mpm_event limits
Perhaps use the suggestions here:
StartServers 2
ServerLimit 16
MinSpareThreads 75
MaxSpareThreads 250
ThreadsPerChild 25
MaxRequestWorkers 400
MaxConnectionsPerChild 10000
The Debian defaults in /etc/apache2/mods-available/mpm_event.conf
:
<IfModule mpm_event_module>
StartServers 2
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 64
ThreadsPerChild 25
MaxRequestWorkers 150
MaxConnectionsPerChild 0
</IfModule>
Edited by Chris Croome