We did the following on our MediaWiki server with 3000 users and 150,000 articles:
- Moved Lucene to a separate server. HUGE HUGE benefit in lowering memory use (a
- Installed Extension:APC. 50% speedup in page rendering.
- Installed memcached. Another 50% speedup in page rendering.
- Code-reviewed our custom-written extensions and optimized them. Another 50% speedup in
page rendering.
We also increased physical RAM to 6GB (from 2GB), which may or may not be an option for
you.
DanB