Strip-oriented asynchronous prefetching for parallel disk systems

Yang LIU; Jian-zhong HUANG; Xiao-dong SHI; Qiang CAO; Chang-sheng XIE

doi:10.1631/jzus.C1200085

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Strip-oriented asynchronous prefetching for parallel disk systems

计算机与自动化 | Updated：2022-12-09

- Strip-oriented asynchronous prefetching for parallel disk systems
- Strip-oriented asynchronous prefetching for parallel disk systems
- 信息与电子工程前沿（英文） 2012年13卷第11期页码：799-815
- Affiliations：
  
  1.Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
  2.School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
- Author bio：
  
  Jian-zhong HUANG, E-mail:husthjz@mail.hust.edu.cn
- Funds：
  
  Project supported by the National Basic Research Program (973) of China (No. 2011CB302303), the National Natural Science Foundation of China (No. 60933002), and the Fundamental Research Funds for the Central Universities, China (Nos.2012QN100 and 2011TUS-136)
- DOI：10.1631/jzus.C1200085
  中图分类号： TP333
- 收稿：2012-03-29，
  
  修回：2012-10-12，
  
  纸质出版：2012-11
- Accepted：
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Strip-oriented asynchronous prefetching for parallel disk systems[J]. 信息与电子工程前沿（英文）, 2012,13(11):799-815.

Yang LIU, Jian-zhong HUANG, Xiao-dong SHI, et al. Strip-oriented asynchronous prefetching for parallel disk systems[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(11): 799-815.
Strip-oriented asynchronous prefetching for parallel disk systems[J]. 信息与电子工程前沿（英文）, 2012,13(11):799-815. DOI： 10.1631/jzus.C1200085.

Yang LIU, Jian-zhong HUANG, Xiao-dong SHI, et al. Strip-oriented asynchronous prefetching for parallel disk systems[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(11): 799-815. DOI： 10.1631/jzus.C1200085.

摘要

Abstract

Sequential prefetching schemes are widely employed in storage servers to mask disk latency and improve system throughput. However

existing schemes cannot benefit parallel disk systems as expected due to the fact that they ignore the distinct internal characteristics of the parallel disk system

in particular

data striping. Moreover

their aggressive prefetching pattern suffers from premature evictions and prolonged request latencies. In this paper

we propose a strip-oriented asynchronous prefetching (SoAP) technique

which is dedicated to the parallel disk system. It settles the above-mentioned problems by providing multiple novel features

e.g.

enhanced prediction accuracy

adaptive prefetching strength

physical data layout awareness

and timely prefetching. To validate SoAP

we implement a prototype by modifying the software redundant arrays of inexpensive disks (RAID) under Linux. Experimental results demonstrate that SoAP can consistently offer improved average response time and throughput to the parallel disk system under non-random workloads compared with STEP

ASP

and Linux-like SEQPs.

关键词

Keywords

references

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