Receiver-driven fair congestion control for TCP outcast in data center networks

Receiver-driven fair congestion control for TCP outcast in data center networks
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针对数据中心网络中 TCP 弃用的接收器驱动的公平拥塞控制

DOI:
10.1016/j.jnca.2019.01.024
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发表时间:
2019-04
影响因子:
8.7
通讯作者:
Wang Jianxin
Wang Jianxin
中科院分区:
计算机科学2区
文献类型:
--
作者:
Huang Jiawei;Li Shuping;Han Rui;Wang Jianxin

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在具有多根树形拓扑的商品数据中心网络中,近距离的 TCP 流很容易被远处的 TCP 流抑制,导致尾流完成时间较长。然而现有的解决方案主要是基于窗口的,无法控制微突发拥塞,导致性能下降。在本文中,我们通过经验揭示了控制高并发流的微突发可以有效缓解严重拥塞下的 TCP 弃用问题。我们通过协调多对一流传输提出了接收器驱动的拥塞控制OFTCP。具体来说,OFTCP以小时间粒度随机推迟ACK传输以减轻聚合微突发,并基于往返时间协同调整每个流的广告窗口以提供公平传输。我们使用 Mininet 测试台和 NS2 模拟在实际数据中心工作负载下评估 OFTCP 的性能。实验结果表明,与最先进的数据中心废弃解决方案相比,OFTCP 实现了吞吐量公平性,并将尾流完成时间减少了高达 53%。
In the commodity data center networks with multi-rooted tree topologies, the close TCP flows are easily suppressed by the far ones, resulting in large tail flow completion time. The existing solutions, however, are mainly window-based and unable to control the micro-burst congestion, leading to performance degradation. In this paper, we reveal empirically that controlling the micro-burst of highly concurrent flows effectively alleviates this TCP outcast problem under severe congestion. We propose the receiver-driven congestion control OFTCP by coordinating the many-to-one flow transmission. Specifically, OFTCP randomly defers ACK transmissions in a small time granularity to mitigate the aggregate micro-burst and cooperatively adjusts the advertisement windows of each flow based on round trip time to provide fair transmission. We evaluate the performance of OFTCP with Mininet testbed and NS2 simulation under realistic datacenter workloads. Experiment results show that OFTCP achieves throughput fairness and reduces the tail flow completion time by up to 53% compared with state-of-the-art datacenter outcast solutions.
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