Performance/To-Dos

The new performance project just started, and we have to sort out our next todo's.

For now, you might use my old list from 2005, which might be a little bit outdated. Maybe you find some hints in the area of your expertise where you want to start working on:

OpenOffice.org Performance Activities as of 2005.

Moved here from the main performance wiki page:

Known areas for improvement

Configmgr[new]

• Configmgr Refactoring
• CWS[DEV300/configtune00]

Component issues

• Calc - lots to do
• Writer
• Impress
• Base - lots to do

system issues

• Linux / Linking - relocation processing is very slow ( ogg video, odp slides ) several possible ways to fix that
  • re-ordering symbol & elf hash tables to improve cache locality, lots of good & simple ideas here.
  • -Bdirect implementation [1] - gaining little traction.
  • exporting Vague linkage more cleverly & using RTLD_LOCAL where possible
  • basic linker optimizations:
    • don't export *UND* in .hash table
    • sort syms & dynsym entries more intelligently
    • .hashvals optimisation
• Linux / I/O scheduling & pre-loading is poor

General I/O & memory issues

• Image strip layout - our images strips are huge & unwieldy, layed out horizontally and are 'cached' in scattered files - this is fixed in CWS ka009, which never seems to get integrated.
• Configuration information scattered across many files
• UI configuration - tons of scattered files
• .rdb files - loads of empty space, mmap + random access pattern