Load Balancing in PFC-Enabled Datacenter Networks
Jinbin Hu, Chaoliang Zeng, Zilong Wang, Hong Xu, Jiawei Huang, Kai Chen
Abstract
In Priority Flow Control (PFC) enabled datacenter networks (DCNs), PFC is inevitably triggered due to bursty traffic even with end-to-end congestion control. Load balancing as a complementary mechanism to transport protocols can make rerouting decisions in time to alleviate PFC’s head-of-line (HoL) blocking problem. However, prior solutions designed for lossy DCNs do not work well in PFC-enabled networks, because the unreliable rerouting signals such as separate local queue length, round-trip time (RTT), explicit congestion notification (ECN), and link load cannot timely and correctly reflect PFC pausing.
Topics & Concepts
Computer scienceLoad balancing (electrical power)Computer networkMathematicsGeometryGridCloud Computing and Resource ManagementSoftware-Defined Networks and 5GIoT and Edge/Fog Computing