Add some facts to oplog.
wip
no, don't remove
typos
ooops
don't count the whole table.
dont update.
use less data
convert to chat.
dont send all rooms
lighten up a bit
only fetch rooms once.
more aggressive
Autoscale rooms. No fixed room count to move around by hand.
typo makes everything worse. also, index.
Add facts to chat-benchmark.
side-port misordering-is-ok to this branch