RHV: Virtual Machine memory usage shown in the Admin Portal is higher than expected
Issue
- Memory usage shown for the VM in the Admin Portal is too high and incorrect
- The value shown in the Admin Portal seems to be based on "free" memory only, disregarding buffers and caches and counting those as used.
- After doing some heavy I/O in the VM, memory usage goes to 99%
- Dropping caches inside the VM makes the memory usage go back to the correct value.
Environment
- Red Hat Virtualization 4.x
- Red Hat Enterprise Linux 6 and 7 Guests.
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