A new self-adapting admission control algorithm for differential service in Web clusters |
| |
Authors: | Email author" target="_blank">Liu?An-fengEmail author Chen?Zhi-gang Long?Guo-ping |
| |
Institution: | (1) College of Information Science and Engineering, Central South University, 410083 Changsha, Hunan, China |
| |
Abstract: | A new admission control algorithm considering the network self-similar access characteristics is proposed. Taking advantage of the mathematical model of the network traffic admission control which can effectively overcome the self-similar characteristics of the network requests, through the scheduling of the differential service queue based on priority while at the same time taking into account various factors including access characteristics of requests, load information, etc, smoothness of the admission control is ensured by the algorithm proposed in this paper. We design a non-linear self- adapting control algorithm by introducing an exponential admission function, thus overcomes the negative aspects introduced by static threshold parameters. Simulation results show that the scheme proposed in this paper can effectively improve the resource utilization of the clusters, while at the same time protecting the service with high priority. Our simulation results also show that this algorithm can improve system stability and reliability too. |
| |
Keywords: | Web cluster admission control differential service self-similar self-adapting |
本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录! |
|