Method and apparatus for managing power in virtualization system using different operating systems

An apparatus for power management in a virtualization system using different operating systems, the apparatus comprising:

• real processors configured to perform tasks;
• virtual processors mapped with the real processors and configured to execute operating systems or applications;
• and
• a controller configured to monitor usage states of the real processors and the virtual processors, on a virtualization layer, determine workload of a virtual processor, determine a utilization level of a real processor for supporting the determined workload, reconfigure the mapping between the real processors and virtual processors according to the utilization level of the real processors, determine errors of a weighting algorithm and a simple proportional integral differential (PID) algorithm, identify whether a selected algorithm is present, and select, when a selected algorithm is not present, another algorithm producing a smaller error.

A method for power management on a virtualization layer in a virtualization system using different operating systems, the method comprising:

• monitoring usage states of one or more virtual processors mapped with real processors, the virtual processors executing operating systems or applications;
• determining errors of a weighting algorithm and a simple proportional integral differential (PID) algorithm;
• identifying whether a selected algorithm is present;
• selecting, when the selected algorithm is not present, another algorithm producing a smaller error;
• determining workload of the one or more virtual processors based on the selected algorithm;
• identifying an operation state of hardware equipment based on the workload of the one or more virtual processors;
• and
• changing, when the hardware equipment is concurrently used by multiple virtual processors, the operation state of the hardware equipment based on usage state of the hardware equipment.

An apparatus for power management in a virtualization system using different operating systems, the apparatus comprising:

• one or more virtual processors mapped with real processor configured to perform tasks, the virtual processors configured to execute operating systems or applications;
• a hardware equipment configured to perform an operation indicated by a command from a virtual processor;
• and
• a controller configured to:
• monitor usage states of the virtual processors, on a virtualization layer;
• determine errors of a weighting algorithm and a simple proportional integral differential (PID) algorithm;
• identify whether a selected algorithm is present;
• select, when the selected algorithm is not present, another algorithm producing a smaller error;
• determine workload of the one or more virtual processors based on the selected algorithm;
• Identify an operation state of the hardware equipment based on the workload of the one or more virtual processors;
• and
• change, when the hardware equipment is concurrently used by multiple virtual processors, the operation state of the hardware equipment based on usage state of the hardware equipment.