Data center network transmission layer stream data transmission method based on priority

Abstract

The invention discloses a data center network transmission layer stream data transmission method based on priority. The method comprises steps that S1, data flows transmitted by a data center network are classified into small data flows and large data flows; S2, the priority number pri of the small data flows is calculated; S3, weight w of the small data flows is calculated; S4, a congestion degree alpha of the present network is calculated; S5, whether the present network is in a congestion state is determined, if yes, a step S6 is actuated; if not, a step S7 is actuated; S6, results of the steps S2, S3 and S4 are substituted into a Gamma function formula to reduce the size of a data flow congestion degree window; S7, the result of the step S3 is substituted into the formula to enlarge the size of the data flow congestion degree window; and S8, the data flows are sent according to the updated window. Through the method, transmission delay of the small data flows can be not reduced on the condition that an application level is not required to prompt parameters such as the volume of the data flows, and the integral high throughput of the network can be further maintained.

Description

technical field [0001] The invention belongs to the field of computer networks, in particular to a priority-based method for transmitting data streams in the transport layer of a data center network. Background technique [0002] As information technology continues to penetrate into various fields of production and life, the need for centralized processing of large-scale data has become more and more obvious, so people can put forward the concept of data center. The so-called data center is to store and process several hosts (sometimes even millions of hosts) as a whole, and present it as a host with more powerful functions to provide services to users. The data center consists of two parts, namely, the part used for data storage and processing and the part used for data communication. The part used for data storage and processing is the host computer in the data center, while the part used for data communication is Consists of switches and routers in the data center. The ...

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Problems solved by technology

[0011] The purpose of the present invention is to improve the transport layer protocol of the data center network on the basis of the existing technical solutions, and propose a transmission that reduces the transmission delay of small data streams in the data center network and can ensure the high throughput of the network at the same time layer protocol, which solves the problem that the throughput of large data streams cannot be taken into account while reducing the transmission delay of small data streams in the prior art

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