Method and system for obtaining optimal weight of network chip WRR

The invention provides a method and system for obtaining the optimal weight of a network chip WRR. The method comprises that an initial weight value of each WRR queue is obtained; the initial weight values of the WRR queues are traversed to obtain a corresponding maximal common divisor; and the optimal weight corresponding to each WRR queue is obtained according to the initial weight values of the WRR queues and the maximal common divisor. According to the invention, a minimal non-zero original weight is used to search for the maximal value corresponding to the maximal common divisor in a traversal manner, the traversal range when the maximal common divisor is searched is narrowed greatly, the efficiency of calculating the maximal common divisor of the original weight values is improved, the maximal common divisor of the original weight values of all the queues is searched in the traversal manner, the original weight values are divided by the maximal common divisor, and the optimal weights of the WRR queues are generated rapidly and accurately; and it is ensured that the scheduling proportion among the queues satisfies system expectation, fluctuation during WRR scheduling is reduced, the stability and reliability of the network chip are improved, and the working efficiency of development staff is improved.