CAJ | 학술논문

为解决服务器集群负载分配不均的问题，根据用户访问的请求类型，综合考虑用户历史请求引起的负载增量和服务器节点性能，提出了基于预测机制的分级负载均衡算法。负载均衡节点根据用户访问的请求类型建立一次指数平滑预测模型，对相应请求类型引起的负载进行预测，并将预测负载划分为低负载、正常负载、重负载等三个负载等级，根据负载等级对用户请求进行调度，从而实现负载均衡。使用OPNET仿真软件进行测试，结果表明该算法能有效提高负载均衡效率，有较好的负载均衡效果。
위해결복무기집군부재분배불균적문제，근거용호방문적청구류형，종합고필용호역사청구인기적부재증량화복무기절점성능，제출료기우예측궤제적분급부재균형산법。부재균형절점근거용호방문적청구류형건립일차지수평활예측모형，대상응청구류형인기적부재진행예측，병장예측부재화분위저부재、정상부재、중부재등삼개부재등급，근거부재등급대용호청구진행조도，종이실현부재균형。사용OPNET방진연건진행측시，결과표명해산법능유효제고부재균형효솔，유교호적부재균형효과。
In order to solve the problem of uneven distribution of load in server cluster, considering the increasing load and performance of server nodes based on the type of users’history requests, a classified load balancing algorithm based on prediction mechanism is proposed. Load balancing node establishes single exponential smoothing model to forecast load based on the type of users’requests, and divides the predicted load with three classes:low load, normal load and heavy load. Load balancing node performs the scheduling and management based on the predicted load, and realizes load balancing of the system. Using the OPNET simulation software for testing, the result of simulation shows that the algo-rithm can effectively improve the efficiency of load balancing, and has a better load balancing result.