Web server support for tiered services

作     者：Bhatti, N Friedrich, R 

作者机构：Hewlett Packard Res Labs Internet Syst & Applicat Lab Palo Alto CA 94304 USA 

出 版 物：《IEEE NETWORK》 (IEEE Network)

年 卷 期：1999年第13卷第5期

页      面：64-71页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Web server Network servers Quality of service Delay IP networks Business Web and internet services Bandwidth Jitter Proposals 

摘      要：The evolving needs of conducting commerce using the Internet requires more than just network quality of service mechanisms for differentiated services. Empirical evidence suggests that overloaded servers can have significant impact on user perceived response times. Furthermore, FIFO scheduling done by servers can eliminate any QoS improvements mode by network-differentiated services. Consequently, server QoS is a key component in delivering end to end predictable, stable, and tiered services to end users. This article describes our research and results for WebQoS, an architecture for supporting server QoS. We demonstrate that through classification, admission control, and scheduling, we can support distinct performance levels For different classes of users and maintain predictable performance even when the server is subjected to a client request rate that is several times greater than the server s maximum processing rate.