When CPU Hot Add is disabled, performance increases 2 to 8 percent.

CPU Hot Add Performance in vSphere 6.7

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Leaving CPU Hot Add at its default setting of disabled is one of the performance best practices that we have for large VMs. From the Performance Best Practices Guide for vSphere 6.7 U2: CPU Hot Add is a feature that allows the addition of vCPUs to a running virtual machine. Enabling this feature, however, disables Read more...