Devel::NYTProf is a powerful feature-rich perl source code profiler.
For more information see:
http://www.slideshare.net/Tim.Bunce/develnytprof-v4-at-yapceu-201008-4906467
http://blog.timbunce.org/tag/nytprof/
Download a release from CPAN using your favorite tool, such as cpanm. Or else from https://metacpan.org/release/Devel-NYTProf and then unpack the tar.gz file.
You're most welcome to contribute, in which case cloning or forking the git repo is a good place to start.
To build and install, just incant the typical mantra:
perl Makefile.PL
make
make test
make install