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How to monitor usage of system resources in a period of time using atop?

Question

How to check what process loads CPU, memory and other system resources in a period of time using atop utility?

Answer

1. Connect to the server via SSH
2. Install atop package:
   • For RHEL/CentOS :# yum install epel-release# yum install atop
   • For Debian/Ubuntu :# apt-get install atop
3. Start atop service to begin automatic system resources logging:# systemctl start atopNote: atop automatically creates a task in cron to begin logging at midnight if it is not running.
4. Adjust interval to the preferences:
   • For RHEL/CentOS :Open the file /etc/sysconfig/atop and modify the line and set required interval (in seconds):
     INTERVAL=60
   • For Debian/Ubuntu :
     For atop version 1.23 and lower:Open the file /etc/init.d/atop (or /etc/default/atop, or /usr/share/atop/atop.daily) and modify the line and set required interval (in seconds):
     INTERVAL=60
     
     Starting from atop version 1.24
     Open the file /etc/atoprc and add the following line
     interval 60
     
     Once the file is adjusted, restart the atop service:# systemctl restart atop
5. Logged data might be opened via the command:# atop -r /var/log/atop/atop_*****Replace *** with actual log value (date). To move between intervals use arrow buttons or hotkeys t and Shift+T .Note: For more information on available hotkeys refer to the atop manual page.
6. To disable atop use the following commands:# mv /etc/cron.d/atop /root/atop# systemctl stop atop

Question How to check what process loads CPU, memory and other system resources in a period of time using atop utility? Answer

Question How to check what process loads CPU, memory and other system resources in a period of time using atop utility? Answer