Hi all For those of you who have struggled with various Devel::*Prof modules, I thought I'd let you know about Devel::NYTProf version 2, which was recently released.
Released by Tim Bunce (of DBI fame), this profiler is a major step forward. It: - profiles your code by line, sub or block - provides exclusive and inclusive times (eg the time spent in the code in THIS sub, vs the time spent in the code CALLED BY this sub) - calculates accurate times - produces an easy to understand HTML report, with issues highlighted - works in mod_perl - flawlessly! You can see: - an example : http://blog.timbunce.org/2008/07/15/nytprof-v2-a-major-advance-in-perl-profilers/ - the background story : http://blog.timbunce.org/2008/07/16/nytprof-v2-the-background-story/ - the module itself : http://search.cpan.org/~timb/Devel-NYTProf-2.01/lib/Devel/NYTProf.pm Using it in mod_perl is as easy as adding this to your httpd.conf (before you load any other Perl modules): PerlModule Devel::NYTProf::Apache It is worth starting apache in single process mode otherwise it writes to multiple log files: apachectl -X Once you've finished using your code (in order to generate stats), you can generate the reports with: nytprofhtml -f /tmp/nytprof.$PID.out If you've got your Perl modules in some directory other than the compiled in @INC, you can use: nytprofhtml -f /tmp/nytprof.$PID.out -lib /path/to/libs I use a framework which autogenerates a number of classes, so I had to edit nytprofhtml to add a few lines in order to initialise my framework before running the report. Try this out - it is super easy, and very very useful many thanks to the authors Clint
