An Initial Performance Evaluation of Rapid PHY Selection (RPS) for Energy Efficient Ethernet
An Initial Performance Evaluation of Rapid PHY Selection (RPS) for Energy Efficient Ethernet
复制标题
节能以太网快速 PHY 选择 (RPS) 的初始性能评估
DOI：
10.1109/lcn.2007.96
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Kenneth J. Christensen
中科院分区：
文献类型：
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作者：
F. Blanquicet;Kenneth J. Christensen
IEEE 802.3节能以太网(EEE)研究小组正在考虑将快速物理层选择(RP)作为一种快速切换以太网链路数据速率的机制，以使链路数据速率与链路利用率相匹配。切换数据速率时，RPS会导致链路暂时中断。这种中断可能会由于上游交换机中的缓冲区溢出而导致丢包。我们使用暂停流控制来模拟RPS，并通过实验研究了RPS对TCP和UDP文件传输的可能影响。我们发现，如果在文件服务器中启用暂停流量控制，RPS对性能的影响很小或没有明显影响，但对TCP吞吐量有一些微妙的影响。
The IEEE 802.3 energy efficient Ethernet (EEE) study group is considering rapid PHY Selection (RPS) as a mechanism to quickly switch the data rate of an Ethernet link to match link data rate with link utilization. When switching the data rate, RPS causes a momentary disruption of the link. This disruption may cause packet loss due to buffer overflow in upstream switches. We emulate RPS using PAUSE flow control and experimentally study the possible effects of RPS on TCP and UDP file transfer. We show that RPS has little or no perceivable effect on performance, but has some subtle effects on TCP throughput if PAUSE flow control is enabled in the file server.