AuthorsO. Bondarenko, K. De Schepper, I. Tsang, B. Briscoe, A. Petlund and C. Griwodz
TitleUltra-Low Delay for All: Live Experience, Live Analysis
AfilliationCommunication Systems
Publication TypeProceedings, refereed
Year of Publication2016
Conference NameProc. ACM Multimedia Systems; Demo Session
Date Published05/2016
ISBN Number978-1-4503-4297-1
KeywordsAlgorithms, Analysis, AQM, Congestion Avoidance, congestion control, Data Communication, Design, Evaluation, Internet, latency, networks, Performance, QoS, Scaling, tcp

This demo dramatically illustrates how replacing `Classic' TCP congestion control (Reno, Cubic, etc.) with a `Scalable' alternative like Data Centre TCP (DCTCP) keeps queuing delay ultra-low; not just for a select few light applications like voice or gaming, but even when a variety of interactive applications all heavily load the same (emulated) Internet access. DCTCP has so far been confined to data centres because it is too aggressive---it starves Classic TCP flows. To allow DCTCP to be exploited on the public Internet, we developed DualQ Coupled Active Queue Management (AQM), which allows the two TCP types to safely co-exist. Visitors can test all these claims. As well as running Web-based apps, they can pan and zoom a panoramic video of a football stadium on a touch-screen, and experience how their personalized HD scene seems to stick to their finger, even though it is encoded on the fly on servers accessed via an emulated delay, representing `the cloud'. A pair of VR goggles can be used at the same time, making a similar point. The demo provides a dashboard so that visitors can not only experience the interactivity of each application live, but they can also quantify it via a wide range of performance stats, updated live. It also includes controls so visitors can configure different TCP variants, AQMs, network parameters and background loads and immediately test the effect.

Citation KeyBondarenko16a:uld4all-demo