An Arbitration Method on SCI/RT Arbitration Transmission
Zheng Li · Acta Armamentarii · 2010
The scalable coherent interface for real time(SCI/RT) TRAIN protocol is analyzed. The results show the ringlet capacity is wasted with heavy ringlet throughput, and in case of the heavy ringlet load, the priority inversion is appeared. When the ringlet has hotspot nodes, the state of capacity wasted is greatly dependent on the position of blocked node. A new method based on broadcasting status of input queue is proposed. By reducing the rate of ticket rejecting, the new method transfers packages more effectively than the standard one. The SCI/RT ringlet with 6 nodes is simulated by the OPNETTM software. The results show that the new method gets more throughput and lower transferring delay than the standard one, and it reduces the priority inversion problem.