We have a VPS server and one drupal site hosted on it.
There is some issue with regards to the Apache configuration, the website runs out of memory and shows fatal error sometimes.
The hosting people have replied below:
--------Switch to worker or event and use the "ulimit -s 128" (add the ulimit line at the beginning of the apache init script: /etc/init.d/httpd after you switch to event or worker)------
Can someone explain how to do this please?