C:\>type load.pl
my ($start, $end, $cgitime, $simpletime);
my $n = 200;

$start = time;
do{require CGI; undef %INC} for 1..$n;
$end = time;
$cgitime = $end - $start;
print "Loading CGI $n times takes $cgitime seconds\n";

$start = time;
do{require CGI::Simple; undef %INC} for 1..$n;
$end = time;
$simpletime = $end - $start;
print "Loading CGI::Simple $n times takes $simpletime seconds\n";

C:\>perl load.pl
Loading CGI 200 times takes 15 seconds
Loading CGI::Simple 200 times takes 10 seconds

C:\>

C:\>type extract.pl
use Benchmark;
use CGI qw/:cgi /;
use CGI::Simple;
$ENV{'QUERY_STRING'} = 'foo=bar&baz=boo';
timethese(100000, { 'CGI'    => '$q = new CGI; $q->param("baz")',
                   'Simple' => '$s = new CGI::Simple; $s->param("baz")'});

timethese(100000, { 'CGI'    => '$q = new CGI; $q->param("baz") for 1..10',
                   'Simple' => '$s = new CGI::Simple; $s->param("baz") for 1..10
'});
C:\>perl extract.pl
Benchmark: timing 100000 iterations of CGI, Simple...
       CGI: 21 wallclock secs (21.09 usr +  0.00 sys = 21.09 CPU) @ 4740.46/s (n
=100000)
    Simple: 11 wallclock secs (10.88 usr +  0.00 sys = 10.88 CPU) @ 9195.40/s (n
=100000)
Benchmark: timing 100000 iterations of CGI, Simple...
       CGI: 32 wallclock secs (31.98 usr +  0.00 sys = 31.98 CPU) @ 3126.56/s (n
=100000)
    Simple: 15 wallclock secs (14.91 usr +  0.00 sys = 14.91 CPU) @ 6708.71/s (n
=100000)

C:\>

C:\>type load-extract.pl
use Benchmark;

$ENV{'QUERY_STRING'} = 'foo=bar&baz=boo';

$cgi_code = <<'CODE';
%INC = ('Benchmark.pm' => 'C:/Perl/lib/Benchmark.pm');
require CGI;
$q = new CGI;
$q->param("baz") for 1..10;
CODE

$simp_code = <<'CODE';
%INC = ('Benchmark.pm' => 'C:/Perl/lib/Benchmark.pm');
require CGI::Simple;
$q = new CGI::Simple;
$q->param("baz") for 1..10;
CODE

timethese(500, { 'CGI' => $cgi_code, 'Simple' => $simp_code });
C:\>perl load-extract.pl
Benchmark: timing 500 iterations of CGI, Simple...
       CGI: 39 wallclock secs (35.02 usr +  3.47 sys = 38.49 CPU) @ 12.99/s (n=
00)
    Simple: 25 wallclock secs (21.88 usr +  2.72 sys = 24.59 CPU) @ 20.33/s (n=
00)

C:\>