title: Amazon RDS MYSQL - unresponsive every 15 min's while GB's of space get used and then reclaimed
body: <p>Lately were seeing a problem with our RDS database, about every 15-20 min's the database becomes unresponsive for a minute or two.  While unresponsive GB's of free disk space is used and then regained.  Hard to explain, so I've attached a screenshot of the monitoring graphs, this is for a 1 hour period.  Does anyone have any idea whats going on, or where I should start looking?</p>
  
  <p><img src="https://i.stack.imgur.com/pMYHL.jpg" alt="Screenshot of monitoring data"></p>