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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 at
that address. If that address is already in use, a new base address
is selected, and the DLL subject to fixups. Apparently, these
fixups are very slow, and significant performance gains can be
made by selecting a good base address.
This document is to allocate base addresses to core Python
and Python .PYD files, to give a better change of optimal performance.
This base address is passed to the linker using the /BASE
command line switch.
Python.dll - 1e100000 - 1e180000
Standard Extension Modules - 1e180000 - 1e200000
- socket 1e180000 - 1e188000
- _tkinter 1e190000 - 1e1A0000
Other extension modules
- win32api 1e200000 - 1e220000
- win32ras 1e220000 - 1e230000
- win32lz 1e230000 - 1e240000
- timer 1e240000 - 1e250000
- mmapfile 1e250000 - 1e260000
- avl 1e270000 - 1e270000
- dbhash 1e280000 - 1e290000
- win32net 1e290000 - 1e2A0000
- oleauto 1e2A0000 - 1e2B0000
- oleautsv 1e2B0000 - 1e2c0000
- nspi 1e2d0000 - 1e2e0000
- npipw.dll 1e2e0000 - 1e2f0000
- _imaging 1e2f0000 - 1e300000
- multiarray 1e300000 - 1e310000
- bsddb 1e320000 - 1e330000
PythonWin
win32ui 1e400000 - 1e500000
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