Sample TAP-ready file:

#!/bin/env perl

# Test script for RT 75254
# URL: http://rt.perl.org/rt3/Public/Bug/Display.html?id=75254
# URL: http://www.perlmonks.org/?node_id=841116

use strict;
use warnings;
use Time::HiRes qw(time);
use Test::More;

use Scalar::Util qw(weaken);

# The ratio of time with weaken vs without for which we test.  What is
# the performance target?
my @timefactors = reverse ( 1.5, 2, 5, 10, 25, 50, 100 );

plan tests => 5 + scalar(@timefactors);

my @data = (1, 2, 3);

pass("Begin performance test for weaken(): this may take a while.");

# Record the time without using weaken()
my $withouttime;
{
    my $endtime   = &withoutweaken();
    my $stoptime  = time;
    $withouttime  = $stoptime - $endtime;
}
pass(sprintf("Time without weaken(): %.2f", $withouttime));

# Record the time using weaken()
my $withtime;
{
    my $endtime   = &withweaken();
    my $stoptime  = time;
    $withtime     = $stoptime - $endtime;
}
pass(sprintf("Time with weaken(): %.2f", $withtime));

my $timeratio = ($withtime / $withouttime);
pass(sprintf( "Time Ratio: TIME(with) / TIME(without): %.2f", $timerat
+io ));

foreach ( @timefactors ) {
  ok( $timeratio < $_, "Time ratio is < $_" );
}

pass("End performance test for weaken().");

sub withweaken {
    my @h; for (1 .. 200000) {
        my %hash = (data => \@data);
        weaken($hash{data});
        push @h, \%hash;
    }
    return time;
}

sub withoutweaken {
    my @h; for (1 .. 200000) {
        my %hash = (data => \@data);
        push @h, \%hash;
    }
    return time;
}
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.