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Diffstat (limited to 'Doc/library/multiprocessing.rst')
| -rw-r--r-- | Doc/library/multiprocessing.rst | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst index 8575fb50cd..20385f3966 100644 --- a/Doc/library/multiprocessing.rst +++ b/Doc/library/multiprocessing.rst @@ -868,8 +868,13 @@ Miscellaneous .. function:: cpu_count() - Return the number of CPUs in the system. May raise - :exc:`NotImplementedError`. + Return the number of CPUs in the system. + + This number is not equivalent to the number of CPUs the current process can + use. The number of usable CPUs can be obtained with + ``len(os.sched_getaffinity(0))`` + + May raise :exc:`NotImplementedError`. .. seealso:: :func:`os.cpu_count` |