Rapid Virtualization Indexing (RVI, formerly known as Nested Page Tables during its development) is an AMD second generation hardware-assisted virtualization technology for the processor memory management unit (MMU).[1][2]
A VMware research paper found that RVI offers up to 42% gains in performance compared with software-only shadow page table implementation.[3] Tests conducted by Red Hat showed a doubling in performance for OLTP benchmarks.[4]
RVI was introduced in the 3rd generation of Opteron processors, code name Barcelona. The Intel equivalent, called Extended Page Tables was introduced in the Nehalem architecture.[5]
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