基于SED的自适应负载均衡研究

Research on Adaptive Load-balancing Based on SED

负载均衡是提高集群系统性能的重要技术,负载均衡技术可以在当前的网络应用结构上有效提高服务器处理能力,使系统在现有的结构下能够满足更多的用户同时访问所提供的服务,负载均衡算法是集群任务分配的核心。分析了影响服务节点性能的主要因素,基于SED算法提出了一种负载均衡的自适应机制,根据服务节点的性能状况自动调整权值。在Linux平台下进行了实验,测试结果显示该算法优于静态算法。

Load-balancing is an important technology for improving performance of cluster systems.Load balancing can enhance servers' ability to process data,and let more clients acquire services at the same time under the current system mode.The core of task distribution is the load balancing algorithm.This paper analyses the main factors which affects the performance of service nodes,and proposes a new adaptive mechanism based on SED which adjusts weights according to the performance status of service nodes automatically.From the simulation experiments in Linux platform,the conclusion is drawn that it is more effective than static algorithm.