Você pode encontrar as informações com o módulo mod_info
No meu servidor eu tenho isso
Module Name: prefork.c
Content handlers: none
Configuration Phase Participation: none
Request Phase Participation: none
Module Directives:
User - Effective user id for this server
Group - Effective group id for this server
ChrootDir - The directory to chroot(2) into
ListenBacklog - Maximum length of the queue of pending connections, as used by listen(2)
Listen - A port number or a numeric IP address and a port number, and an optional protocol
SendBufferSize - Send buffer size in bytes
ReceiveBufferSize - Receive buffer size in bytes
StartServers - Number of child processes launched at server startup
MinSpareServers - Minimum number of idle children, to handle request spikes
MaxSpareServers - Maximum number of idle children
MaxClients - Maximum number of children alive at the same time
ServerLimit - Maximum value of MaxClients for this run of Apache
GracefulShutdownTimeout - Maximum time in seconds to wait for child processes to complete transactions during shutdown
Current Configuration:
In file: /etc/apache2/apache2.conf
133: StartServers 5
134: MinSpareServers 5
135: MaxSpareServers 10
136: MaxClients 150
178: User www-data
179: Group www-data
In file: /etc/apache2/ports.conf
9: Listen 80
17: Listen 443