Improving the Incast Performance of Datacenter TCP by Using Rate-Based Congestion Control

Jingyuan WANG
Yunjing JIANG
Chao LI
Yuanxin OUYANG

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E97-A    No.7    pp.1654-1658
Publication Date: 2014/07/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E97.A.1654
Type of Manuscript: LETTER
Category: Communications Environment and Ethics
datacenter,  rate-based,  TCP congestion control,  

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We analyze the defects of window-based TCP algorithm in datacenter networks and propose Rate-based Datacenter TCP (RDT) algorithm in this paper. The RDT algorithm combines rate-based congestion control technology with ECN (Explicit Congestion Notification) mechanism of DCTCP. The experiments in NS2 show that RDT has a potential to completely avoid TCP incast collapse in datacenters and inherit the low latency advantages of DCTCP.