C3: Internet-Scale Control Plane for Video Quality Optimization

Authors: Aditya Ganjam, Junchen Jiang, Xi Liu, Vyas Sekar, Faisal Siddiqui, Ion Stoica, Jibin Zhan, Hui Zhang

Download Paper


As Internet video goes mainstream, we see increasing user expectations for higher video quality and new global policy requirements for content providers. Inspired by the case for centralizing network-layer control, we present C3, a control system for optimizing Internet video delivery. The design of C3 addresses key challenges in ensuring scalability and tackling data plane heterogeneity. First, to ensure scalability and responsiveness, C3 introduces a novel split control plane architecture that can tolerate a small increase in model staleness for a dramatic increase in scalability. Second, C3 supports diverse client-side platforms via a minimal clientside sensing/actuation layer and offloads complex monitoring and control logic to the control plane. C3 has been operational for eight years, and today handles more than 100M sessions per day from 244 countries for 100+ content providers and has improved the video quality significantly. In doing so, C3 serves as a proof point of the viability of fine-grained centralized control for Internetscale applications. Our experiences reinforce the case for centralizing control with the continued emergence of new use case pulls (e.g., client diversity) and technology pushes (e.g., big data platforms).

Contenu associé

Authors: Daniel Kang, John Emmons, Firas Abuzaid, Peter Bailis, Matei Zaharia

Authors: Zhao Zhang, Kyle Barbary, Frank Austin Nothaft, Evan R. Sparks, Oliver Zahn, Michael J. Franklin, David A. Patterson, Saul Perlmutter

Authors: Anand Padmanabha Iyer, Li Erran Li, Ion Stoica

Authors: Frank Austin Nothaft, Matt Massie, Timothy Danford, Zhao Zhang, Uri Laserson, Carl Yeksigian, Jey Kottalam, Arun Ahuja, Jeff Hammerbacher, Michael Linderman, Michael J. Franklin, Anthony D. Joseph, David A. Patterson

Authors: Samia N. Naccache, Scot Federman, Narayanan Veeeraraghavan, Matei Zaharia, Deanna Lee, Erik Samayoa, Jerome Bouquet, Alexander L. Greninger, Ka-Cheung Luk, Barryett Enge, Debra A. Wadford, Sharon L. Messenger, Gillian L. Genrich, Kristen Pellegrino, Gilda Grard, Eric Leroy, Bradley S. Schneider, Joseph N. Fair, Miguel A. Martı´nez, Pavel Isa, John A. Crump, Joseph L. DeRisi, Taylor Sittler, John Hackett, Jr., Steve Miller, Charles Y. Chiu

Authors: Matt Massie, Frank Nothaft, Christopher Hartl, Christos Kozanitis, André Schumacher, Anthony D. Joseph, David A. Patterson