Physical host load detecting method based on CPU (Central Processing Unit) heartbeat amplitude

The invention relates to a physical host load detecting method based on CPU (Central Processing Unit) heartbeat amplitude. The method comprises the following steps: setting accordant monitoring parameters for all physical hosts, and setting activation judging moments of all physical hosts; and all physical hosts receiving detection beginning instructions, judging activation, reading CPU usage amount history record sheets (H), and calculating estimated load values (MH) and actual load values (MR), wherein when MR is larger than MH, the physical hosts are in an overload state, and otherwise, the physical hosts are in a normal state. The method can quickly and accurately detect the load state of the physical hosts, and then reduces main energy consumption indexes of the physical hosts and enhances performances of the physical hosts, and finally reduces operation, maintenance and management costs of the whole system.