Just to simplfy my problem. I have to codes A and B. Code A is much slower than code B, although I should expect the opposite. I am using a i7 2600K CPU. Any comments are appreciated. Thank you!!

Code A 
#!/usr/bin/perl
use Parallel::ForkManager;

@all_strings=('110110101000101111', 
              '110010101001011101', 
              '110110111001001110',
              '110011101001011100',
              '111010101001011100');

my $pm = new Parallel::ForkManager(4);
foreach $string (@all_strings)
{
  my $pid = $pm->start and next;
  print($string,"\n");
  $pm->finish;
}
$pm->wait_all_children;

[download]
Code B 
#!/usr/bin/perl

@all_strings=('110110101000101111', 
              '110010101001011101', 
              '110110111001001110',
              '110011101001011100',
              '111010101001011100');

foreach $string (@all_strings)
{
  print($string,"\n");
}

[download]

In reply to Parallel::ForkManager is time consuming...takes too long by esolkc

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