Using Storable is problematic, because it's not guaranteed that semantically equivalent data is serialized in the same way. Here's an example playing with the internal utf-8 flag --- while Test::More's is_deeply and Data::Compare get it right, checking the serialized Storable data fails: 
#!/usr/bin/perl

use Data::Compare qw();
use Storable qw(nfreeze);
use Test::More qw(no_plan);

my $data1 = ["f\xfcbar"];
my $data2 = [substr("f\xfcbar\x{0100}", 0, -1)];

is_deeply($data1, $data2, "is_deeply test");
ok(Data::Compare::Compare($data1, $data2), "Data::Compare");
ok(nfreeze($data1) eq nfreeze($data2), "storable serialized");

[download]
I just benchmarked Test::More::is_deeply vs. Data::Compare and found that the latter is 3x faster for a data set which size is ~6MB as a storable-serialized file. This probably depends on the structure of the data set.

In reply to Re: Fastest data structure compare? by eserte
in thread Fastest data structure compare? by swartz

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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! —
  • 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:
    & &amp;
    < &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.