1In Win32, DLL's are "pre-linked" using a specified base address. 2When the DLL is loaded, an attempt is made to place it at 3that address. If that address is already in use, a new base address 4is selected, and the DLL subject to fixups. Apparently, these 5fixups are very slow, and significant performance gains can be 6made by selecting a good base address. 7 8This document is to allocate base addresses to core Python 9and Python .PYD files, to give a better change of optimal performance. 10This base address is passed to the linker using the /BASE 11command line switch. 12 13 14Python.exe/Pythonw.exe - 1d000000 - 1e000000 (-1) 15Python.dll - 1e000000 - 1e100000 (-1) 16 17Standard Extension Modules 1e100000 - 1e200000 "" 18 - _symtable 1e100000 - 1e110000 pyd removed in 2.4 19 - bsddb 1e180000 - 1e188000 20 - _tkinter 1e190000 - 1e1A0000 21 - parser 1e1A0000 - 1e1B0000 pyd removed in 2.4 22 - zlib 1e1B0000 - 1e1C0000 23 - winreg 1e1C0000 - 1e1D0000 pyd removed in 2.4 24 - _socket 1e1D0000 - 1e1E0000 25 - _sre 1e1E0000 - 1e1F0000 pyd removed in 2.4 26 - mmap 1e1F0000 - 1e1FFFFF pyd removed in 2.4 27 28More standard extensions 1D100000 - 1e000000 29 - pyexpat 1D100000 - 1D110000 30 - select 1D110000 - 1D120000 31 - unicodedata 1D120000 - 1D160000 32 - winsound 1D160000 - 1D170000 33 - bZ2 1D170000 - 1D180000 34 - datetime 1D180000 - 1D190000 pyd removed in 2.4 35 - _csv 1D190000 - 1D1A0000 pyd removed in 2.4 36 - _ctypes 1D1A0000 - 1D1B0000 37 38Other extension modules 39 - win32api 1e200000 - 1e220000 40 - win32ras 1e220000 - 1e230000 41 - win32lz 1e230000 - 1e240000 42 - timer 1e240000 - 1e250000 43 - mmapfile 1e250000 - 1e260000 44 - win32pipe 1e260000 - 1e270000 45 - avl 1e270000 - 1e270000 46 - dbhash 1e280000 - 1e290000 47 - win32net 1e290000 - 1e2A0000 48 - win32security 1e2A0000 - 1e2B0000 49 - win32print 1e2B0000 - 1e2c0000 50 - <unused> 1e2d0000 - 1e2e0000 51 - win32gui 1e2e0000 - 1e2f0000 52 - _imaging 1e2f0000 - 1e300000 53 - multiarray 1e300000 - 1e310000 54 - win32help 1e310000 - 1e320000 55 - win32clipboard 1e320000 - 1e330000 56 - win2kras 1e330000 - 1e340000 57 - pythoncom 1e340000 - 1e400000 58 - win32ui 1e400000 - 1e500000 59 - win32uiole 1e500000 - 1e600000 60 - pywintypes 1e600000 - 1e700000 61 - win32process 1e700000 - 1e800000 62 - odbc 1e710000 - 1e720000 63 - dbi 1e720000 - 1e730000 64 - win32file 1e730000 - 1e740000 65 - win32wnet 1e740000 - 1e750000 66 - win32com.shell 1e750000 - 1e760000 67 - win32com.internet 1e760000 - 1e770000 68 - win32com.exchange 1e770000 - 1e780000 69 - win32com.exchdapi 1e780000 - 1e790000 70 - win32com.axscript 1e790000 - 1e7a0000 71 - win32com.axdebug 1e7b0000 - 1e7c0000 72 - win32com.adsi 1e7f0000 - 1e800000 73 - win32event 1e810000 - 1e820000 74 - win32evtlog 1e820000 - 1e830000 75 - win32com.axcontrol 1e830000 - 1e840000 76 77 78