Employing dual-block correlations to reduce the energy consumption of disk drives

doi:10.1007/s00607-016-0488-7

	Employing dual-block correlations to reduce the energy consumption of disk drives
	Deng, Yuhui 1,2; Cai, Jieming 1; Jiang, Wen 1; Qin, Xiao 3
	2017-03-01
发表期刊	COMPUTING
ISSN	0010-485X
卷号	99 期号:3 页码:235-253
摘要	Achieving high energy efficiency is becoming a very important challenge in designing future storage systems. This paper proposes to incorporate block correlations to perform energy-aware scheduling, thereby significantly improving energy efficiency of disk systems. Since the probability that an access to a file A will be followed by the same file (e.g. file B) that followed the last access to A is very high, we can infer the block correlations between files A and B. For example, block X of file A and block Y of file B may correlate with each other. We discover that energy-saving opportunities occur when the time interval between two accesses of block X and block Y is sufficiently large, and there are only a few sporadic requests distributed between these two accesses. Thus, when there is one access to block X, we can switch the disk drive to the low power state, properly arrange the sporadic requests, and transfer the disk back to the active state to serve the block access Y when saved energy is larger than energy penalty. Our experimental results demonstrate that the proposed energy-aware disk scheduler can strike a good balance between the energy saving, system performance, and reliability.
关键词	Disk scheduler Block correlation Energy efficiency Sporadic requests
DOI	10.1007/s00607-016-0488-7
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation (NSF) of China[61572232] ; National Natural Science Foundation (NSF) of China[61272073] ; key program of Natural Science Foundation of Guangdong Province[S2013020012865] ; Open Research Fund of Key Laboratory of Computer System and Architecture, Institute of Computing Technology, Chinese Academy of Sciences[CARCH201401] ; Fundamental Research Funds for the Central Universities ; Science and Technology Planning Project of Guangdong Province[2013B090200021]
WOS研究方向	Computer Science
WOS类目	Computer Science, Theory & Methods
WOS记录号	WOS:000395000100003
出版者	SPRINGER WIEN
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/7356
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Deng, Yuhui
作者单位	1.Jinan Univ, Dept Comp Sci, Guangzhou 510632, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, State Key Lab Comp Architecture, Beijing 100190, Peoples R China 3.Auburn Univ, Dept Comp Sci & Software Engn, Auburn, AL 36849 USA
推荐引用方式 GB/T 7714	Deng, Yuhui,Cai, Jieming,Jiang, Wen,et al. Employing dual-block correlations to reduce the energy consumption of disk drives[J]. COMPUTING,2017,99(3):235-253.
APA	Deng, Yuhui,Cai, Jieming,Jiang, Wen,&Qin, Xiao.(2017).Employing dual-block correlations to reduce the energy consumption of disk drives.COMPUTING,99(3),235-253.
MLA	Deng, Yuhui,et al."Employing dual-block correlations to reduce the energy consumption of disk drives".COMPUTING 99.3(2017):235-253.