Hotplug vCPUs to a VM in Xenserver:

To hotplug vCPUs to a VM in Xenserver, check whether updated xenserver tools are installed in the VM and then use the following command,

 vm-vcpu-hotplug new-vcpus=<new_vcpu_count> uuid=<uuid of the VM>

You can dynamically adjust the number of VCPUs available to a running paravirtual Linux VM within the number bounded by the parameter VCPUs-max.

Windows VMs always run with the number of VCPUs set to VCPUs-max and must be rebooted to change this value.

Note:

To find ‘your_vms_uuid’, you can use:


xe vm-list name-label=VMname