What's the best method for benchmarking the performance of my various templates when using Template::Toolkit?
I want something that will break down how much cpu/system time is spent processing each block or template file, exclusive of the time spent processing other templates within. Devel::DProf, for example, is useless for this, since it simply tells me how much time is spent in the various internal methods of the Template module.
It turns out that Googling for template::toolkit profiling yields the best result, an article from November 2005 by Randal Schwartz. I can't copy and paste any of the article here due to copyright, but suffice to say that you simply get his source and use it as a module after template, like so:
use Template;
use My::Template::Context;
And you'll get output like this to STDERR when your script runs:
-- info.html at Thu Nov 13 09:33:26 2008: cnt clk user sys cuser csys template 1 0 0.06 0.00 0.00 0.00 actions.html 1 0 0.00 0.00 0.00 0.00 banner.html 1 0 0.00 0.00 0.00 0.00 common_javascript.html 1 0 0.01 0.00 0.00 0.00 datetime.html 1 0 0.01 0.00 0.00 0.00 diag.html 3 0 0.02 0.00 0.00 0.00 field_table 1 0 0.00 0.00 0.00 0.00 header.html 1 0 0.01 0.00 0.00 0.00 info.html 1 0 0.01 0.01 0.00 0.00 my_checklists.html 1 0 0.00 0.00 0.00 0.00 my_javascript.html 1 0 0.00 0.00 0.00 0.00 qualifier.html 52 0 0.30 0.00 0.00 0.00 referral_options 1 0 0.01 0.00 0.00 0.00 relationship_block 1 0 0.00 0.00 0.00 0.00 set_bgcolor.html 1 0 0.00 0.00 0.00 0.00 shared_javascript.html 2 0 0.00 0.00 0.00 0.00 table_block 1 0 0.03 0.00 0.00 0.00 ticket.html 1 0 0.08 0.00 0.00 0.00 ticket_actions.html -- end
Note that blocks as well as separate files are listed.
This is, IMHO, much more useful than the CPAN module Template::Timer.