Is there a Perl profiler?
While there isn't one included with the perl source distribution (yet)
various folks have written packages that allow you to do at least some
sort of profiling. The strategy usually includes modifying the perl
debugger to handle profiling. Authors of these packages include
Wayne Thompson <me@anywhere.EBay.Sun.COM>
Ray Lischner <lisch@sysserver1.mentor.com>
Kresten Krab Thorup <krab@iesd.auc.dk>
The original articles by these folks containing their
profilers are available on convex.com in
/pub/perl/information/profiling.shar via anon ftp.