Differential stream transmission control method and device for cloud computing data center network

Abstract

The invention relates to a differential stream transmission control method and device for a cloud computing data center network, belonging to the field of cloud computing. Including the following steps: 1) the switch uses the explicit congestion notification ECN mechanism to mark the data packets exceeding the set threshold queue length; 2) the sender server counts the proportion of marked ACK confirmation data packets, updates the parameter α, and judges whether congestion occurs, wherein The parameter α represents the perception of the degree of network congestion; 2.1) When the network is not congested, the TCP flow does not adjust the congestion window; 2.2) The sender server performs flow classification judgment, establishes a flow classification database, and records and updates the parameter β at the same time, where the parameter β represents the multiplexing degree of the large flow to the receiving end link; 3) The sending end server implements different congestion avoidance strategies for TCP flows with different transmission requirements distinguished by the flow classification decision mechanism. The advantages of the present invention are: 1. It can effectively avoid TCP Incast congestion; 2. It can reduce the time for small flows to complete transmission; 3. It can ensure the fast and fair convergence of congestion control.

Description

technical field [0001] The invention belongs to the field of cloud computing, and relates to a differential stream transmission control method and device for a cloud computing data center network. Background technique [0002] Cloud computing realizes the statistical multiplexing of resources in a virtualized way, and cloud users can access computing, network, storage, software and other resources in configurable resource pools on demand anytime and anywhere through the network. A data center (DataCenter) is mainly composed of a large number of servers, storage devices, network devices (switches, routers and cables), as well as power distribution systems and cooling systems. The data center network (DCN) as a communication infrastructure is a network that interconnects large-scale servers in the data center to realize large-scale distributed computing, and is used for the transmission and exchange of large amounts of data between servers in the data center. The current data...

AI Technical Summary

Problems solved by technology

[0011] In view of this, the purpose of the present invention is to solve the problems of high cost, difficult implementation and difficulty in meeting the transmission requirements of mixed data streams in the existing data center network congestion control mechanism, and proposes to design a transmission control method and device for differential streams, with Meet the transmission requirements of data center network mixed traffic types and typical many-to-one communication mode applications

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