When you give a guest OS multiple virtual CPUs (vCPU), the virtual machine has to assign them to physical CPUs (pCPU). I can't find any info on how most VMs handle this. There are 2 broad categories: strict co-scheduling (also called gang scheduling), and relaxed co-scheduling. I'm pretty sure VMware ESXi and MS Hyper-V use relaxed.
Does anyone know about any others?
- VMware Workstation or Fusion
- Parallels Desktop
and any others that I may have missed...