What counter should an administrator check to determine if a virtual machine is ballooning?

What counter should an administrator check to determine if a virtual machine is ballooning?
A . swapinRate
B . vmmemctltarget
C . swapped
D . vmmemctl

View Answer

Answer: D

Explanation:

Memory Ballooning is the memory reclamation technique used by hypervisor to reclaim the memory back from the virtual machine. When ESXi host running low on physical memory, It uses ballooning driver (vmmemctl.sys) to determine the how much memory from virtual machines can be get back to prevent the hypervisor swapping.

Reference:

https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID-88CA95AD­A583-4EF6-838E-D92C87B0BB00.html