基于负载均衡的云服务资源配置策略研究

Cloud Service Resource Disposition Strategy Based on Load Balancing

本文针对云计算环境下服务资源配置过程中出现的负载不均衡问题,在分析云计算环境下服务资源配置的基础上,研究了现有的负载均衡策略,定义服务资源配置过程中的相关要素,给出云计算环境下服务资源配置的负载均衡问题模型,提出了双加权最小连接负载均衡策略,给出相应的定义和过程。该策略针对批处理任务,用相应的权值分别表示各个服务资源的处理性能和各个服务需求的规格,利用贪心算法进行求解,在CloudSim平台下与其它策略进行了对比,实验表明该策略能够发挥更好的作用。

According to the load unbalancing problems of service resources disposition in the cloud computing environment,based on analysis of services resource disposition in the cloud computing environment,firstly the existing load balancing are studied strategies and relevant elements in the process of services resource disposition are defined.Then the load balancing model of services resource disposition is given in cloud computing environment.At last,a double weighted least connection load balancing is proposed,giving the corresponding definitions and procedures.The suggested strategy considers the needs of users in a batch mode,and gives the corresponding weights to the size of each task and the capacity of each service resource.Furthermore,the greedy algorithm is used to solve the problem of service resources disposition.In the simulation,the suggested strategy is compared with other strategies in the simulator CloudSim,the experiments show that the strategy can play a better role.