User-perceived web QoS measurement and evaluation system

Quality of service(QoS) is so important for content Providers that they constantly face the challenges of adapting their web servers to support rapid growth and customer's demand for more reliable and differentiated services. A web QoS measurement and evaluation system(WQMES) was designed and implemented based on in-depth research on the key techniques of web QoS. The prototype implementation of WQMES and the performance evaluation criteria based on performance aggregation are carefully introduced. Our contribution is presenting a single and quantitative result combining several web performance metrics. Experiment results indicate the scalable WQMES can do the real-time detection on web QoS from the end user's perspective. The performance aggregation approach is a bran-new idea, and of a definite practicability.