eXpressSFU: Toward Super-Scalable Video Conferencing with SmartNICs
Published in USENIX Symposium on Networked Systems Design and Implementation (NSDI), 2026
Recommended citation: T. Tran, S. M. H. Hosseini, S. Kim, K. Lee, N. Bui, D. Grunwald, S. Ha. "eXpressSFU: Toward Super-Scalable Video Conferencing with SmartNICs." USENIX NSDI, 2026. https://www.usenix.org/conference/nsdi26/presentation/tran
A WebRTC SFU that offloads the media data plane — SRTP crypto, packet forwarding, and simulcast/SVC layer selection — onto the Arm cores of an NVIDIA BlueField-2 SmartNIC, cutting media-packet latency 8× and serving 3× more concurrent users than the software baseline.