use Time::HiRes qw(gettimeofday);

 :
 :

 my $prep_start = gettimeofday ;
 $conn = new Net::HTTP( 'Host'=>"$url") || goto END_LOOP;
 my $prep_end = gettimeofday;

 # - - - - -  Start - - - - - -
 my $start = gettimeofday ;
 $rtn = $conn->write_request(GET => "/", 'User-Agent' => "perlworks/1.0") || goto END_LOOP;;

 my ($code, $mess, %h) = $conn->read_response_headers();
 $data{'page_size'} = $conn->read_entity_body($page, 512);
 my $end = gettimeofday;
 # - - - - -  Stop  - - - - - -

 :
 :

 my $delta = $end - $start;