Switching from Perl to Python: Speed
A real time comparison. Long live Perl.
http://silicainsilico.wordpress.com/2012/03/26/switching-from-perl-to-python-speed/
Update:
Adding another comparison between various programming languages including Perl. This is bit old post but still relevant.
http://tenser.typepad.com/tenser_said_the_tensor/2006/08/python_vs_perl_.html
Don’t forget to read comments.