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CLC number: TP333
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2012-10-12
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Strip-oriented asynchronous prefetching for parallel disk systems
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Yang Liu, Jian-zhong Huang, Xiao-dong Shi, Qiang Cao, Chang-sheng Xie. Strip-oriented asynchronous prefetching for parallel disk systems[J]. Journal of Zhejiang University Science C, 2012, 13(11): 799-815.
@article{title="Strip-oriented asynchronous prefetching for parallel disk systems",
author="Yang Liu, Jian-zhong Huang, Xiao-dong Shi, Qiang Cao, Chang-sheng Xie",
journal="Journal of Zhejiang University Science C",
volume="13",
number="11",
pages="799-815",
year="2012",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.C1200085"
}
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%T Strip-oriented asynchronous prefetching for parallel disk systems
%A Yang Liu
%A Jian-zhong Huang
%A Xiao-dong Shi
%A Qiang Cao
%A Chang-sheng Xie
%J Journal of Zhejiang University SCIENCE C
%V 13
%N 11
%P 799-815
%@ 1869-1951
%D 2012
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1200085
TY - JOUR
T1 - Strip-oriented asynchronous prefetching for parallel disk systems
A1 - Yang Liu
A1 - Jian-zhong Huang
A1 - Xiao-dong Shi
A1 - Qiang Cao
A1 - Chang-sheng Xie
J0 - Journal of Zhejiang University Science C
VL - 13
IS - 11
SP - 799
EP - 815
%@ 1869-1951
Y1 - 2012
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1200085
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, SP, ASP, and Linux-like SEQPs.
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