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

The correct answer is B. vmmemctl. 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

Section 7 – Administer and Analyze vSphere 6.5 Performance

Question

Options

AswapinRate
Bvmmemctl
Cvmmemctltarget
Dswapped

How the community answered

(35 responses)

A
3% (1)
B
91% (32)
D
6% (2)

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. https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID- 88CA95AD-A583-4EF6-838E-D92C87B0BB00.html

Topics

#memory ballooning#vmmemctl#memory metrics#esxtop

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