Abbreviated "MPM."

Official Documentation

Responsibilities:

• binding network ports

• accepting requests

• dispatching children to handle requests

One and only one must be loaded into the server at any given time. The MPM is compiled into the server.

To find out what MPM module is loaded, execute:

  httpd -l

Some MPMs:

• http://httpd.apache.org/docs-2.0/mod/prefork.html prefork - default for Unix - non-threaded, uses spare servers

• http://httpd.apache.org/docs-2.0/mod/worker.html worker - threaded and pre-forked

• http://httpd.apache.org/docs-2.0/mod/perchild.html perchild - threaded and pre-forked, balances threading among children

• mpm_winnt, mpmt_os2, mpm_netware, beos - other systems