Distributed Active Measurement of Internet Queuing Delays

Despite growing link capacities, over-dimensioned buffers are still causing, in the Internet of the second decade of the third millennium, hosts to suffer from severe queuing delays (or bufferbloat). While maximum bufferbloat possibly exceeds few seconds, it is far less clear how often this maximum is hit in practice. This paper reports on our ongoing work to build a spatial and temporal map of Internet bufferbloat, describing a system based on distributed agents running on PlanetLab that aims at providing a quantitative answer to the above question.