007: Democratically Finding The Cause of Packet Drops
Behnaz Arzani, Selim Ciraci, Luiz F. O. Chamon, Yibo Zhu, Hingqiang Liu, Jitu Padhye, Boon Thau Loo, Geoff Outhred · arXiv (Cornell University) · 2018
Network failures continue to plague datacenter operators as their symptoms may not have direct correlation with where or why they occur. We introduce 007, a lightweight, always-on diagnosis application that can find problematic links and also pinpoint problems for each TCP connection. 007 is completely contained within the end host. During its two month deployment in a tier-1 datacenter, it detected every problem found by previously deployed monitoring tools while also finding the sources of other problems previously undetected.