An Improved Dynamic Alarm Load Balancing Algorithm
Wenwei Li · Journal of Chinese Computer Systems · 2013
Load balancing,by forwarding a large number of concurrent access requests to multiple servers for separate process,improves the overall throughput of the w eb cluster.There are follow ing questions in existing load balancing algorithms,such as the referenced load factor is too small,the load calculation is complex,the load oscillation is serious.An improved dynamic alarm load balancing algorithm,w hich is presented in this paper,determine the forw arding target according to the type of request,the server nodes' ability and real-time load value.By monitoring the nodes' real-time load,together w ith period load feedback and dynamic-alarm,the real-time and effectiveness of the load information is ensured,and the load calculation is reduced;by using the RED method to correct the load state,to avoid the uneven load distribution resulting from unreasonable load state determination,the load oscillation is reduced than before.The simulation result show s that the improved algorithm enhances the throughput of the w eb cluster system,and improves the load balancing degree significantly.