Identify slow code with Devel::Timer Aug 17, 2016 by David Farrell development devel-timer benchmark refactor optimize speed How timing statements can help you pinpoint bottlenecks Read it
The road to a 55x speedup with XS Jun 14, 2016 by David Farrell development xs c uri_encode_xs uri_escape percent_encoding optimization benchmark The power of C with the pleasure of Perl Read it