Openfire 4.0.3 using high amount of read IOPS

We have noticed our Openfire VM is very chatty specially on read (using 1400 IOPS) which is more than even our domain controllers.      On average we have only have about 40 - 50 users logged in.  Are there any settings we can look at disabling to make the application less drive intensive?   It's running on Ubuntu 16.04.  

Please advise.

Thanks.