fanf 00/01/11 17:18:09
Modified: htdocs/manual/mod core.html Log: Be more explicit about the performance of UseCanonicalName DNS after the scoreboard change. Revision Changes Path 1.160 +3 -0 apache-1.3/htdocs/manual/mod/core.html Index: core.html =================================================================== RCS file: /home/cvs/apache-1.3/htdocs/manual/mod/core.html,v retrieving revision 1.159 retrieving revision 1.160 diff -u -r1.159 -r1.160 --- core.html 1999/12/21 07:52:51 1.159 +++ core.html 2000/01/12 01:18:07 1.160 @@ -3144,6 +3144,9 @@ ancient clients that do not provide a <CODE>Host:</CODE> header. With this option Apache does a reverse DNS lookup on the server IP address that the client connected to in order to work out self-referential URLs. +This can have adverse performance implications, especially if you use +<CODE>%V</CODE> in a <A HREF="mod_log_config.html#customlog">CustomLog</A> +directive or have <A HREF="mod_status.html">ExtendedStatus</A> on. <P><STRONG>Warning:</STRONG> if CGIs make assumptions about the values of <CODE>SERVER_NAME</CODE> they may be broken by this option. The client
