use strict;
use warnings;

use MCE::Loop chunk_size => 1, max_workers => 8;

my @servers = ('a'..'z');
my $timeout = 10;
my $user    = "foo";
my $file    = "/tmp/hello.txt";
my $rpath   = "/tmp";
my $fname   = "hello.txt";

mce_loop {
  my $server = $_;
  MCE->say("child process running, with a key of $server ($$)");
  eval {
     local $SIG{ALRM} = sub { alarm 0; die "alarm\n" };
     alarm $timeout;
     my $rc = system("scp -p $file $user\@$server:$rpath/$fname");
  };
  alarm 0;
} @servers;