| =head1 NAME |
| |
| stopwatch - benchmark mod_perl vs. CGI with File::CounterFile |
| |
| =head1 DESCRIPTION |
| |
| I have a stopwatch here. It consists of a CGI program that must be |
| installed so that it can be accessed both as Apache::Registry routine |
| and as CGI program. The program assumes that the environment variable |
| SCRIPT_FILENAME is set and writes different counterfiles for the two |
| access methods. On the client side I use LWP. Here's the CGI program: |
| |
| #!/usr/bin/perl |
| |
| use CGI::Switch; |
| use File::CounterFile; # part of LWP |
| my $q = new CGI::Switch; |
| $q->print( |
| $q->header, |
| $q->start_html(), |
| $q->start_form(), |
| $q->textfield(-name => "textfield"), |
| $q->submit(), |
| $q->end_form, |
| "<p>textfield = ", $q->param("textfield"), |
| ); |
| |
| my $cfile = |
| $ENV{SCRIPT_FILENAME} =~ m{/perl/} ? "C-apache" : "C-cgi"; |
| |
| my $c = File::CounterFile->new($cfile,"00000000"); |
| my $id = $c->inc; |
| |
| $q->print( |
| "<H4>", scalar(localtime()),"</H4>\n", |
| sprintf("Accessed %d times (%d)\n",$id,$$), |
| $q->end_html, |
| ); |
| |
| |
| And here is how I access it: |
| |
| perl -MLWP::UserAgent -MURI::URL -e ' |
| $ua = new LWP::UserAgent; |
| $curl = url("http:"); |
| $curl->query_form(textfield => 12345); |
| $req = new HTTP::Request "POST", "http://localhost/perl/forbench"; |
| # ^^^^^^^^^^^^^ |
| # change that |
| $req->content_type("application/x-www-form-urlencoded"); |
| $req->content($curl->equery); |
| printf "%s\n", $1 |
| while $ua->request($req)->as_string =~ /(Ac.*)/m; |
| ' |
| |
| I have this program run in one window for /perl/forbench and in |
| another window for /cgi-bin/forbench. While I'm typing this, the two |
| counters have reached the numbers 5215 and 141. A speed advantage of |
| 37:1 on my Linux box. When I try this on my Indy I get a relation of |
| 20:1. The advantage seems to be system dependent. |
| |
| =head1 AUTHOR |
| |
| Andreas J. Koenig <k@anna.in-berlin.de> |
| |
| |
