apache server-status connection/child/slot explanation

Question

In apache server-status page,referring to the "Acc" column, which is the "Number of accesses this connection / this child / this slot".

For example 18/256/356, I will expect that all values are equal.

I need an explanation of what is meant by child and slot connection with examples.

Answer 1

From this mailing list archive, we can give the following definitions :

• A child is a process or a thread that handles requests.

• A slot is a placeholder for a child. There may or may not be a child there depending on max/min spare servers.

• A connection is a link between a client and a child which resides in a slot.