Method for dispatching central processing unit of hotspot domain virtual machine and virtual machine system

A virtual machine (VM) system comprising a hotspot domain VM, a common domain VM and a VM Monitor (VMM) and a non-transitory computer-readable medium comprising instructions, which, when executed by a computer, cause the computer to perform the following steps of:

• binding a different physical CPU to each virtual CPU (vCPU) of a plurality of vCPUs of a hotspot domain VM;
• determining a comprehensive utilization rate of the vCPUs of the hotspot domain VM according to counted use information of the vCPUs of the hotspot domain VM, and determining to add or reduce at least one online vCPU for the hotspot domain VM according to the comprehensive utilization rate of the vCPUs and a maximum number of the vCPUs assigned to the hotspot domain VM;
• wherein the use information of the vCPUs comprises a utilization rate of the vCPUs of the hotspot domain VM and a use time occupancy rate of the vCPUs of the hotspot domain VM;
• adjusting the vCPUs of a common domain VM in the running queue of a physical CPU bound to an online vCPU after the online vCPU is added, so that the online vCPU can be dispatched on the physical CPU while the vCPUs of the common domain VM cannot be dispatched on the physical CPU;
• and
• adjusting the vCPU of the hotspot domain VM in the running queue of a physical CPU bound to an offline vCPU after the online vCPU is reduced, so that vCPUs of the common domain VM can be dispatched on the physical CPU,
• wherein the hotspot domain virtual machine (VM) is a VM that is depended on by the common domain VM,
• wherein the determining a comprehensive utilization rate of the vCPUs comprises:
• determining the use time occupancy rate of the vCPUs of the hotspot domain VM according to a sum of operation time and a sum of wait time of all the vCPUs of the hotspot domain VM;
• determining the utilization rate of the vCPUs of the hotspot domain VM according to a sum of non-idle time of all the vCPUs inside the hotspot domain VM and a sum of operation time of all the online vCPUs of the hotspot domain VM;
• and
• determining the comprehensive utilization rate of the vCPUs of the hotspot domain VM according to the use time occupancy rate of the vCPUs of the hotspot domain VM and the utilization rate of the vCPUs of the hotspot domain VM.

A physical device comprising physical CPUs, a hotspot domain virtual machine (VM), a common domain VM, and a VM Monitor (VMM), wherein:

• the VMM is configured to bind a different physical CPU of the physical CPUs to each virtual CPU (vCPU) of a plurality of vCPUs of the hotspot domain VM;
• the hotspot domain VM is configured to determine a comprehensive utilization rate of the vCPUs of the hotspot domain VM according to counted use information of the vCPUs of the hotspot domain VM, and determine that at least one online vCPU is to be added or to be reduced for the hotspot domain VM according to the comprehensive utilization rate of the vCPUs and a maximum number of the vCPUs assigned to the hotspot domain VM, wherein the use information of the vCPUs comprises a utilization rate of the vCPUs of the hotspot domain VM and a use time occupancy rate of the vCPUs of the hotspot domain VM;
• the VMM is further configured to adjust the vCPUs of the common domain VM in the running queue of a physical CPU bound to an online vCPU after the online vCPU is added, so that the online vCPU can be dispatched on the physical CPU while the vCPUs of the common domain VM cannot be dispatched on the physical CPU;
• and
• the VMM is further configured to adjust the vCPU of the hotspot domain VM in the running queue of a physical CPU bound to an offline vCPU after the online vCPU is reduced, so that vCPUs of the common domain VM can be dispatched on the physical CPU,
• wherein the hotspot domain virtual machine (VM) is a VM that is depended on by the common domain VM,
• wherein in determining the comprehensive utilization rate of the vCPUs of the hotspot domain VM according to the counted use information of the vCPUs of the hotspot domain VM, the hotspot domain VM is further configured to:
• determine the use time occupancy rate of the vCPUs of the hotspot domain VM according to a sum of operation time and a sum of wait time of all the vCPUs of the hotspot domain VM;
• determine the utilization rate of the vCPUs of the hotspot domain VM according to a sum of non-idle time of all the vCPUs inside the hotspot domain VM and a sum of operation time of all the online vCPUs of the hotspot domain VM;
• and
• determine the comprehensive utilization rate of the vCPUs of the hotspot domain VM according to the use time occupancy rate of the vCPUs of the hotspot domain VM and the utilization rate of the vCPUs of the hotspot domain VM.