“Using mod_status, you can tell who is looking at what on
your server right now. You can tell how many people are on the web
site right now. And you can see other things that may not be of
particular interest to your customer, but is useful to you as the
site administrator.“
“… If you want more information than this, you need to use
ExtendedStatus. By default set to Off, ExtendedStatus gives
additional information about what your server is up to. In addition
the information above, you’ll also get a table listing each child
and what it is doing. It will list the child processes that are
currently active, and tell you what resource each of them is
serving, to whom, and from what virtual host the resources are
coming. (Where “to whom” means, usually, what IP address.)”