Added one more test case

my %tests = (
   split    => q{ my @a = split //, $buf;             },
   regex    => q{ my @a = $buf =~ /./sg;              },
   unpack_C => q{ my @a = map chr, unpack 'C*', $buf; },
   unpack_a => q{ my @a = unpack '(a)*', $buf;        },
   rev_chop => q{ my @a = reverse map chop($buf), 1..length($buf); },
   chop => q{ my @a; $a[ $_ ] = chop $buffer for length($buffer) .. 0;
+ },
);
[download]

And result was

            Rate rev_chop unpack_C    split    regex unpack_a     chop
rev_chop  17.6/s       --      -6%     -13%     -20%     -30%    -100%
unpack_C  18.7/s       6%       --      -7%     -15%     -25%    -100%
split     20.2/s      15%       8%       --      -8%     -20%    -100%
regex     22.0/s      25%      17%       9%       --     -13%    -100%
unpack_a  25.1/s      43%      34%      24%      14%       --    -100%
chop     68478/s  388556%  365714%  339175%  311691%  272542%       --
[download]

However I am yet to read "Benchmark" so someone please explain this output. :) UPDATE: Sorry! That was a silly mistake. Thanks almut.

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.