A little while back I wrote a pair of applications that used Path::Class::Rule to do the file finding. I selected this module because I like the interface for building up rules. I started to run into speed issues as the source directory grew larger and larger. Along comes rjbs's the speed of Perl file finders article and his speed chart backs up my findings that more files equals a marked increase in time.

This is where I found out about ="https://metacpan.org/mod…