Abstract:

Based on the system feature of softswitch based heterogeneous clustered media server, this paper proposed a limited resource vector load balancing algorithm and also provided its software implementation method. Harmonious usage of system resources was considered and violent shaking of the system performance was avoided in the algorithm. A lot of simulations on the Petri net model of balance system had been conducted and the algorithm had been compared with some traditional algorithms on system throughput, request response time and performance stability. Results of simulation experiments show that the algorithm has higher performance. The implementation method of the algorithm is also useful for other heterogeneous clustered systems.

Key words: load balancing algorithm, heterogeneous cluster, media server, softswitch, stochastic Petri net