Devel::FileProfiler - quick & easy per-file statistical profiler
use Devel::FileProfile;
Devel::FileProfile is a very simple statistical profiler. Unlike the Devel::Profile manpage, it will not slow down the execution of your program and it will not take forever to generate the profile results.
On the other hand, the profile results are not nearly as detailed.
To use it, just use Devel::FileProfile in any file you want
profiled. When your program is done executing, it will dump a
partial code-listing to STDERR with the percentage of time
spent on each line annotated. It does statistical sampling so
most lines won't be listed.
The output format is:
%%% line# code
For each line listed, several lines of the surrounding code are shown to provide context.
There are many improvements that could be made to this module. Feel free to make them and send a patch to the author. The module meets the author's needs as is. The code is very very simple.
Devel::FileProfile uses $SIG{ALRM}. It is not currently
compatabile with any other uses of $SIG{ALRM}. It potentially
could know about things like the Event manpage and use them but it does
not currently do that.
Copyright (C) 2007, David Muir Sharnoff <muir@idiom.com> This module may be used and copied on the same terms as Perl itself.