SRCC: Sub-RTT Congestion Control for Lossless Datacenter Networks

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NETL
NSTL
IEEE

外文摘要：To meet the stringent requirements of industrial applications, modern Ethernet datacenter networks widely deployed with remote direct memory access (RDMA) technology and priority-based flow control (PFC) scheme aim at providing low latency and high throughput transmission performance. However, the existing end-to-end congestion control cannot handle the transient congestion timely due to the round-trip-time (RTT) level control loop, inevitably resulting in PFC triggering. In this article, we propose a Sub-RTT congestion control mechanism called SRCC to alleviate bursty congestion timely. Specifically, SRCC identifies the congested flows accurately, notifies congestion directly from the hotspot to the corresponding source at the sub-RTT control loop and adjusts the sending rate to avoid PFC's head-of-line blocking. Compared to the state-of-the-art end-to-end transmission protocols, the evaluation results show that SRCC effectively reduces the average flow completion time (FCT) by up to 61%, 52%, 40%, and 24% over datacenter quantized congestion notification (DCQCN), Swift, high precision congestion control (HPCC), and photonic congestion notification (PCN), respectively.

外文关键词：

DelaysThroughputTransient analysisBandwidthProcess controlInformaticsEthernetTransport protocolsReal-time systemsPhotonics

作者：

Jinbin Hu、Shuying Rao、Min Zhu、Jiawei Huang、Jianxin Wang、Jin Wang

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作者单位：

School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, China

College of Information Science and Technology, Zhejiang Shuren University, Hangzhou, China

Central South University, Changsha, China

Sanya Institute, Hunan University of Science and Technology, Sanya, China

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出版年：

2025

DOI：

10.1109/TII.2024.3495759

IEEE transactions on industrial informatics

ISSN：

年,卷(期)：2025.21(4)

参考文献量24