基于软交换的异构集群媒体服务器中一种LRV负载均衡算法  

A Limited Resource Vector Load-Balancing Algorithm for Softswitch-Based Heterogeneous Clustered Media Server

作　　者：吴乃星[1] 廖建新[1] 杨孟辉[1] 朱晓民[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室

出　　处：《电子学报》2005年第10期1745-1750,共6页Acta Electronica Sinica

基　　金：高等学校博士学科点专项科研基金(No.20030013006);国家移动通信产品研究开发专项基金(下一代移动智能网络的开发及应用);电子信息产业发展基金(下一代网络核心业务平台);电子信息产业发展基金(移动通信增值服务平台及应用系统)

摘　　要：针对基于软交换的集群媒体服务器的系统特征,本文提出了一种LRV(Limited Resource Vector)负载均衡算法,该算法考虑了系统中资源的协调使用并有效防止了系统性能的剧烈变化.通过在集群媒体服务器负载均衡系统Petri网模型上的大量仿真模拟,对LRV负载均衡算法与其他传统负载均衡算法在异构环境下的均衡能力、系统吞吐量、系统响应时间和性能平稳性几个方面做了比较和分析.结果表明,LRV算法具有优越的性能,对集群媒体服务器的异构环境有良好的适应能力.Based on the system feature of softswitch-based heterogeneous clustered media server,this paper proposed a limited resource vector load-balancing algorithm. Harmonious usage of system resources was considered and violent shaking of the system performance was avoided in the algorithm. A lot of simulations on the Petri net model of balance system had been conducted and the algorithm had been compared with some traditional algorithms on balancing ability for heterogeneity, system throughput, request response time, and performance stability. Results of simulation experiments show that the algorithm can make system get higher performance and it has excellent ability to deal with the heterogeneity of clustered media server.

关 键 词：负载均衡算法 异构集群 媒体服务器 软交换 随机PETRI网 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]