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-rw-r--r--Doc/c-api/memory.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst
index 87b8603..27005f9 100644
--- a/Doc/c-api/memory.rst
+++ b/Doc/c-api/memory.rst
@@ -620,7 +620,8 @@ 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