Eric Sloof

This paper describes the performance implications of using virtual topology—introduced in VMware vSphere 8.0—in several workloads.

Virtual topology simplifies a virtual machine’s CPU assignments by exposing the appropriate topology at various levels.

These topology levels include virtual sockets, virtual non-uniform memory access (vNUMA) nodes, and virtual last-level caches (LLC).

VMware's testing shows that using virtual topology (also known as vTopology or vTopo) for some typical applications run in a vSphere 8.0 VM will improve the application performance. In some cases, the application performance will remain unchanged.

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