vNUMA?

Essendon

Can someone please explain vNUMA to me? I simply cant seem to wrap my head around this. I downloaded a whitepaper from vmware but the jargon in there makes it so much harder to understand.

Just a few lines would suffice.

Thanks!

mattlee09

"NUMA architecture places memory with each CPU on a system to create NUMA nodes. Each of today's CPUs have multiple cores which results in a NUMA node with a given number of cores and RAM. For example, Nehalem-EX systems have four sockets each with 8 cores for a total of 32 cores. If this system had 256GB of RAM total, it would mean that each socket had 64GB of RAM."

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What if your VM needs to be bigger than a NUMA node? One of the great new features in vSphere 5 is vNUMA or the ability for NUMA to be presented inside the VM to the guest OS."

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Without vNUMA, the OS and apps are not aware of the NUMA architecture and will just treat the vCPUs and vRAM as one big pool and assign memory and processes."

virtualTodd's Big Blog: NUMA Performance Considerations on vSphere 5