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vSphere High Performance Cookbook by Prasenjit Sarkar

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Spotting CPU overcommitment

When we provision the CPU resources, which is the number of vCPUs allocated to running the virtual machines and that is greater than the number of physical cores on a host, is called CPU overcommitment.

CPU overcommitment is a normal practice in many situations; however, you need to monitor it closely. It increases the consolidation ratio.

CPU overcommitment is not recommended in order to satisfy or guarantee the workload of a tier-1 application with a tight SLA. CPU overcommitment may be successfully leveraged to highly consolidate and reduce the power consumption of light workloads on modern, multi-core systems.

Getting ready

To step through this recipe, you need a running ESXi Server, a couple of running CPU-hungry virtual ...

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