title: Should I perform table optimization on MySql InnoDB tables?
body: <p>I have MySQL (actually - MariaDB) database with some InnoDB tables.
  Records in such tables are never deleting, only inserting and updating.
  Number of records are already relatively big - around few millions.
  These tables, I believe, have never been optimized since creation.</p>
  <p>Should I optimize such tables?
  How to verify if I should optimize such tables?</p>