I'm not really a fan of re-blogging stuff, but I found this so staggeringly stupefying that I felt the need to post it here.
Redhat Perl, What A Tragedy
We run a variety of Perl scripts on our production systems here. A quick test using the script from the article shows that a basic loop calling bless 50,000 times takes 0.16 seconds on my Ubuntu workstation. Meanwhile, our uber-powerful production server, which runs a Redhat derivative, takes over four seconds to run the script. Our development server, running the same OS on slightly less powerful hardware took 24 seconds.
To summarize, if you run CentOS or Fedora, and you use Perl in production, you may have a problem.