I have converted the following tables on the English wiki to InnoDB: cur links brokenlinks recentchanges user watchlist archive
The new 'searchindex' table needs to stay as MyISAM for the fulltext index support.
I have not yet converted: old ...images, ipblocks, math yadda yadda...
Most of them because I'm lazy and they're low-profile. I didn't do 'old' yet because it's, well, FRIGGING HUGE and will take some time to convert. And, it's read relatively infrequently compared to cur & co, so again it's lower priority. I'll convert it later if things are moving well.
My patented 'load a big special page and then tail -f the logs to see if other people are still able to access stuff' preliminary benchmark seems positive so far.
Eloquence pointed out a problem with the page move code where I had forgot to merge in the changes relating to search index fields. This is fixed, and I don't think there are any other such remaining, though there might still be some rare cases where an operation that should update a search index doesn't.
At some point we'll want to think about explicit support for transactions, so we don't have to worry about broken operations, say, renaming an article's current revision but not it's old revisions or updating link tables.
I'll merge the code into CVS in the morning after I'm awake and my brain works again, but there's nothing terribly new to it; just some merging in from the older innodb branch that's sitting in there somewhere already.
-- brion vibber (brion @ pobox.com)