[Baypiggies] Discussion for newbies/beginner night talks - test results

Kelly Yancey kelly at nttmcl.com
Fri Feb 16 00:15:50 CET 2007

Shannon -jj Behrens wrote:
> I saw a talk at PyCon two years ago that said that Python would never
> give memory back to the OS.  That's probably changed, but I'd check
> first.

   Only Python 2.5 currently frees memory back to the system.  From 

	Evan Jones's patch to obmalloc, first described in a talk at
	PyCon DC 2005, was applied. Python 2.4 allocated small objects
	in 256K-sized arenas, but never freed arenas. With this patch,
	Python will free arenas when they're empty. The net effect is
	that on some platforms, when you allocate many objects, Python's
	memory usage may actually drop when you delete them and the
	memory may be returned to the operating system. (Implemented by
	Evan Jones, and reworked by Tim Peters.)


More information about the Baypiggies mailing list