Virtual computer system, virtual computer control method and accumulation circuit

摘要

The present invention relates to a virtual machine system that includes a plurality of processors and executes a plurality of virtual machines in parallel with use of the plurality of processors. An aim thereof is to suppress power consumption without sacrificing the performance of the virtual machine system. When there are at least two processors that do not have any virtual machines allocated thereto, one of the at least two processors is supplied with power so as to be placed in a standby state, and a remaining one or more of the at least two processors are not supplied with power.

主权项

1. A virtual machine system including a plurality of processors and for causing a plurality of virtual machines to operate, each processor being placed in any of: a first state in which the processor operates with a power supply; a second state in which the processor operates with a power supply lower than in the first state; and a third state in which the processor is not in operation without any power supply, the virtual machine system comprising:
an allocation unit configured to allocate each virtual machine to any processor that is supplied with power; and a power supply unit configured to, when the allocation unit allocates a virtual machine to a processor that does not have any virtual machine allocated thereto and is in the second state and at least two processors are in the third state, supply power to the processor allocated to the virtual machine so as to cause the processor to be placed in the first state and supply power to at least one and less than all of the processors in the third state so as to cause the at least one and less than all of the processors to be placed in the second state, and maintain a remaining one or more of the processors in the third state, wherein the plurality of processors includes type 1 processors and type 2 processors having a lower processing capability and a lower power consumption than the type 1 processors, and for each virtual machine allocated to either type of processors between the type 1 processors and the type 2 processors, when processing of the virtual machine satisfies a predetermined condition, the allocation unit reallocates the virtual machine satisfying the predetermined condition to one of the other type of processors.