Simple Web benchmark with Perl or faking web login with Perl

Sometimes it is not necessary to start Apache's jmeter or selenium for benchmarking a web site.
But one difficulty remains: Authentification.

What else is needed by common frameworks?
- HTTPS
- Cookies

• Package libwww-perl (perl-libwww-perl-5.805-1.1.1.noarch or perl-libwww-perl)
  
• Package HTTP

For details have a look at CPAN

Perl helps out with a few lines. Furthermore this also one way for automating web login to gain a valid session. This valid Session (or rather the Cookie) will be stored in the variable "$browser".

#!/usr/bin/perl
use LWP;
use Data::Dumper;
use HTTP::Cookies;
use Time::HiRes qw( time );

my $browser = LWP::UserAgent->new;
my $cookie_jar = HTTP::Cookies->new();
$browser->cookie_jar($cookie_jar);

my $loggedinPage = $browser->post(
  'https://cv-parser.de/',
  ['username'=>'user', 'password' => 'password' ]
);
my $start = time();
print 'Header: '.  Dumper($loggedinPage->{'_headers'})."\n";
my $end = time();
printf("Login: %.2f\n", $end - $start);

The only difficult part, is to evaluate the form parameter which the original site uses.
At this point Firebug or Chrome development bar is your friend.

sysbench - create high system load

SysBench- the system benchmark is the utility for creating high load on a machine.

So for example with this parameters:
sysbench --max-time=86400 --num-threads=4096 --max-requests=1000000 --thread-stack-size=512 --init-rng=on --validate=on --test=fileio --file-total-size=1024M --file-test-mode=rndwr run you can get a load about 4000, very impressive. So if you ever searched some tool for creating a lot of stress, this one your friend.
See this:
top - 16:26:35 up 1 day, 19 min, 3 users, load average: 7361.45, 7355.47, 735

BTW, the machine was a single processor Intel P4 3.6 GHz with 3GB DDR ECC RAM and Maxtor IDE drive.

(If you ever wanted to know, what the load of a linux system stands for, this link explains it).