Apache includes mod_status, which lets you monitor the server status, in real-time. Click the link above to see it running up at http://apache.org.

There are also ways to automate the reporting, so you can gain further insight into performance, and you should be aware that there may be overhead related to this, but, it’s a great diagnostic tool.

All the configuration is already in /etc/httpd/conf/httpd.conf.

Uncomment the line to enable ExtendedStatus, then the lines referring to server-status, the Location tag and all its contents. Finally, enter your IP address in the Allow directive.

Restart Apache.

Access the status with domain.com/server-status. You can add the refresh= option to auto refresh the display.

And, it’s free.