冗余交叉磁盘阵列性能研究  

Performance Analysis of Redundant Data Interleaving Disk Arrays

作　　者：祝夭龙 裴先登[1] 周学仁[1] 杨荫溥 

机构地区：[1]航天工业总公司706所,华中理工大学

出　　处：《计算机工程与设计》1995年第2期3-12,共10页Computer Engineering and Design

基　　金：国防科工委基金

摘　　要：本文建立了冗余交叉磁盘阵列的队列模型，单盘和同步交叉磁盘阵列采用Ｍ／Ｇ／１排队模型，异步交叉磁盘阵列采用Ｆｏｒｋ／Ｊｏｉｎ排队模型，并利用这些模型对冗余交叉磁盘阵列的性能进行了分析，结果表明在系统请求率较大时，同步交叉磁盘阵列的性能大大优于异步交叉磁盘阵列，而系统请求率较小时，异步交叉磁盘阵列的性能与同步交叉磁盘阵列的性能差别不大，但随系统请求率和数据块的增大差别越来越大。This paper submits the queueing models of the redundant interleaving disk arrays. M / G / 1 model is applied to analyze the perfonnance of single disk and synchronized disk arrays, and a new Fork / Join queue model for asynchronized disk arrays. The results present that the perforinance of asynchronized disk arrays is more worse than that of synchronized disk arrays for high host requesting rate, for very low host requesting rate,the performance difference between the synchronized and asynchronized disk arrays is small and it increases with the host requesting rate and data size increasing.

关 键 词：磁盘 性能分析 排队模型 冗余磁盘阵列 

分 类 号：TP333.35[自动化与计算机技术—计算机系统结构]