If you need to know the time at which the
request started, you can either install
PerlPostReadRequestHandler, which adjusts the
special Perl variable $^T to store that time:
$^T = time( );
and subsequently use that variable in the code, or you can use
$r->request_time, which stores the exact
request's start time and saves the extra system call
to time( ).
13.7. Using the Perl stat( ) Call's Cached Results
