Fork: A Dual Congestion Control Loop for Small and Large Flows in Datacenters
Yuan Liu, Wenxin Li, Yulong Li, Lide Suo, Xuan Gao, Xin Nan Xie, Sheng Chen, Ziqi Fan, Wenyu Qu, Guyue Liu · 2025
Many existing transport designs aim to deliver ultra-low latency and high bandwidth for applications in high-speed datacenter networks. However, almost all of them intertwine the control of small and large flows using the same control entity (e.g., sender or receiver) and congestion feedback signal (e.g., ECN or credit), thus bringing significant performance impairments. By contrast, we seek to decouple the rate control of small flows from that of large ones.