Capacity determination method and device based on cluster architecture

The invention discloses a capacity determination method and device based on a cluster architecture. The method comprises the following steps: determining an utilization rate upper limit parameter of aCPU of eachcomputer forming a target cluster architecture; determining a use upper limit value of the CPU of the target cluster architecture at least through the CPU use upper limit parameter according to the cluster type of the target cluster architecture; determining a CPU prediction value of the target cluster architecture in the next period according to the CPU average usage rate of the target cluster architecture in the current period and the load increase prediction coefficient of the target cluster architecture in the next period; and determining whether the current capacity of the target cluster architecture meets the capacity requirement of the next period or not at least according to the CPU use upper limit value and the CPU prediction value. According to the method, whether thecapacity of the cluster a