基于负载权值的负载均衡算法

为解决服务器集群负载分配不均的问题,综合考虑节点负载和节点性能信息,提出了基于负载权值的动态反馈负载均衡算法。利用负载权值选择分配负载的节点集合,保证性能高的节点分配到较多的负载;引入负载差值计算节点分配负载的概率,使得负载的分布更加均匀;通过负载增量及负载修正保持系统的稳定性。使用OPNET仿真软件进行测试,结果表明该算法能有效提高负载均衡效率,有较好的负载均衡效果。

Load balancing algorithm based on load weights

In order to solve the problem of uneven distribution of load in server cluster, considering the load and performance information of nodes, this paper presented a load balancing algorithm with dynamic feedback based on the load weights. Using load weights to help choosing nodes for load distribution, the algorithm assured that high performance nodes got more load. And it brought load difference to calculate the probabilities of those nodes to make the distribution of load uniformly. By using load increment and load amendment, the system become stability. Using the OPNET simulation software for testing, the results show that the algorithm can availably improve the efficiency of load balancing and has good load balance result.