Percona server has some useful InnoDB status information in the slow query log.
The Percona Performance Monitor can provide useful graphs from these
This task is to add some of the most useful ones, but with less code.
The code should also be engine independent, so that it is easy to add
monitoring of other engines!
The current task will add the following new information to the slow query log if enabled with
Engine_time is how many milliseconds is spent inside engine calls (similar as with analyze).
Page_* variables are for now only for InnoDB.