文件名称:
Springer - Analysis of TCP Performance in Data Center Networks
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文件大小: 3mb
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上传时间: 2013-10-23
详细说明： Our objective in this manuscript, is to address TCP’s Incast problem by providing transport layer solutions that are both practical and backward compatible. We approach this goal in two steps. First, we derive an analytical model of TCP Incast. Such a model is essential to understand the reasons behind TCP’s throughput collapse. The analytical model provides a closed form equation, which can be used to compute throughput at the client for various synchronized workloads. We verify the accuracy of our model against measurements ta ken from ns-2 simulations. Next, we discuss some solutions that were designed to address TCP Incast at the transport layer. Specifically, we develop transport layer solutions that improve TCP’s performance under Incast traffic, by either proactively detecting network congestion through probabilistic retransmission or by dynamically resizing TCP’s segments in order to avoid incurring timeout penalty. We evaluate the merits of the aforementioned solutions using ns-2 simulations. Results show that each of our suggested techniques outperforms standard TCP under various experimental conditions. ...展开收缩
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