C:\test>dir 1123355.bin
14/04/2015  16:50        16,777,216 1123355.bin

C:\test>1159245 1123355.bin
Took 12.897612 secs

##</code><code>##

C:\test>1159245 1123355.bin
Took 3.832763 secs
  : 3762666
&#9786; : 46120
&#9787; : 43642
&#9829; : 44106
&#9830; : 43878
...

##</code><code>##

#! perl -slw
use strict;
use Time::HiRes qw[ time ];

my $start = time;

open I, '<:raw', $ARGV[ 0 ];

my @seen;

while( read( I, my $buf, 16384  ) ) {
    ++$seen[$_] for unpack 'C*', $buf;
}
printf "Took %f secs\n", time() - $start;

printf "%c : %u\n", $_, $seen[$_] for 0 .. 255;