Difference between revisions of "Performance"

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(Test results for Different Versions)
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=== Test results for Different Versions ===
=== Test results for Different Versions ===
* [http://www.oooninja.com/2008/05/openofficeorg-getting-faster-benchmark.html Is OpenOffice.org Getting Faster?] benchmarks 5 common operations for OpenOffice.org versions 1.1.5 through 2.4.0 and DEV300_m3

Revision as of 13:50, 28 May 2008

Performance Lead: Liheng Performance Co-Lead: Matthias Huetsch

  • We have new maillist: performance@tools.openoffice.org. Please send mail to new maillist so that everyone concerned can see it.
  • As George Ou has famously said, "It doesn't matter how fast the CPU is, OpenOffice is just bloated."

Project Summary

Project will achieve the goal: maintain good performance and evaluate OOo.

OOo Issues

Issues from End-User


Known areas for improvement

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

Helpful Tooling and Resources

Test Environment

Popular reference configuration(use similar env on Hamburg and Beijing)

CPU:    Core2 Duo 1.5~2G
Memory: 512M
OS:     WindowsXP HOME

Test & Tuning Tools

Benchmarks & Description

If you have some benchmarks, share them here!

Performance Test Results Distribution

Test results for Different Versions


Contrastive Data & Analysis


Work List and Progress

  • Configmgr re-factor, reduces locking overhead & memory usage cf. CWS configrefactor01
  • XML Load
  • Config refactor - reduce seeks/files, better caching
  • Disk Access
  • -Bdirect linking
  • FIXME - Malte - we should really have your list embedded here ...

Integrated improvements

Other Pages

This Wiki page should become the ultimate authority on performance issues. Meanwhile, here are links to performance informationat other places

Personal tools