Description
http://docs.mongodb.org/manual/administration/production-notes/#mongodb-and-numa-hardware
It seems some people are getting confused about the NUMA guidelines when they have exactly one physical processor, in which case the discussion is moot.
Examples of confusion:
With a single physical processor, it doesn't matter whether you use "numactl --interleave=all" or not.
NUMA settings only matter with > 1 physical processor.