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  *disclaimer* This post is based on my findings so you might experience different stats, but the general guidelines are sound to my knowledge *disclaimer* NUMA or Non Uniform Memory Access has been around in Intel processors since 2007 when they introduced their Nehalem processors. NUMA and vNUMA VMware has since vSphere v5.0 supported that the guest OS is exposed to the NUMA of the underlying processors. It’s automatically enabled if you… Read More

I know this is old news, but at a recent meeting at vmware 4 different customers agreed that they were taught something different by instructors in Denmark about Co-scheduling. The myth that all 4 of us believed in states that: “An 8 vCpu machine can only get cpu time, if 8 cores are available to the scheduler”, so if 7 cores were available the machine would wait, which you could see from… Read More

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The weblog of an IT pro specializing in virtualization, storage, and servers

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A Virtualization Blog

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Yellow Bricks

by Duncan Epping