带外架构下的存储性能虚拟化  

Storage Performance Virtualization Under Out-of-Band Structure

作　　者：黄荣荣[1] 薛巍[1] 舒继武[1] 郑纬民[1] 

机构地区：[1]清华大学高性能计算研究所,北京100084

出　　处：《小型微型计算机系统》2007年第6期1139-1143,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60473101)资助;国家"九七三"重点基础研究发展规划项目基金项目(2004CB318205)资助;国家"八六三"高技术研究发展计划项目基金重点项目(2004AA111120)资助

摘　　要：介绍了一个带外存储性能虚拟化系统SuperStore,它利用反馈控制的适应性方法,自动实现存储系统对多台主机的有差别服务;能根据系统负载变化快速调整控制策略;在主机竞争磁盘的情况下能显著改善磁盘的总体性能.实验表明,Super-Store带来的额外开销仅为约6‰;在两台主机的4k大小顺序写数据流竞争单块磁盘的情况下,SuperStore相比普通带外存储虚拟化系统可以使磁盘的带宽改善多达9倍.This paper addresses an out-of-band storage performance virtualization system named SuperStore, which employs an adaptive method based on feedback control. SuperStore can swiftly adjust its control policy when the disk load changes. When hosts are contending for a single disk, SuperStore can remarkably improve the disk performance. Experiments show that SuperStore imposes only neglectable extra cost with the ratio about 6%0, and that when two hosts contend for one disk with sequential 4k size writing data flow, SuperStore can keep bandwidth nine times as much as those common out-of-band virtualization systems.

关 键 词：存储虚拟化 带外 性能虚拟化 反馈 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]