ESXi host memory states

In times of contention, the ESXi host will use different techniques that allow you to overprovision the memory assignment for the VMs. As we already explained, overcommitment means that you assign more virtual resources than your physical hypervisor has. This is quite a common approach, but you need to be aware of what happens once all the VMs start to utilize such resources. This situation is called contention.

We have two different contentions when talking about resources: CPU and memory contention. There is nothing specific regarding CPU contention—the shares will simply kick in and the VMs will get the only subset of configured resources based on the shares. But for memory, it is more complicated.

vSphere 6.7 uses ...

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