Here's a skeleton from something I've used successfully for dealing with large numbers of processes by forking a limited number in parallel. 

# UNTESTED
# @srvrs is potentially LARGE array of servers to test
# $frk is maximum number of processes to fork at one time.

while ( @srvrs )
{
   SRVR:   
   for (1..$frk)
   {
       $x = shift @srvrs or last SRVR;

       $pid = fork; 
       if ( $pid )
       {       
            push @pids, $pid
       }       
       elsif ( defined $pid )
       {       
            # DO thing with $x you want parallelized  (testing servers
+) here
            exit;   
       }       
       else                                                           
+                                                                
       {
           die "fork failed\n";
       }       
   }

   waitpid($_, 0) for ( @pids );
}

[download]

--Bob Niederman, http://bob-n.com

In reply to Re: Forking Issues by bobn
in thread Forking Issues by satanklawz

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