TY - GEN
T1 - Optimal sleep patterns for serving delay-tolerant jobs
AU - Kamitsos, Ioannis
AU - Andrew, Lachlan
AU - Kim, Hongseok
AU - Chiang, Mung
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - Sleeping is an important method to reduce energy consumption in many information and communication systems. In this paper we focus on a typical server under dynamic load, where entering and leaving sleeping mode incurs an energy and a response time penalty. We seek to understand under what kind of system configuration and control method will sleep mode obtain a Pareto Optimal tradeoff between energy saving and average response time. We prove that the optimal "sleeping" policy has a simple hysteretic structure. Simulation results then show that this policy results in significant energy savings, especially for relatively delay insensitive applications and under low traffic load. However, we demonstrate that seeking the maximum energy saving presents another tradeoff: it drives up the peak temperature in the server, with potential reliability consequences.
AB - Sleeping is an important method to reduce energy consumption in many information and communication systems. In this paper we focus on a typical server under dynamic load, where entering and leaving sleeping mode incurs an energy and a response time penalty. We seek to understand under what kind of system configuration and control method will sleep mode obtain a Pareto Optimal tradeoff between energy saving and average response time. We prove that the optimal "sleeping" policy has a simple hysteretic structure. Simulation results then show that this policy results in significant energy savings, especially for relatively delay insensitive applications and under low traffic load. However, we demonstrate that seeking the maximum energy saving presents another tradeoff: it drives up the peak temperature in the server, with potential reliability consequences.
KW - Markov decision process
KW - Pareto tradeoff
KW - energy efficiency
KW - sleep state
KW - switching cost
UR - http://www.scopus.com/inward/record.url?scp=77954478926&partnerID=8YFLogxK
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U2 - 10.1145/1791314.1791320
DO - 10.1145/1791314.1791320
M3 - Conference contribution
AN - SCOPUS:77954478926
SN - 9781450300421
T3 - Proceedings of the e-Energy 2010 - 1st Int'l Conf. on Energy-Efficient Computing and Networking
SP - 31
EP - 40
BT - Proceedings of the e-Energy 2010 - 1st Int'l Conf. on Energy-Efficient Computing and Networking
T2 - 1st International Conference on Energy-Efficient Computing and Networking, e-Energy 2010
Y2 - 13 April 2010 through 15 April 2010
ER -