关键词: 服务器集群, 负载均衡, OPNET

Abstract:

Aiming at some existing disadvantages of load balance algorithm that the load balance algorithm can not reflect the situation of servers' load correctly and that the manual weight setting is inflexible,this paper puts forward an improved and new load balancing algorithm named adaptive weighted least-load algorithm.Server performance factors are considered,and the weight is dynamically adjusted according to the load of each server to make sure that the load of the server cluster is balanced.Simulation by OPNET indicates that the new algorithm can reduce the service delay,improve the average response rate and balance servers' load effectively compared with existing load balance algorithm.

Key words: server cluster;load balancing;OPNET