Hi. I had to find out that there are obviously many bugs, or better said missing things in the Module sections and "Links" of the MPMs. 1) http://httpd.apache.org/docs/2.2/mod/mpm_common.html e.g. AcceptMutex, User and Group do not list event. 2) There might be also missing things in the "Directives" box of the actual MPM documentation sites, e.g http://httpd.apache.org/docs/2.2/mod/event.html might be missing ChrootDir. 3) I'd generally suggest to really put only those Directives in the mpm_common documentation, which really have to be supported by ALL MPMs,... currently this is not the case as many Thread/Process related directives are described there, too. They should all go to the respecive MPM documentation. Cheers, Chris. regardin 1) and 2)... unfortunately I could not give a definite list here, as I don't know which directives are really supported (and not just ignored) by which MPM.
On example which I guess is missing (in all the mentioned places): I would assume, that event also supports "ReceiveBufferSize",.. but it is not listed.
This has been fixed in trunk and 2.4.