对象存储系统的均衡调度算法  

Balanced Dispatching Algorithm in Object-Based Storage System

作　　者：张军 

机构地区：[1]东华理工大学南昌校区软件学院,南昌330013

出　　处：《计算机工程》2010年第24期57-58,61,共3页Computer Engineering

摘　　要：分析存储设备节点的负载特征,给出描述负载的扩展模型,以存储系统的实时负载为基础,提出一种对象的设备选择算法,使对象在存储节点间合理分布,有效调度存储节点的负载能力。仿真结果表明,在I/O请求依指数分布到达的条件下,启用负载分布算法能使系统负载均衡地分布在各存储节点间,有效降低负载不均衡现象。This paper analyzes the load characteristics of storage devices, and proposes the expansion model for load, An object distribute module is discussed, real-time load info are collected for an object distribution algorithm, which make the objects distribute in a reasonable way, and dispatch 1/O capabilities effectively among storage nodes. Simulation results show that the algorithm enables the loads to distribute balanced, and reduce the emergence of load imbalance effectively.

关 键 词：对象存储系统 属性扩展 负载均衡 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]