Service quality guarantee method in low-energy cluster environment

The invention discloses a service quality guarantee method in a low-energy cluster environment. The method comprises the following steps: (1) load connection requirements of a user are received by a cluster system, loads are connected to each cluster joints; (2) a load connection number predicted value V of a system in the moment of t+T is predicted according to an actual value of a sum of load connection numbers in the current moment t and the previous moment T; (3) the number of cluster joints N in a working state of the system in the moment of t+T is calculated according to the predicted value V; (4) whether N is larger than A or not is judged, if N is larger than A, N-A cluster joints in dormant state are awakened, and step (6) is processed, and if N is smaller than A, step (5) is processed; (5) whether A is equal to N is judged, if A is equal to N, the step (6) is processed, and if A is not equal to N, energy saving scheduling is conducted, and the step (6) is executed; (6) scheduling of the cluster join