Energy Conservation for Real-Time Disk Systems with I/O Burstiness   Adam Roth*, Adam Manzanares#, Xiaojun Ruan#, Kiranmai Bellam#, Xiao Qin#†, and Mais Nijim$   *BigTribe Corporation 330 Townsend St Ste 209 San Francisco, CA 94107, USA #Department of Computer Science and Software EngineeringAuburn University, Auburn, Alabama 36830, USA {acm0008, kzb0008}@eng.auburn.edu, xqin@auburn.edu $Computer Science, School of ComputingThe University of Southern Mississippi Hattiesburg, MS 39406 Mais.nijim@usm.edu   Energy conservation has become a critical problem for real-time embedded storage systems. Although a variety of approaches to reducing energy consumption has been extensively studied, energy conservation for real-time embedded storage systems is still an open problem. In this paper, we propose an energy management strategy (IBEC) using I/O burstiness for real time embedded storage systems. Our approach aims at blending the IBEC energy management strategy with low level disk scheduling mechanism to conserve energy consumed by storage systems. Extensive experiments are conducted involving a number of different load patterns as well as real-world data-intensive applications. To prove the efficiency of IBEC, we compare the performance of IBEC against three existing strategies, namely, PA-EDF, DP-EDF, and EDF. Results demonstratively show that compared with the alternative strategies, IBEC reduces the power consumption of real-time embed disks system by up to 60%.  This paper appeared in the Proceedings of Int'l Workshop Next Generation Autonomous Storage and High Performance Computing , St. Thomas, Virgin Islands, Aug. 2008. † Corresponding author. http://www.eng.auburn.edu/~xqin Acknowledgments: The work reported in this paper was supported by the US National Science Foundation under Grants No. CCF-0742187 and No. CNS-0713895, Auburn University under a startup grant, and the Intel Corporation under Grant No. 2005-04-070.

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