Section: New Software and Platforms

Where is the fault?

Contributors: Srikanth Sundaresan (Georgia Tech), Nick Feamster (Georgia Tech), Renata Teixeira

Where's The Fault? (WTF) is a system that localizes performance problems in home and access networks. We implement WTF as custom firmware that runs in an off-the-shelf home router. WTF uses timing and buffering information from passively monitored traffic at home routers to detect both access link and wireless network bottlenecks. We presented a demo of WTF at the ACM SIGCOMM conference in 2014. [4]