DPSP:一种基于内容的客户请求调度策略

DPSP: A CLIENT REQUEST SCHEDULING POLICY BASED ON WEB CONTENT

摘要: 改善执行服务器的性能对于提高 Web服务器的服务质量至关重要 .在分析执行服务器的线程数量、调度策略、服务器响应时间和客户请求到达率间相互关系的基础上 ,提出了动态优先级调度策略 DPSP(dynam icpriority scheduling policy) ,它根据客户请求内容的重要程度有效地组织服务器的请求执行顺序 ,达到提高请求服务质量的目的 .与先来先服务 FCFS(first come first service)、短请求优先 SRF (short request first)和 DEDF(dynamic earliest deadline first)策略进行模拟比较表明 :DPSP策略以较小的响应延迟增量为代价 ,提高了 WWW的服务质量

Abstract: Improvement of the performance of server is observed to have a significant impact on web server QoS. Based on the analysis of the relationship among response time, client request arrival rate, thread number, and scheduling policy, dynamic priority scheduling policy （DPSP） is proposed to change the order of server process request. Compared with the first come first service （FCFS）, short request first （SRF）, and dynamic earliest deadline first （DEDF）, the simulation results of the DPSP show that it can enhance the WWW QoS by increasing only little response time.