基于反馈周期的网络负载均衡算法  

Network load balancing algorithm based on feedback cycle

作　　者：禹玮[1] 徐增敏[1] 易云飞[1,2] 傅佑铭[1] 

机构地区：[1]武汉大学计算机学院国家多媒体软件工程技术研究中心,湖北武汉430072 [2]河池学院计算机与信息工程学院,广西宜州546300

出　　处：《计算机工程与设计》2016年第4期841-846,共6页Computer Engineering and Design

基　　金：广西自然科学基金项目(2013GXNSFBA019282);广西高等学校科研基金项目(KY2015YB254);国家级大学生创新创业训练计划基金项目(201410605055);广西自治区级大学生创新创业基金项目(201410605055;201410605056;201410605057)

摘　　要：针对动态反馈算法中反馈过程可能造成过多额外负载的问题,提出一种基于反馈周期的网络负载均衡算法。周期性地向后端服务器收集信息,对节点的实时负载进行评估,结合节点初始性能,以负载容余平衡为目标指导请求分配;建立关于反馈周期的BP网络,以集群的利用率和系统的负载失衡度为输入,对信息反馈周期进行动态调整。用优化网络工程工具进行仿真,仿真结果表明,该算法有效减少了平均响应时间,提高了系统的性能。The feedback process of dynamic feedback algorithm may cause too much extra load,a network load balancing algorithm based on feedback loop was proposed.Information was collect from backend server periodically,the real-time load of node was evaluated,combined with the node initial performance,aiming at load capacity balance,distribution was requested.The BP networks for feedback cycle were established,and the cluster utilization and system load unbalance degree were taken as inputs,information feedback cycle was dynamically adjusted.Optimized network engineering tool was used for simulation.Results show that the algorithm is effective on reducing the average response time,the performance of the system is improved.

关 键 词：服务器集群 负载均衡 反馈周期 BP网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]