Conference Proceedings

Optimal sleep patterns for serving delay-tolerant jobs

I Kamitsos, L Andrew, H Kim, M Chiang

Proceedings of the e-Energy 2010 - 1st Int'l Conf. on Energy-Efficient Computing and Networking | Published : 2010

Abstract

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 de..

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