This is my first attempt to process things in parallel with Parallel::ForkManager on a server. I have several subrutines to collect data through APIs. I want to perform it in parallel and then merge the results. This is my script, not elegant of course, but it runs. As I do not see a huge difference in performance (time) in running things in parallel with this script or running the single subrutines one after the other (the script let me save ~1/3 of the time), just wanted to ask for your wisdom about my script

use Parallel::ForkManager;
my $max_procs = 6;
my @names = qw( 0 2 3 4 5 0 );
my @DataStructure;

my $pm = Parallel::ForkManager->new($max_procs, @ARGV);

$pm->run_on_finish( sub {
  my ($pid, $exit_code, $ident, $exit_signal, $core_dump, $data_struct
+ure_reference) = @_;
  
  my @results= @$data_structure_reference;
  
  if (@results){
    push (@DataStructure, @results);
  }
});

foreach my $child ( 0 .. $#names ) {
  my $pid = $pm->start($names[$child]) and next;

    my @results;
    if ($child eq 1){
        @results=getResultsAPI_1();
    }
    elsif ($child eq 2){
        @results=getResultsAPI_2();
    }
    elsif ($child eq 3){
        @results=getResultsAPI_3();
    }
    elsif ($child eq 4){
        @results=getResultsAPI_4();
    }
    elsif ($child eq 5){
        @results=getResultsAPI_5();
    }
    elsif ($child eq 6){
        @results=getResultsAPI_6();
    }

  $pm->finish($child, \@results);
}


$pm->wait_all_children;

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In reply to Parallel::ForkManager right approach by Takamoto

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