to 42%. The largest savings are obtained by using a coordinated voltage scaling policy in conjunction with VOVO. This policy provides up to 18% more savings than just using VOVO in isolation. All five policies maintain server response times within acceptable norms.",
keywords = "Clusters, Power Management, Voltage Scaling, Web Servers",
author = "Mootaz elnozahy and Kistler, {Michael D.} and RAMAKRISHNAN RAJAMONY",
year = "2003",
language = "English (US)",
isbn = "3540010289",
volume = "2325",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer-Verlag",
pages = "179--197",
booktitle = "Power-Aware Computer Systems - 2nd International Workshop, PACS 2002, Revised Papers",
}