基于I/O通道的存储系统性能模型  

I/O path based performance model for storage systems

作　　者：张继征[1] 贾惠波[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《清华大学学报（自然科学版）》2006年第11期1824-1827,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"重点基础研究项目(G19990330)

摘　　要：基于数据存储I/O通道,为“服务器存储”和“数据中心”两种典型存储结构建立排队模型,利用模型对比分析两种结构的性能特点。结果表明:与服务器存储相比,数据中心的“用户绕过服务器直接访问存储设备”结构,避免了服务器成为系统瓶颈,提高了存储设备利用率,使系统总吞吐量有较大幅度增长。实验证明:该模型可有效地反映实际存储系统的性能变化趋势,并给出大致性能评价。This article presents a modeling method based on common I/O paths to describe current storage architectures. Queuing network models are presented for server storage systems and Data Centers, Data Centers use an IP based storage system in which storage devices can be accessed directly by hosts without passing through a server. Simulations and experimental results show that Data Centers provide much higher performance than server storage systems. The I/O path based performance models are also shown to be effective for analyzing and evaluating different storage systems.

关 键 词：网络存储 性能模型 排队网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]