[SOLVED] VM not using the Boost clock


New Member
Jan 29, 2019
Hey guys,

I'm running Proxmox v5 on an AMD EPYC and my main VM (Windows Server 2016) has 32 VCPU's assigned but when I'm checking inside the VM the CPU isn't running higher then the base clock.

Here is my VM config file :

root@peonsfr:/etc/pve/qemu-server# cat 103.conf
agent: 1
boot: cdn
bootdisk: virtio0
cores: 8
cpu: host
hotplug: cpu,disk,network
ide2: iso:iso/virtio-win-0.1.160.iso,media=cdrom,size=315276K
memory: 81920
name: SrvAtlas
net0: virtio=00:0c:29:4b:be:11,bridge=vmbr2
numa: 1
onboot: 1
ostype: win10
scsihw: virtio-scsi-pci
smbios1: uuid=c94f6c0b-1f4a-41c5-aa2e-24f247a2d2c4
sockets: 4
virtio0: local:103/vm-103-disk-0.qcow2,size=300G
vmgenid: 4879b08c-9a18-454f-95ea-dca241bc998d

Any idea on how to get the Boost clock work ?
Nevermind, I just started a Prime95 on the VM and checked the CPU clock on the Proxmox host and it appears that the cpu uses his boost frequence.


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