Abstract
Internet streaming is responsible for a significant fraction of Internet traffic. It has been reported to account up to 70% of peak traffic in North American fixed access networks, and this figure is expected to reach 80% by 2020 [1]. Regarding such a killer service of the Internet, much has been discussed regarding if and how video hosting providers violate or may violate neutrality principles, in order to give users a “better” service compared to their competitors or other services. In this paper, we provide a contribution to this discussion studying three video hosting providers (i.e. YouTube, Vimeo, and Dailymotion). Specifically, we analyze their delivery infrastructures, including where the servers that provide videos are located, and the performance from a user viewpoint. To assess the performance, we measure throughput and RTT as experienced by users watching real videos of different popularity from several locations around the world and at different day hours.We uncover the performance differences of these providers as a function of the different variables under control and move a step forward to understand what causes such differences. We also study the changes in the infrastructures and related performance over time, performing different measurement campaigns over different years.Our results allow to understand what are the real performance users currently get from these providers and if the performance differences observed can be due or considered as a violation of network neutrality principles.
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