This article is written by the VMWare performance team and was updated July of 2019
https://blogs.vmware.com/performance/2017/03/virtual-machine-vcpu-and-vnuma-rightsizing-rules-of-thu...
It's recommendation is to make every VM have one socket and then just increase cores per socket to reach the required vCPUs. They only list two reasons to vary from this recommendation
- The number of total vCPUS required exceeds the number of cores on the CPU. For example, the CPU has 10 cores and a VM needs 12 vCPUs. In this case you would need to assign 2 sockets and 6 cores per socket
- The amount of memory needed by a VM exceeds the amount allocated to one NUMA node
None of the VMs I am running fall into either situation, hence all of my VMs run with one socket. Is this article incorrect?
