Credit based flow control system, apparatus and method

Abstract

The invention discloses a reputation-based flow control system, device and method, the system comprises a multiport switch device. The switch device comprises a plurality of port modules, arbitrationmodules, and routing modules. The port module comprises a transmit module, a receiver module, and a flow control module; the receiver module comprises a plurality of virtual channel receiving buffer zones. The arbitration module also comprises a recording module to record arbitration failure FPL value according to the transfer request; the flow control module comprises a judge module, so that whenthe transmit module at the receiving end has data packet to be transmitted to receiver module at the transmitting end, the flow control module at the receiving end compares the remaining local reputation value and the current remaining resource with the arbitration failure FPL value received at the transmitting end and transmitted by the transmit module to judge whether to transmit flow control packet to the receiver module at the transiting end. The invention improves the efficiency of the flow control method of data communication networks and the utilization of the links in the networks andresources in the buffer zones.

Description

technical field [0001] The invention relates to the field of data communication networks, in particular to a credit-based flow control system, device and method, which are suitable for flow control of end-to-end links in high-speed data communication networks. Background technique [0002] In a switch-based interconnection network, a switch device is connected to a processing node or a switch device in a point-to-point manner to form a network link for data communication. The switch device includes a plurality of communication ports, and each communication port includes three modules of sending, receiving and flow control, and the two ends of the communication ports of the plurality of switches are respectively connected to form a network link for data communication. [0003] The sending module is used to send data packets and flow control packets. [0004] The receiving module is used to extract data packets and flow control packets from the received data flow. A typical ...

AI Technical Summary

Problems solved by technology

On the one hand, when the reputation value of the sending module is insufficient, if the other party of the communication has enough free space but fails to replenish the new reputation value in time, the sending module cannot send new data packets, resulting in waste of physical links and resulting in poor throughput of the switch. On the other hand, if the other party of the communication frequently sends reputation information, it will occupy a large number of physical channels, resulting in the inability to send normal data packets, which will also affect the performance of the switch

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