AN EMPIRICAL STUDY OF WEB QUALITY: MEASURING THE WEB FROM WROCLAW UNIVERSITY OF TECHNOLOGY CAMPUS

摘要

This work presents an empirical study on Web quality measurement. We evaluate the performance and reliability of the Web as perceived by the end users located at the Wroclaw University of Technology (WUT) campus The active measurements were performed periodically for a set of Web servers localized in different parts of the Internet, The experiments were performed by means of the Wing measurement infrastructure. Wing has been developed for probing, visualization and performance analysis of Web site from the user perspective,. Wing is a network measurement tool that measures end-to-end network path characteristics at the HTTP layer, The measurement results made by Wing are realistic as it uses a real Web browser, contrary to other measurement systems that use their own browsing mechanisms In this paper we used MS Explorer We investigate the correlation between a TCP connection's RTT and HTTP throughput to examine whether connections with shorter RTTs tend to transfer more data. Based on the measurements that we have analyzed so far, it is inconclusive to say that the round-trip time can be a good predictor of HTTP throughput in general The distribution of HTTP throughput versus TCP round-trip time as seen from Wroclaw can be described using the power law.