In this study, we characterize user sessions of the popular multimedia Web 2.0 site, YouTube. We observe
YouTube user sessions by making measurements from an edge network perspective. Several characteristics of user
sessions are considered, including session duration, inter-transaction times, and the types of content transferred by
user sessions. We compare and contrast our results with "traditional" Web user sessions. We found that YouTube
users transfer more data and have longer think times than traditional Web workloads. These differences have
implications for network capacity planning and design of next generation synthetic Web workloads.
This paper experimentally examines the performance of streaming media applications over a CDMA2000 1xEV-DO
network. The performance of streaming in a cellular network is tested across three different levels of mobility,
two applications, and the two transport layer protocols, TCP and UDP. Findings of this study are that streaming
applications are impacted more by sources of interference such as high-rise buildings than by increased velocity.
Also, when the mobile client is stationary, high data rates and high video quality are consistently achieved. We
also find that for the streaming applications considered, UDP streams outperform TCP streams, consistently
achieving higher bandwidth.