TCP Incast问题的定量分析

The quantitative analysis of the problem of TCP Incast

TCP Incast问题是影响现代数据中心性能的典型问题。正确理解TCP Incast问题的解决方案,对提高数据中心的业务能力具有重要意义。通过数学模型,定量分析了数据块大小、并发数量及TCP最小重传超时(RTOmin)等因素对TCP Incast问题的影响,构建并验证了一个预测小数据块Incast问题发生的数学模型。

TCP Incast is the typical problem that influences the capability of the modem data center. Comprehending the method of resolving TCP Incast is very important for improving business ability of the data center. Through mathematical models, this paper quantitatively analyzes the factors, such as data block size, the number of concurrent senders and TCP minimum retransmission time out（ RTO_min ）, which impact on TCP Incast, and also sets up a mathematical model for predicting the onset of incast leaded by small data blocks.