[RFC] Benchmarking CGI.pm and Apache::Request

[Stas Bekman <sb...@stason.org>]

=head1 Benchmarking CGI.pm and Apache::Request

Let's write two registry scripts that use C<CGI.pm> and
C<Apache::Request> to process the form's input and print it out.

  benchmarks/cgi_pm.pl
  --------------------
  use strict;
  use CGI;
  my $q = new CGI;
  print $q->header('text/plain');
  print join "\n", map {"$_ => ".$q->param($_) } $q->param;

  benchmarks/apache_request.pl
  ----------------------------
  use strict;
  use Apache::Request ();
  my $r = Apache->request;
  my $q = Apache::Request->new($r);
  $r->send_http_header('text/plain');
  print join "\n", map {"$_ => ".$q->param($_) } $q->param;


Now let's benchmark the two:

  % ab -n 1000 -c 10 \

'http://localhost/perl/benchmarks/cgi_pm.pl?a=b&c=+k+d+d+f&d=asf&as=+1+2+3+4'

  Time taken for tests:   57.112 seconds
  Requests per second:    17.51
  
  Connnection Times (ms)
                min   avg   max
  Connect:        0     6   319
  Processing:   191   561  4563
  Total:        191   567  4882

  % ab -n 1000 -c 10 \

'http://localhost/perl/benchmarks/apache_request.pl?a=b&c=+k+d+d+f&d=asf&as=+1+2+3+4'
  
  Time taken for tests:   23.662 seconds
  Requests per second:    42.26
  
  Connnection Times (ms)
                min   avg   max
  Connect:        0     3   263
  Processing:   152   232   597
  Total:        152   235   860

Apparently the latter script using C<Apache::Request> is more than
twice and a half faster.

Again this benchmark shows that the real timing of the input
processing, when the script is much heavier the overhead of using
C<CGI.pm> can be insignificant.





______________________________________________________________________
Stas Bekman             | JAm_pH    --    Just Another mod_perl Hacker
http://stason.org/      | mod_perl Guide  http://perl.apache.org/guide 
mailto:stas@stason.org  | http://perl.org    http://stason.org/TULARC/
http://singlesheaven.com| http://perlmonth.com http://sourcegarden.org
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