High mysql disk writes normal?

Hi all!
I installed a new icinga2 system on Ubuntu 18.04 with mysql database. Currently there a 104 services monitored.
When I carry out a iotop on the system, it tells me mysql process is constantly writing to disk with 60-100MB/s
Is that normal?
(icinga2 version 2.11.4)

No, definitly not. Example: 100 hosts with 1800 services have less than 1MB/s in total.