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Overcommitting of CPUs on Qemu?

Icehouse compute node with 2 cores allocated on KVM.

nova.conf:

virt_type=qemu
cpu_allocation_ratio=8.0

In Horizon, Admin -> Hypervisors I don't see any kind of CPU overcommit for my hypervisor. It still has 2 VCPUs (total). Is this option not supported for Qemu?

Overcommitting of CPUs on Qemu?

Icehouse compute node with 2 cores allocated on KVM.

nova.conf:

virt_type=qemu
cpu_allocation_ratio=8.0

In Horizon, Admin -> Hypervisors I don't see any kind of CPU overcommit for my hypervisor. It still has But only 2 VCPUs (total). are available in total, not 32. Is this option not supported just for Qemu?physical CPUs?

Overcommitting of CPUs on Qemu?

Icehouse compute node with 2 cores allocated on KVM.

nova.conf:

virt_type=qemu
cpu_allocation_ratio=8.0
cpu_allocation_ratio=16.0

But only 2 VCPUs are available in total, not 32. Is this option supported just for physical CPUs?