G'day almr,

I made verbatim copies of your four scripts and ran them using time (I don't have hyperfine). I performed multiple runs on each; I got results that were of the same order of magnitude as yours. So, there's nothing problematic with your system in this regard.

I see some workarounds have been suggested. I use the three modules you tested in most of my $work scripts; I've never had any comments about slowness. I don't imagine any of your users will complain that a script took 100ms to start running. :-)

You'll no doubt be loading additional modules which will increase the startup time. Keep an eye on what you're importing. 

# Import nothing -- fastest but requires additional coding
use Some::Module ();
...
Some::Module::some_function();
Some::Module::other_function();

# Import just the parts you intend to use -- still fast; less coding
use Some::Module qw{some_function other_function};
...
some_function();
other_function();

# Import everything -- could be very slow
use Some::Module;
...
any_function();

[download]

If you're really concerned about startup speeds, put something like this at the start of your script: 

BEGIN { print "Loading app (could take a second or two) ...\n"; }

[download]

Then, when it only takes 100ms or so, your users should be very pleased.

— Ken

In reply to Re: slow startup for some common modules? (autodie, Pod::Usage, Getopt::Long)) by kcott
in thread slow startup for some common modules? (autodie, Pod::Usage, Getopt::Long)) by almr

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