Patent ID: 9632810
Date: 2017-04-25
CPC Classifications: G06F,H04L

Claim:
1. A computer program product for managing virtual machines that execute on physical servers in a server cloud, wherein said computer program product comprises a computer readable storage medium having program code embodied therewith, wherein said computer readable storage medium is not a transitory signal per se, and wherein said program code is readable and executable by a processor to perform a method comprising: establishing a first maximum network bandwidth percentage for a first physical server in the server cloud, wherein the first maximum network bandwidth percentage is a percentage of a total network bandwidth capability designed for the first physical server, wherein a response time for operational requests to one or more virtual machines on the first physical server changes beyond a predefined differential in response to the first maximum network bandwidth percentage being reached, and wherein the predefined differential is a rate of change in response delay times for the first physical server compared with changes in network bandwidth capacity percentages for the first physical server; determining that the predefined differential has been exceeded; determining, by a network interface card (NIC) controller device on the first physical server, that the first maximum network bandwidth percentage for the first physical server is exceeded; in response to the NIC controller device on the first physical server determining that the first maximum network bandwidth percentage for the first physical server is exceeded and that the predefined differential has been exceeded, moving, by a cloud service hypervisor device, one or more virtual machines on the first physical server to a second physical server in the server cloud; wherein the first physical server supports a first set of virtual machines and a second set of virtual machines and prioritizes the first set of virtual machines over the second set of virtual machines; moving, by the server cloud hypervisor device, the virtual machines from the second set of virtual machines to the second physical server until a network bandwidth percentage for the first physical server drops below the first maximum network bandwidth percentage, wherein virtual machines from the first set of virtual machines remain on the first physical server; predicting future demands on the first physical server, being higher than a demand on the second physical server, based on a quantity of virtual machines in the first set of virtual machines; and configuring, by the cloud service hypervisor device, multiple physical servers that match network bandwidth, throughput, power usage, and hardware components of the first physical server, wherein the multiple physical servers are configured to support future virtual machines that meet the future demands on the first physical server, and wherein each of the multiple physical servers mirrors a configuration of the first physical server.