Seems there are a fair few variables and options changed in the course of development. These don't seem to make it to the documentation, especially pages like: https://mariadb.com/kb/en/mariadb/server-system-variables/ https://mariadb.com/kb/en/mariadb/server-status-variables https://mariadb.com/kb/en/mariadb/mysqld-options And their per subsection equivalents. Please make an effort to add/update these pages after a commit. After all, if a user can't see a change is made, or is referring to out of date documentation, then they aren't making use of the effort you put into making a change. If you made the change you are in the best position to describe it. git log sql/sys_vars.cc has quite a number of examples including 2ab49689c689b1c1daeb080ea568c268c5256952 cdb8e6ed38ce641a6cb90a4a93bc5ff15f3ba9f2 a978bdda1e2de35c79e432f026869e163657a263 -- -- Daniel Black, Engineer @ Open Query (http://openquery.com.au) Remote expertise & maintenance for MySQL/MariaDB server environments.