Memory Usage Restrictions in WHM/cPanel
Location - (Home >> Service Configuration >> Apache Configuration >> Memory Usage Restrictions)
This function calculates and sets a new Apache memory limit. This limit
applies to each Apache process, not to all Apache processes combined.
For more information, visit the RLimitMEM core - Apache HTTP Server
A process memory limit increases the stability of your server, but may reduce performance slightly.
Set a memory usage limit
To set a new limit for Apache processes, perform the following steps:
1.Select Enabled under RLimitMEM Settings.
2.Enter a value in the text box. The RLimitMEM value must be an integer greater than 1.
After you set a new memory limit, you must Restart
Apache in order for the change to take effect. Select the Restart Apache? check-box
to restart Apache. Once you restart, the new limit will be set and it would improve your server stability and protect server from excessive memory users.