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In Win32, DLL's are "pre-linked" using a specified base
address.When the DLL is loaded, an attempt is made to place it
atthat address. If that address is already in use, a new base
addressis selected, and the DLL subject to fixups. Apparently,
thesefixups are very slow, and significant performance gains can
bemade by selecting a good base address.
This document is to allocate base addresses to core Pythonand
Python .PYD files, to give a better change of optimal
performance.This base address is passed to the linker using the
/BASEcommand line switch.
Python.exe/Pythonw.exe - 1d000000 - 1e000000 (-1)Python.dll -
1e000000 - 1e100000 (-1)
Standard Extension Modules 1e100000 - 1e200000 ""- _symtable
1e100000 - 1e110000 pyd removed in 2.4- bsddb 1e180000 - 1e188000
pyd removed in 3.0
- _tkinter 1e190000 - 1e1A0000- parser 1e1A0000 - 1e1B0000 pyd
removed in 2.4- zlib 1e1B0000 - 1e1C0000- winreg 1e1C0000 -
1e1D0000 pyd removed in 2.4- _socket 1e1D0000 - 1e1E0000- _sre
1e1E0000 - 1e1F0000 pyd removed in 2.4- mmap 1e1F0000 - 1e1FFFFF
pyd removed in 2.4
More standard extensions 1D100000 - 1e000000- pyexpat 1D100000 -
1D110000- select 1D110000 - 1D120000- unicodedata 1D120000 -
1D160000- winsound 1D160000 - 1D170000
- bZ2 1D170000 - 1D180000- datetime 1D180000 - 1D190000 pyd
removed in 2.4- _csv 1D190000 - 1D1A0000 pyd removed in 2.4-
_ctypes 1D1A0000 - 1D1B0000
Other extension modules- win32api 1e200000 - 1e220000- win32ras
1e220000 - 1e230000- win32lz 1e230000 - 1e240000- timer 1e240000 -
1e250000- mmapfile 1e250000 - 1e260000- win32pipe 1e260000 -
1e270000
- avl 1e270000 - 1e270000- dbhash 1e280000 - 1e290000- win32net
1e290000 - 1e2A0000- win32security 1e2A0000 - 1e2B0000- win32print
1e2B0000 - 1e2c0000- 1e2d0000 - 1e2e0000- win32gui 1e2e0000 -
1e2f0000- _imaging 1e2f0000 - 1e300000- multiarray 1e300000 -
1e310000- win32help 1e310000 - 1e320000- win32clipboard 1e320000 -
1e330000- win2kras 1e330000 - 1e340000- pythoncom 1e340000 -
1e400000
- win32ui 1e400000 - 1e500000- win32uiole 1e500000 - 1e600000-
pywintypes 1e600000 - 1e700000
