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NAME Devel::Timer - Track and report execution time for parts of code SYNOPSIS use Devel::Timer; my $t = Devel::Timer->new(); $t->mark('first db query'); ## do some work $t->mark('second db query'); ## do some more work $t->mark('end of second db query'); $t->report(); DESCRIPTION Devel::Timer allows developers to accurately time how long a specific piece of code takes to execute. This can be helpful in locating the slowest parts of an existing application. First, the Devel::Timer module is used and instantiated. use Devel::Timer; my $t = Devel::Timer->new(); Second, markers are placed before and after pieces of code that need to be timed. For this example, we are profiling the methods get_user_score() and get_average_user_score(). $t->mark('first db query'); &get_user_score($user); $t->mark('second db query'); &get_average_user_score(); Finally, at the end of the code that you want to profile, and end marker is place, and a report is generated on stderr. $t->mark('END'); $t->report(); Sample report: Devel::Timer Report -- Total time: 0.3464 secs Interval Time Percent ---------------------------------------------- 02 -> 03 0.3001 86.63% second db query -> END 01 -> 02 0.0461 13.30% first db query -> second db query 00 -> 01 0.0002 0.07% INIT -> first db query The report is output using the method Devel::Timer::print() which currently just prints to stderr. If you want to send the output to a custom location you can override the print() method. The initialize() and shutdown() methods can also overridden if you want to open and close log files or database connections. INSTALLATION To install this module, run the following commands: perl Makefile.PL make make test make install COPYRIGHT Jason Moore This is free software. It is licensed under the same terms as Perl itself. AUTHOR Author: Jason Moore - firstname.lastname@example.org (no longer valid) Maintainer: Gabor Szabo - email@example.com Contributor: Jay Hannah - firstname.lastname@example.org