From: Mienxiu <82512658+mienxiu@users.noreply.github.com> Date: Mon, 16 Oct 2023 18:52:13 +0000 (+0900) Subject: C-API docs: Clarify the size of arenas (#110895) X-Git-Tag: v3.13.0a2~450 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f07ca27709855d4637b43bba23384cc795143ee3;p=thirdparty%2FPython%2Fcpython.git C-API docs: Clarify the size of arenas (#110895) Clarify the size of arenas From 3.10.0 alpha 7, the pymalloc allocator uses arenas with a fixed size of 1 MiB on 64-bit platforms instead of 256 KiB on 32-bit platforms. --- diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst index e98c178ac27a..52ef4170e881 100644 --- a/Doc/c-api/memory.rst +++ b/Doc/c-api/memory.rst @@ -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 ` of the