Execute 3 external server scripts at once

[Newbee21369]

I was wanting to execute no more than 3 external scripts simultanously.. would it be best to use the fork or the system command?

Thanks!

 

[tchatzi]

If you start scripts with "system" then the second script starts when the first finishes, and the third starts when the second finishes.
With "fork" all three scripts will start at the very same second.


``The wise man doesn't give the right answers,
he poses the right questions.''
TIMTOWTDI

 

[mlibeson]

Fork is the correct way to go.

Here is some code another user posted when somebody else was having problems with fork.

use strict;
use warnings;

use Parallel::ForkManager;


my @sleepy_times=(3,5,2,8,1,6,4,7,9,10);

my $pm = new Parallel::ForkManager(10);

foreach my $sleepy_time (@sleepy_times) {

$pm->start and next; # do the fork

print "sleeping for $sleepy_time seconds\n"; 
sleep $sleepy_time;
print "done ($sleepy_time)\n";

$pm->finish; # do the exit in the child process

}

$pm->wait_all_children;

Michael Libeson