Get Number of CPU in OS X (or FreeBSD)

Posted:

Tuesday, April 28th, 2015

Last modified:

Tuesday, April 28th, 2015

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Get the number of CPUs in Mac OS X

This will be double your physical CPU if hyperthreading is enabled (it probably is).

$ sysctl -n hw.ncpu
8

Get the number of physical CPUs

$ sysctl -n hw.physicalcpu
4

Get the number of logical CPUs

$ sysctl -n hw.logicalcpu
8

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