You might be able to improve the performance of the applications on a virtual machine by pinning its virtual CPUs to fixed processors. This allows you to prevent the virtual CPUs from migrating across NUMA nodes.
- In the vSphere Client, right-click the virtual machine in the inventory and select Edit Settings.
- Select the Resources tab, and select Advanced CPU.
- In the Scheduling Affinity panel, set the CPU affinity to the preferred processors.
You must manually select the boxes for all processors in the NUMA node. CPU affinity is specified on a per-processor, not on a per-node, basis.