1 worker:   9.437 secs.
 2 workers:  4.480 secs.
 3 workers:  3.248 secs.
 4 workers:  3.236 secs.
 8 workers:  3.240 secs.


##</code><code>##

mce_flow_f {
   chunk_size => '24m', max_workers => 1,
   use_slurpio => 1,
},
sub {

}, 'Dictionary2GB.txt';


##</code><code>##

use strict;
use warnings;

my $size = 24 * 1024 * 1024;

open my $fh, '<', 'Dictionary2GB.txt' or die "$!";

while ( read( $fh, my $b, $size ) ) {
   $b .= <$fh>;
}

close $fh;