Why does Disk sda utilization show more than 100%?

Question

linux

Hello! Systematically, the "Disk sda utilization" metric on the chart in zabbix rises more than 100% (for example, 2200%, etc.), which is impossible. I had a hunch about the timeout parameter in the zabbix agent config, set timeout = 30, but it didn’t help
Used on a CentOS 7
machine HDD_iostat.sh is located in /etc/zabbix/zabbix_scripts/

Answer 1

Put iotop (for real-time monitoring) and / or atop (for taking logs) on the machine, with them you can find out which process is loading the disk at peak times.