一种动态自调节的SDN控制器负载均衡算法

摘要

A dynamic self-adjusting load balancing method based on switch migration mechanism is proposed to solve the problem that the static configuration between switch and controller can cause the load imbalance among distributed controllers,considering of the controller real-time load and the processing capacity of its own.The algorithm can automatically select the under-load controllers according to the load of the whole system,which ensured the controller of high performance is allocated to more load.By this way,the load imbalance problem among multiple controllers is solved.The experimental results show that the method can effectively improve the average throughput and reduce the average response time of the controller,achieving better load balancing effect.%为了解决交换机与控制器之间的静态配置会造成控制器间负载的不均衡问题，综合考虑控制器的实时负载和其自身的处理能力，提出一种基于交换机迁移机制的动态自调节的负载均衡算法。该算法可根据系统整体的负载自动选择分配负载的控制器，保证性能高的控制器分配到较多的负载，从而解决多控制器间负载不均衡问题。实验表明，该算法能有效提高系统平均吞吐量及降低平均响应时延，达到更好的负载均衡效果。