Nec Corporation

Ryosuke Ohara

Naoya Yoshikawa

Tomohito Iguchi

There is provided a resource optimization method enabling a stable live migration. An amount of generated traffic that is anticipated to be generated is estimated based on the number of subscribers to be processed by a SIP server on a virtual machine (step S). Since it is not necessary to perform a live migration of the virtual machine when the estimated amount of generated traffic is less than or equal to an optimum value predetermined as throughput of physical hardware on which the virtual machine operates ('Yes' in step S), monitoring of the number of number of subscribers is continued by returning to step S. Meanwhile, when the estimated amount of generated traffic exceeds the optimum value ('No' in step S), an optimum physical hardware which has a margin for processing the amount of generated traffic is selected, and the virtual machine live-migrates to the selected physical hardware (step S).

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Tokyo, Japan

Ryosuke Ohara