Web QoS Control Using Fuzzy Adaptive PI Controller
This paper researches on QoS (Quality of Service) control problems for web servers. A Fuzzy Adaptive PI Control system is proposed in this paper. Via a basic PI controller, the system can dynamically adjust the ratio of request-accepting time in a control period, in order to turn down requests when the server is overloaded. Considering that in a real Internet environment, the network and server load are continually varying in an uncertain range, we use a fuzzy control approach to tune the PI parameters adaptively. Details of the fuzzy control approach are elaborated in this paper. Simulation results demonstrate that in a stable server load environment, the Fuzzy Adaptive PI Control system works as well as the basic PI controller, but it acts much more stably and rapidly dealing with fluctuating loads.
Web Server QoS PI Controller Fuzzy Adaptive
Fuquan Tian Wenbo Xu Jun Sun
School of Information Engineering Jiangnan University Wuxi, P.R.China
国际会议
香港
英文
72-75
2010-08-12（万方平台首次上网日期，不代表论文的发表时间）