Journal
IEEE-ACM TRANSACTIONS ON NETWORKING
Volume 26, Issue 3, Pages 1376-1389Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNET.2018.2830414
Keywords
Data center networks; packet loss; transport loss recovery; multi-path transport
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To achieve low TCP flow completion time (FCT) in data center networks (DCNs), it is critical and challenging to rapidly recover loss without adding extra congestion. Therefore, in this paper, we propose a novel loss recovery approach fast multi-path loss recovery (FUSO) that exploits multi-path diversity in DCN for transport loss recovery. In FUSO, when a multi-path transport sender suspects loss on one sub-flow, recovery packets are immediately sent over another sub-flow that is not or less lossy and has spare congestion window slots. FUSO is fast in that it does not need to wait for timeout on the lossy sub-flow, and it is cautious in that it does not violate the congestion control algorithm. Testbed experiments and simulations show that FUSO decreases the latency-sensitive flows' 99th percentile FCT by up to similar to 82.3% in a 1-Gb/s testbed, and up to similar to 87.9% in a 10 Gb/s large-scale simulated network.
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