From 05fb7e681186e4fdc093900f8fe6018f8abf5444 Mon Sep 17 00:00:00 2001 From: Mienxiu Date: Sun, 15 Oct 2023 23:33:37 +0900 Subject: [PATCH] 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. --- Doc/c-api/memory.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst index e98c178ac27a37e..52ef4170e8810bd 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