Dissecting Bufferbloat: Measurement and Per-Application Breakdown of Queueing Delay

International audienceWe propose a passive methodology to estimate the queueing delay incurred by TCP traffic, and additionally leverageDPI classification to breakdown the delay across differentapplications. Ultimately, we correlate the queueing delayto the performance perceived by the users of that applications, depending on their delay-sensitivity. We implementour methodology in Tstat, and make it available 1 as opensource software to the community. We validate and tune thetool, and run a preliminary measurement campaign basedon a real ISP traffic trace, showing interesting yet partlycounter-intuitive results