How to get Memory Usage from Windows Server 2012 R2 in OpenStack

I have an Rocky OpenStack cluster, I want to monitor memory usage of instances.

monitoring of Linux instances is OK but Windows Server instances do not provide any data for memory usage.

I've searched a lot, I've installed balloon driver on windows instances but not worked for me. All components are updated to latest version.

So how can I get memory usage data from them?

In PowerShell

Get-WmiObject -Class win32_operatingsystem -Property TotalVisibleMemorySize,FreePhysicalMemory

Or

wmic os get freephysicalmemory

Or

systeminfo

StackExchange DevOps Q#8811, answer score: 2