I try to measure the real memory (RAM) use of an ESXi host, member of a vSphere 5 infrastructure.
I need to understand how much RAM is used by a given VM, a Windows Server 2008 R2 guest.
- The memory size is 6144 MB = 6 GB.
- The "Host memory" and "Consumed host memory" are 6205 MB
- Windows' Task Manager (inside the VM) reports the used VM as 3,59 GB
- Guest Memory % is 6% (6% of what?)
- Shared Memory, zipped and baloon are reported as 0
What values shows the amount of host RAM really used?
Given the ESXi host have 64 GB RAM,how many similar VM can I start before degrading performance?
From the customer's point of view the question is critical, becaus the answer can help calculating the money they must invest to increase their infrastructure...
Should we say "Try adding VMs till the performance start decreasing"???
Regards
marius