Method and apparatus for controlling central processing unit in a group of central processing units by acquiring power consumption factors for each central processing unit and comparing a mean of power consumption factors with a threshold

A method for controlling a central processing unit (CPU), comprising:

• acquiring a usage rate and an operating frequency of one CPU of operating CPUs, wherein the number of the operating CPUs is M, M is a positive integer greater than or equal to one, and the number of CPUs in a non-operating state is greater than or equal to one;
• determining whether the operating frequency of the one CPU is greater than a core on-line frequency;
• multiplying the usage rate of the one CPU by a first weight to obtain a CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is greater than the core on-line frequency;
• multiplying the usage rate of the one CPU by a second weight to obtain the CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is smaller than or equal to the core on-line frequency, wherein the first weight and the second weight are not equal and are both positive integers greater than or equal to one;
• executing the foregoing steps for M operating CPUs, and repeating N times, wherein N is a positive integer greater than or equal to one;
• acquiring M×N CPU power consumption sensitive factors after the foregoing steps are executed N times;
• acquiring a mean of the M×N CPU power consumption sensitive factors;
• and
• turning on at least one CPU in the non-operating state when the mean is greater than a CPU turn-on power consumption sensitive factor threshold.

A terminal, comprising a processor, wherein the processor is programmed to:

• acquire a usage rate and an operating frequency of one central processing unit (CPU) of operating CPUs, wherein the number of the operating CPUs is M, and wherein M is a positive integer greater than or equal to two;
• determine whether the operating frequency of the one CPU is smaller than a core off-line frequency;
• multiply the usage rate of the one CPU by a first weight to obtain a CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is smaller than the core off-line frequency;
• multiply the usage rate of the one CPU by a second weight to obtain a CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is greater than or equal to the core off-line frequency, wherein the first weight and the second weight are not equal and are both positive integers greater than or equal to one;
• execute the foregoing steps N times for each of M operating CPUs, wherein N is a positive integer greater than or equal to one;
• acquire M×N CPU power consumption sensitive factors after the foregoing steps are executed N times;
• acquire a mean of the M×N CPU power consumption sensitive factors;
• and
• turn off at least one operating CPU when the mean is smaller than a CPU turn-off power consumption sensitive factor threshold.

A terminal, comprising a processor, wherein the processor is programmed to:

• acquire a usage rate and an operating frequency of one central processing unit (CPU) of a plurality of operating CPUs, wherein the number of the operating CPUs is M, wherein M is a positive integer greater than or equal to one, and the number of CPUs in a non-operating state is greater than or equal to one;
• determine whether the operating frequency of the one CPU is greater than a core on-line frequency;
• multiply the usage rate of the one CPU by a first weight to obtain a CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is greater than the core on-line frequency;
• multiply the usage rate of the one CPU by a second weight to obtain a CPU power consumption sensitive factor corresponding to the one CPU when the operating frequency of the one CPU is smaller than or equal to the core on-line frequency, wherein the first weight and the second weight are not equal and are both positive integers greater than or equal to one;
• execute the foregoing steps for M operating CPUs, and repeat N times, wherein N is a positive integer greater than or equal to one;
• acquire M×N CPU power consumption sensitive factors after the foregoing steps are executed N times;
• acquire a mean of the M×N CPU power consumption sensitive factors;
• and
• turn on at least one CPU in a non-operating state when the mean is greater than a CPU turn-on power consumption sensitive factor threshold.