Zabbix agent CPU usage

[Lake]

Hello

Our vendor want to know how much zabbix-agent is creating CPU load

So I did bash script what is cheduled to crontab to run every minute

#!/bin/bash

sample=18

cpu=$(lscpu | grep ^"CPU(s):" | awk '{ print $2}')

cpu_usage=$(/usr/bin/top -b -n $sample -u zabbix | awk -v CPU="$cpu" -v SAMPLE="$sample" 'NR>7 { sum += $9; } END { print (sum/SAMPLE)/CPU; }')

echo $cpu_usage > /tmp/zabbix-cpu-usage.txt

added to zabbix_agentd.conf
UserParameter=zabbix.cpu-usage,cat /tmp/zabbix-cpu-usage.txt


So is there better way?
and
Is my count right?


// Lake