or download this
$cron->add_entry("* * * * * 0-50/10", \&subroutine_name_0, $param1, $p
+aram2, $param3, $param4, $param5, $param6, $param7, $param8, $param9)
+;
$cron->add_entry("* * * * * 1-51/10", \&subroutine_name_1, $param1, $p
+aram2, $param3, $param4, $param5, $param6, $param7, $param8, $param9)
+;
...
$cron->add_entry("* * * * * 6-56/10", \&subroutine_name_6, $param1, $p
+aram2, $param3, $param4, $param5, $param6, $param7, $param8, $param9)
+;
$cron->add_entry("* * * * * 7-57/10", \&subroutine_name_7, $param1, $p
+aram2, $param3, $param4, $param5, $param6, $param7, $param8, $param9)
+;
$cron->add_entry("* * * * * 8-58/10", \&subroutine_name_8, $param1, $p
+aram2, $param3, $param4, $param5, $param6, $param7, $param8, $param9)
+;