New Article: VMware CPU Hot Plug vNUMA Effects on SQL Server

My latest article on was published today and highlights the potential for performance problems while using the hot-add vCPU feature in ESX 5+ with wide VMs for SQL Server.

This is a potentially hidden problem with serious performance implications that should be checked for if you are using VMware to run wide VMs with greater than 8 vCPUs on NUMA hardware.

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