Feature Requests item #1449496, was opened at 2006-03-14 12:04 Message generated for change (Comment added) made by gfe You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1449496&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Windows Group: None Status: Open Resolution: None Priority: 5 Submitted By: Martin Gfeller (gfe) Assigned to: Nobody/Anonymous (nobody) Summary: Python should use 3GB Address Space on Windows Initial Comment: Python runs fine using a 3GB address space on 32bit Windows. To take advantage of this feature, Python should be linked using the /LARGEADDRESSAWARE flag of the linker. For details, please refer to: http://msdn.microsoft.com/library/en- us/memory/base/4gt_ram_tuning.asp As most Windows users just use pre-built executables, this would be a worthwhile change. Best regards, Martin Gfeller ---------------------------------------------------------------------- >Comment By: Martin Gfeller (gfe) Date: 2006-03-20 13:08 Message: Logged In: YES user_id=884167 Tim, the /LARGEADDRESSAWARE flag just specifies whether python.exe is enabled for #GB addresses, i.e. doesn't use dubious pointer manipulations that make it fail with a 3GB address space. It does not cause Windows to provide the 3GB address space, nor to reduce cache and pool size - that is controlled separately by the /3GB boot switch (and various registry settings for finer control of cache and pool sizes). In other words, it is an enabling declaration, not a control parameter. Josiah, I don't compile on Windows, hence cannot provide a patch. What I did is applying the flag to the executable by using editbin.exe. Brgds, Martin ---------------------------------------------------------------------- Comment By: Tim Peters (tim_one) Date: 2006-03-18 03:38 Message: Logged In: YES user_id=31435 MS also says "However, the file cache, paged pool, and non-paged pool are smaller, which can adversely affect applications with heavy networking or I/O", so the rationale for making this change is clear as mud. That is, it's not a pure win: some apps win at the expense of others. ---------------------------------------------------------------------- Comment By: Josiah Carlson (josiahcarlson) Date: 2006-03-18 01:38 Message: Logged In: YES user_id=341410 Microsoft claims that the switch does not negatively affect users on systems without large amounts of memory, and the extra gig of memory on platforms which could use it would be nice. Can you offer a patch? ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1449496&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
