New Tuning Settings for DRS and vMotion for VMs with Virtual GPUs in vSphere 8.0 Update 2

This article gives a technical preview of new features in vSphere DRS and vMotion that are available in vSphere 8 Update 2. When a vMotion happens on a VM, the VM’s dirtied memory (RAM) pages are copied over to the destination machine in phases. One of the final phases in that process causes the VM to go through a period called the “stun time”, which is ideally not noticed by the guest operating system or the application running on it. At that point, the guest operating system is stopped for a short period while the final memory page copy takes place. vSphere always works with the VM to minimize that stun time. We describe some further enhancements to that process here in the context of VMs that have vGPUs assigned to them.