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