VIRTUAL MACHINE SYSTEM

• US 20100023940A1
• Filed: 06/26/2009
• Published: 01/28/2010
• Est. Priority Date: 07/28/2008
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: NISHIGUCHI, Naoki, YASAKI, Masatomo, IWAMATSU, Noboru
• Granted Patent: US 8,397,232 B2
• Time in Patent Office: Days
• US Class Current: 718/1
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 2209/504 Resource capping
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455
• CPC Class Codes: G06F 9/5094 where the allocation takes into account power or heat criteria power management in computers in general G06F1/3203; thermal management in computers in general G06F1/206
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A virtual machine system includes a virtual battery manager, a discharge calculator, and a discharger. The virtual battery manager manages a virtual battery for running a virtual machine. The virtual battery holds electric energy used by the virtual machine. The virtual battery is capable of discharging and being charged. The discharge calculator calculates a discharged amount of the virtual battery by calculating energy consumption of the virtual machine with reference to a consumption policy and a consumption allocation table when a resource quota for the virtual machine satisfies a predefined condition for discharging. The consumption policy defines a maximum amount of total energy consumption of the plurality of virtual machines. The consumption allocation table contains an allocated ratio of energy consumption for each of the plurality of virtual machines. The discharger decreases a battery level of the virtual battery.

Claims

1. A virtual machine system for running a plurality of virtual machines on a physical machine, said virtual machine system comprising:

a virtual battery manager for managing a virtual battery for running a virtual machine, said virtual battery holding electric energy used by the virtual machine, said virtual battery being capable of discharging and being charged;

a schedule manager for allocating a resource of the physical machine to the virtual machine;

a resource quota manager for managing a resource quota for each of the plurality of virtual machines in accordance with status data acquired from the schedule manager, said status data indicating an allocated status of the resource on each of the plurality of virtual machines;

a discharge calculator for calculating a discharged amount of the virtual battery by calculating energy consumption of the virtual machine with reference to a consumption policy and a consumption allocation table when the resource quota for the virtual machine satisfies a predefined condition for discharging, said consumption policy defining a maximum amount of total energy consumption of the plurality of virtual machines, said consumption allocation table containing an allocated ratio of energy consumption for each of the plurality of virtual machines; and

a discharger for decreasing a battery level of the virtual battery.

2. The virtual machine system of claim 1, further comprising:

a consumption policy setter for setting the consumption policy.

3. The virtual machine system of claim 2, further comprising:

a charge calculator for calculating a charged amount of the virtual battery with reference to a charge policy and a charge allocation table when the resource quota for the virtual machine satisfies a predefined condition for charging, said charge policy defining a maximum amount of total charged energy for the virtual batteries of the plurality of virtual machines, said charge allocation table containing an allocated ratio of charged energy for each of the plurality of virtual machines; and

a charger for increasing the battery level of the virtual battery.

4. The virtual machine system of claim 3, further comprising:

a charge policy setter for setting the charge policy.

5. The virtual machine system of claim 4, wherein

said consumption policy or said charge policy is set in accordance with maximum energy consumption of the physical machine measured during a predefined time period.

6. The virtual machine system of claim 4, wherein

said consumption policy or said charge policy is defined as a list of maximum energy consumption data of the physical machine measured during a predefined time period.

7. The virtual machine system of claim 1, wherein

said schedule manager allocates the resource to the virtual machine in accordance with the battery level of the virtual battery.

8. The virtual machine system of claim 1, further comprising:

a resource utilization monitor for monitoring resource utilization of the physical machine,

wherein

said discharge calculator adjusts, in accordance with the resource utilization of the physical machine, a threshold value included in the predefined condition for discharging.

9. The virtual machine system of claim 1, wherein

said predefined condition for discharging is that a total amount of time over which the resource is allocated during a predefined time period is greater than or equals to a predefined threshold value.

10. The virtual machine system of claim 9, wherein

the predefined threshold value in the predefined condition for discharging is defined in accordance with maximum energy consumption of the physical machine.

11. The virtual machine system of claim 9, wherein

the predefined threshold value in the predefined condition for discharging is defined for each time or each time period.

12. The virtual machine system of claim 9, wherein

the predefined threshold value in the predefined condition for discharging is defined in accordance with a total number of virtual machines running on the physical machine.

13. The virtual machine system of claim 9, wherein

the predefined threshold value in the predefined condition for discharging is defined in accordance with a priority assigned to each of the plurality of virtual machines.

14. The virtual machine system of claim 9, wherein

the predefined threshold value in the predefined condition for discharging is defined in accordance with electric energy assigned to the physical machine.

15. The virtual machine system of claim 3, wherein

said predefined condition for charging is that a total amount of time over which the resource is allocated during a predefined time period is less than or equals to a predefined threshold value.

16. The virtual machine system of claim 3, wherein

said predefined condition for charging is that a total amount of time elapsed after the virtual machine stopped is greater than or equals to a predefined threshold value.

17. The virtual machine system of claim 1, wherein

the plurality of virtual machines running on the physical machine share the virtual battery.

18. The virtual machine system of claim 1, wherein

said virtual machine system is communicably connected with a consumption policy setter for setting the consumption policy over a communication network.

19. The virtual machine system of claim 3, wherein

said virtual machine system is communicably connected with a charge policy setter for setting the charge policy over a communication network.

20. A computer-readable medium encoded with computer-executable instructions enabling a computer to execute functions of a virtual machine system for running a plurality of virtual machines on a physical machine, said virtual machine system including:

a virtual battery manager for managing a virtual battery for running a virtual machine, said virtual battery holding electric energy used by the virtual machine, said virtual battery being capable of discharging and being charged,

a schedule manager for allocating a resource of the physical machine to the virtual machine,

a resource quota manager for managing a resource quota for each of the plurality of virtual machines in accordance with status data acquired from the schedule manager, said status data indicating an allocated status of the resource on each of the plurality of virtual machines,

a discharge calculator for calculating a discharged amount of the virtual battery by calculating energy consumption of the virtual machine with reference to a consumption policy and a consumption allocation table when the resource quota for the virtual machine satisfies a predefined condition for discharging, said consumption policy defining a maximum amount of total energy consumption of the plurality of virtual machines, said consumption allocation table containing an allocated ratio of energy consumption for each of the plurality of virtual machines, and

a discharger for decreasing a battery level of the virtual battery.