>APC Caching can show a major improvement in MediaWikis... at least 4x.
>If APC is not turned on, it probably should be.

APC opcode caching was added for all the openSUSE blogs and wikis back in November, and it has been a major improvement. I shudder to think of how the new wiki would run without it.

However, this does bring up another point. Right now, we cache variables with memcached. We could switch variable caching to APC, which is arguably faster. This would most likely be a very minor improvement, but it is a possibility.

Minor Correction From Last Email:

Localization caching is a 1.16 feature. The 1.16 release is slightly slower than 1.15 by default, and enabling localization cache will put it back on the same level.