Research on Load Balancing Algorithm Based on the Unused Rate of the CPU and Memory

For the least connections algorithm currently used cannot solve the problem of inaccurately reflecting the load capacity of servers caused by the situation that the difference of resources consumed by different requests is very big, this paper designs a new algorithm named UCM algorithm. It means use the unused rate of the CPU and Memory as the actor to calculate the weight of the server, and introduces a new parameter named load redundant parameter to judge the ability to deal with new requests. By simulation, it simulates a circumstance that many requests are sent synchronously. The least-connections algorithm and UCM algorithm are used in the system. The result indicates that using the UCM algorithm has a shorter response time, and it means saving the time that the system deals with the service requests.