Dynamic file prefetching scheme based on file access patterns in VIA-based parallel file system

被引：0

作者：

Lee, YY ^{[1
]}

Kim, CY

Seo, DW

机构：

[1] Kyungpook Natl Univ, Dept Elect Engn, Taegu, South Korea

[2] ETRI, Comp Syst Res Dept, Taejon, South Korea

来源：

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS | 2002年 / E85D卷 / 04期

关键词：

parallel file system; prefetching; virtual interface architecture; cluster systems;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A parallel file system is normallly used to support excessive file requests from parallel applications in a cluster system, whereas prefetching is useful for improving the file system performance. This paper proposes dynamic file prefetching scheme based on file access patterns, named, table-comparison prefetching policy, that is particularly suitable for parallel scientific applications and multimedia web services in a VIA-based parallel file system. VIA relieves the communication overhead of traditional communication protocols, such as TCP/IP. The proposed policy introduces a table-comparison method to predict data for prefetching. In addition, it includes an algorithm to determine whether and when prefetching is performed using the current available I/O bandwidth. Experimental results confirmed that the use of the proposed prefetching policy in a VIA-based parallel HIP system produced a higher file system performance for various file access pattern.

引用

页码：714 / 721

页数：8

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