apache - prefork, worker, event

In Ubuntu 14.04

a2query -M

Tells event, prefork, worker




https://serverfault.com/questions/88000/how-do-i-tell-if-apache-is-running-as-prefork-or-worker







o disable event MPM, you can do sudo a2dismod mpm_event and after that to enable prefork, you should do sudo a2enmod mpm_prefork.

Finally restart apache:

sudo service apache2 restart

https://askubuntu.com/questions/453377/how-to-enable-event-mpm-apache-2-4-on-ubuntu-14-04-with-thread-safe-php/773121