一种测控通信平台的动态负载平衡服务研究

为了提高基于UDP协议的测控通信平台的稳定性、实肘性和数据处理能力，建立了动态负载平衡模型，提出了加权负载因子负载平衡算法。该算法利用CPU的使用率、当前的活动会话数、内存的使用率和剩余任务数来衡量服务器的负载，计算任务队列的剩余任务耗费值，并以此确定服务器的负载状态；进一步说明了负载平衡频率和负载平衡粒度控制策略，通过剩余任务耗费值的阈值、阈长和主辅关系的解除时机两个方面控制负载平衡频率，通过任务迁移量来控制负载平衡粒度。最后通过实验证明了该算法的有效性。

Research on Dynamic Load Balancing Service for a Monitoring and Communication Platfom

A dynamic load balancing mode and a weighting load factor algorithm of load balancing are proposed,aimed at improving reliability,real-time and data-handling capacity of the monitoring and communication platform based on UDP.The proposed algorithm makes use of the CPU utilization ratio,current active session number,memory utilization ratio,and remainder task number to definite remainder task consumption value and appraise server load state.At the same time,it also explains the questions of the load balancing frequency and the load balancing granularity,the load balancing frequency is controlled through two aspects: threshold value,threshold length of surplus duty consumption and opportunity of relieving the host auxiliary relations,the load balance granularity is controlled through the duty migration quantity.At last,experimental results prove the effectiveness of the proposed algorithm.