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[3.12] C-API docs: Clarify the size of arenas (GH-110895) #110946

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Oct 16, 2023
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[3.12] C-API docs: Clarify the size of arenas (GH-110895) #110946

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3 changes: 2 additions & 1 deletion Doc/c-api/memory.rst
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Expand Up @@ -626,7 +626,8 @@ The pymalloc allocator

Python has a *pymalloc* allocator optimized for small objects (smaller or equal
to 512 bytes) with a short lifetime. It uses memory mappings called "arenas"
with a fixed size of 256 KiB. It falls back to :c:func:`PyMem_RawMalloc` and
with a fixed size of either 256 KiB on 32-bit platforms or 1 MiB on 64-bit
platforms. It falls back to :c:func:`PyMem_RawMalloc` and
:c:func:`PyMem_RawRealloc` for allocations larger than 512 bytes.

*pymalloc* is the :ref:`default allocator <default-memory-allocators>` of the
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