Task transmission congestion control method in DCN (Data Center Network)
A congestion control and task technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as difficulties in implementation and deployment, and unclear division of coflow, so as to reduce average completion time, improve overall performance, and speed up sending speed effect
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[0045] see figure 1 , figure 1 It is a flowchart of the present invention: a method for transmission control based on multi-level congestion feedback in DCN, the process is as follows:
[0046]The sender sets the size of the initial sending window cwnd to 2, the switch sets the queue length threshold to 65, sets the congestion flag (CE bit) to 0, and sets the small task data volume threshold to task min Set to 100KB, the large task data volume threshold task max set to 1MB;
[0047] When the switch monitors that the current queue length exceeds the threshold, it immediately sets the congestion flag of the data packet currently entering the queue to 1. When the data packet with the congestion flag set to 1 arrives at the receiver, the receiver sends the ACK packet corresponding to the data packet to 1. The congestion flag bit is 1, and the ACK packet is sent to the sender.
[0048] After receiving all ACK packets in the current sending window, the sender calculates the cong...
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