Long-distance RDMA rate adjustment method based on switch drive

Abstract

The invention relates to the field of data transmission, and particularly discloses a long-distance RDMA (Remote Direct Memory Access) rate adjustment method based on a switch driver, which is used for adjusting the rate of conventional flow through an RTT (Room-to-Time Transfer)-level end-to-end control loop. Wherein the RTT-level end-to-end control loop comprises a sender and a receiver for data transmission, and the sender carries an extended I NT header at each data packet header; processing burst traffic and cross-domain long RTT traffic in the same data center through a sub-RTT level switch control loop; wherein the sub-RTT level switch control loop is cooperatively executed by a sender and a switch in the same data center. The two control loops work cooperatively to effectively distribute and adjust the sending rate of the flow, thereby adapting to complex flow requirements in different network environments.

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