VIRTUAL MACHINE MOVEMENT TARGET SELECTING METHOD CAPABLE OF SELECTING A TARGET PHYSICAL MACHINE FOR MOVING A VIRTUAL MACHINE AMONG A PLURALITY OF PHYSICAL MACHINES

摘要

PURPOSE: A virtual machine movement target selecting method is provided to consider load balancing and space balancing among a plurality of physical machines when a virtual machine is moved among the physical machines, thereby selecting the physical machines capable of maximizing performance of the whole system.;CONSTITUTION: One or more physical machines including resources necessary for generation of a virtual machine are selected as a first candidate group among a plurality of physical machines(S101~S104). The physical machines which are smaller than a first threshold value are selected as a second candidate group among the physical machines included in the first candidate group(S105,S106). The target physical machine is selected based on a resource availability ratio of the physical machines included in the second candidate group(S108).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) End; (S101) Selecting a first candidate group having the enough residual capacity of CPU required for generating a virtual machine among multiple physical machines; (S102) Removing one of the physical machines which has enough residual capacity of memory required for generating the virtual machine; (S103) Removing one of the physical machines which has enough residual storage capacity required for generating the virtual machine; (S104) Removing one of the physical machines which has enough residual capacity of input and output resources required for generating the virtual machine; (S105) First candidate group ∈ (physical machines of which a mean number of standby processors for a unit hour is smaller than a first threshold value); (S106) Selecting the physical machines, of which a mean number of the standby processors for a unit hour is smaller than the first threshold value, as a second candidate group; (S107) Selecting the physical machines which has the minimum mean number of the standby processors for the unit hour as the second candidate group; (S108) Selecting a target physical machine based on a resource availability ratio of the physical machines in the second candidate group