I have a 48 core Dell Poweredge R815 (4 chips x 12 cores) and I can't seem to use more than 33% of the CPU with a single VM. I've got a Windows Server 2008 KVM installed and I've been playing with the CPU/core settings and for some reason it seem like each Core I add utilizes 1 physical core. The problem with this is Proxmox has a max of 16 and this server has 48 meaning my VM can only utilize 33% of the CPU. When I run the VM at 100% CPU the node is only running 33%.
Is this a limitation of the software or is something not working right? I was under the impression no matter how many virtual CPUs/Cores you assign the VM it should be able to use 100% of the physical CPU available.
I am using the most recent version of Proxmox.
Has anyone else had this issue?