一种基于健康度的负载均衡算法在图书馆多媒体中的应用  

Application of a Healthy Load Balancing Method in Library Multimedia Service

作　　者：郭政慧[1] 

机构地区：[1]河南理工大学计算机科学与技术学院,焦作454000

出　　处：《现代图书情报技术》2012年第5期87-90,共4页New Technology of Library and Information Service

基　　金：河南省重点攻关基金项目"物联网终端核心部件技术研究及实现"(项目编号:122102210117)的研究成果之一

摘　　要：为解决图书馆中流媒体服务集群中用户数量多和负载率不平衡的问题,研究多种负载均衡算法,针对图书馆多媒体这一特点,提出一种健康度检测和区间溢出预估的动态负载均衡算法。该算法采用历史负载率计算采样间隔,采样后划分负载率区间,然后依据集群组建模式给区间加权和分配健康度,并结合区间溢出触发计算负载率,均衡多媒体服务集群负载。There are several problems existing in streaming media service in library, such as mass users and the unbalanced load. The paper researches a variety of load balancing methods, then presents a dynamic load balancing method. The method calculates utilization rates of each service by using dynamic feedback principle,which combines with historical data to select the suitable sampling interval, then divides appropriate space of resources utilization rate according to weighted round - robin sched- uling and interval random round -robin scheduling, finally achieves concurrent access to resources for the numerous users.

关 键 词：负载均衡 流媒体 健康度 

分 类 号：G250.72[文化科学—图书馆学]