中文摘要：

目前采用集群技术是实现大规模视频服务的主要手段．本文在通过分析Linux服务器集群系统（LVS）的特点，视频服务器集群系统的负载调度研究中，针对请求的服务时间变化大的特点，提出一种动态反馈负载平衡算法，它结合内核中的加权连接调度算法，根据动态反馈回来的负载信息来调整服务器的权值，从而有效地解决服务器间的负载不平衡问题，提高了系统的吞吐率，使整个集群的综合负载率随规模增大而呈平滑增长．

英文摘要：

Nowadays,Server Cluster is an effective method of setting up massive video server. An implementation method of video server cluster system is presented in this paper by analyzing the Linux virtual server. By studying the scheduler of load balancing in the cluster-based system, this paper presents a dynamic-feedback algorithm for load balancing in order to smooth extremely high variable traffic. Combining the weighted connection scheduling algorithms, it can adapt the weights according to dynamic-feedback load information, therefore it can effectively solve the load imbalance problem among the servers and increase the throughput of the whole system,which make the rate of the whole cluster increase smoothly with the scale enlarging.