RedHat to rocky-linux-8 Grafana Disk IO Utilization becomes high

I have a question
The original system used was RedHat
Install Mysql above
But I only changed the system to rocky-linux-8
My Grafana Disk IO Utilization value has increased
The mysql parameter files, machine specifications, and other hardware are all the same
The value has increased by about 10% because this change is quite large.
I want to ask if there is any difference between the two systems.


RedHat what? RHEL 8?