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.