Method, apparatus, and system for virtual cluster integration

A method for calculating CPU voltage energy consumption of a physical machine, comprising:

• calculating a CPU utilization ratio of the physical machine;
• multiplying the CPU utilization ratio of the physical machine by a maximum value of a dominant frequency of the physical machine to obtain a minimum CPU dominant frequency of the physical machine;
• and
• according to the minimum CPU dominant frequency, obtaining a voltage value associated with the minimum CPU dominant frequency from a mapping relationship between a CPU dominant frequency and a voltage, wherein the CPU dominant frequency and the voltage are of the physical machine.

A virtual cluster integration apparatus, comprising:

• a module for determining the minimum number of physical machines, configured to perform a calculation through a search algorithm to obtain the minimum number m of physical machines which are capable of accommodating N virtual machines, and obtain G virtual integration solutions for hosting the N virtual machines on the minimum number m of physical machines, wherein m is a positive integer less than or equal to M, and G is an integer greater than or equal to 1;
• a CPU energy consumption calculating module, configured to calculate CPU voltage consumption of each virtual integration solution:
• calculate a CPU utilization ratio of a jth physical machine Pij of an ith virtual integration solution;
• multiply the CPU utilization ratio by a maximum value of a dominant frequency of the physical machine Pij to obtain a minimum CPU dominant frequency required by the physical machine Pij hosting a virtual machine;
• according to the minimum CPU dominant frequency of the physical machine Pij, obtain a voltage value associated with the minimum CPU dominant frequency from a mapping relationship between a CPU dominant frequency and a voltage, wherein the CPU dominant frequency and the voltage are of a physical machine;
• and add up voltage values of m physical machines in the ith virtual integration solution to obtain CPU voltage consumption of the ith virtual integration solution, wherein i is a positive integer less than or equal to G, and j is a positive integer less than or equal to m;
• and
• a migration policy formulating module, configured to determine a first virtual integration solution according to a minimum value which is of CPU voltage consumption and is calculated and obtained in the G virtual integration solutions;
• and if there is one first virtual integration solution, determine a virtual integration migration policy according to the first virtual integration solution.