This VMware report shows the amount of active virtual machine memory usage. It is shown as a percentage of actual configured memory of the physical machine. The amount of VM active memory usage can be determined as follows:
- Active Usage % = Actively used memory / VM configured memory size
Definition
Even though a VM may have a large amount of memory allocation, the OS and VMware applications may only be using a small percentage of it. VM Active memory usage varies depending upon two conditions:
- When memory resources are scarce, VMware ballooning may be able to reclaim memory from VMs that not actively using their full allocations and preferentially assign it where it is needed, freeing memory for VMware applications that require it.
- VMware host memory saturation occurs when active memory for all VMs exceeds the host's total memory, resulting in host-level memory swapping and degraded performance issues.
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