You can specify how the virtual CPUs of a virtual machine can share physical cores on a hyperthreaded system.
Two virtual CPUs share a core if they are running on logical CPUs of the core at the same time. You can set this for individual virtual machines.
Launch the vSphere Client and log in to a vCenter Server system.
- In the vSphere Client inventory panel, right-click the virtual machine and select Edit Settings.
- Click the Resources tab, and click Advanced CPU.
- Select a hyperthreading mode for this virtual machine from the Mode drop-down menu.