Performance/Reorder Symbols For Libraries

Reorder code/data for libraries to improve file I/O

The comprehensive analysis of the cold start up behavior of OpenOffice.org shows that file I/O is main bottleneck. About 80% of the start up time is spent waiting for data from the disk. Most file I/O depends on library loading. This part describes what can be done to reduce I/O time for loading OpenOffice.org libraries. The main ideas are system independent but the solutions must be system/compiler specific. The following chapters describe in detail how we want to reorder code/data within the libraries.

Windows

This chapter describes the solution for the Windows platform.

Microsoft Visual Studio 2008

OpenOffice.org uses the Microsoft Visual Studion 2008 C/C++ compiler suite for building (called wntmsci12[.pro]). What options are available to support us reordering code/data in libraries. If you start the C/C++ compiler with the help option

cl.exe /?

you can see all supported options.

Microsoft (R) 32-Bit C/C++-Optimierungscompiler Version 15.00.30729.01 für 80x86
 
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