Flow control optimization method based on POTN

Abstract

The invention discloses a flow control optimization method based on POTN. The method comprises the steps that a CCU application layer periodically sends a polling frame to each single disc, acquires in-place physical port information, and adds the physical port into or removes the physical port out of a flow control queue according to the in-place physical port information, to update the flow control queue in real time; and the CCU application layer sends data packets to every port in the flow control queue in a polling manner, and thus controls the flow of each port, wherein the packet sending time of each port and the maximal threshold of the total length of the data packets sent within the packet sending time are preset according to the packet sending rate of each port. According to the method, by dynamically maintaining the flow control queue, all ports in the flow control queue are actual in-place ports is ensured, unused ports on the device is prevented from adding into the flow control queue, the number of ports needing to be polled in the flow control queue is decreased, and thus the CPU occupancy rate of the flow control thread is significantly reduced.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a POTN-based flow control optimization method. Background technique [0002] In POTN equipment, due to the limitation of the bandwidth of a single disk, the data transmission rate of MCC (channel controller) and SCC (serial communication controller) channels cannot exceed a certain limit, so it is developed on the protocol stack of the main control disk of POTN equipment The flow control function is provided to control the data sending rate according to the bandwidth of a single disk. [0003] At present, flow control is implemented by adding each etsppp port to a flow control queue (abbreviated as flow control queue), and performing regular polling on each etsppp port in the flow control queue in each unit time. Since the packet sending rate of each etsppp port that needs to be controlled by flow control is at the level of 10 milliseconds (as shown in Table 1), the polling freq...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that when the number of etsppp ports of POTN equipment is large, the CPU usage rate of the flow control thread of the existing flow control scheme is too high

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