Difference between revisions of "Performance/To-Dos"
From Apache OpenOffice Wiki
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[http://tools.openoffice.org/performance/performance-activities-overview.html OpenOffice.org Performance Activities as of 2005]. | [http://tools.openoffice.org/performance/performance-activities-overview.html OpenOffice.org Performance Activities as of 2005]. | ||
| + | |||
| + | Moved here from the main performance wiki page: | ||
| + | |||
| + | === Known areas for improvement === | ||
| + | |||
| + | ==== Configmgr'''[new]''' ==== | ||
| + | |||
| + | * [http://wiki.services.openoffice.org/wiki/Configmgr_Refactoring Configmgr Refactoring] | ||
| + | * CWS[DEV300/configtune00] | ||
| + | |||
| + | ==== Component issues ==== | ||
| + | |||
| + | * [[Calc/To-Dos/Performance|Calc]] - lots to do | ||
| + | * [[Writer_Performance|Writer]] | ||
| + | * [[Impress_Performance|Impress]] | ||
| + | * [[Base_performance|Base]] - lots to do | ||
| + | |||
| + | ==== system issues ==== | ||
| + | * Linux / Linking - relocation processing is very slow ( [http://ooocon-ljudmila.kiberpipa.org/media/Bloated_Michael_Meeks/video.ogg ogg video], [http://go-oo.org/~michael/performance.odp 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 [http://sourceware.org/ml/binutils/2005-10/msg00436.html] - 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 [http://blogs.msdn.com/oldnewthing/archive/2005/08/05/448073.aspx 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 | ||
| + | |||
[[Category:Performance]] | [[Category:Performance]] | ||
Revision as of 16:36, 5 February 2009
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:
Contents
Known areas for improvement
Configmgr[new]
- Configmgr Refactoring
- CWS[DEV300/configtune00]
Component issues
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
