Configure Multi-Processing modules contains two parts. First I override default Apache configuration for event mode that I picked during compilation. In that case you will know what is actually configured. So let’s start with that first.
At the bottom of httpd.conf you need to uncomment the line:
It will enable advanced Apache httpd MPM configuration and it will override the defaults.
Now edit enabled file:
sudo vi /usr/local/apache2/conf/extra/httpd-mpm.conf
This file contains configuration of all MPM There are configuration for each MPM module, so make sure that you are setting correct values. I enabled event mode, so this is the section I care about:
<IfModule mpm_event_module> StartServers 5 MinSpareThreads 75 MaxSpareThreads 250 ThreadsPerChild 25 MaxRequestWorkers 400 MaxConnectionsPerChild 0 </IfModule>