C:\Users\perluser09\Desktop\Perl>perl lock.pl 
...
Thread 1: Doing SNMP GET for 2.1.1.1:1.3.1.8.47
Thread 1: Doing SNMP GET for 2.1.1.1:1.3.1.8.46
Thread 1: Doing SNMP GET for 2.1.1.1:1.3.1.8.45
Thread 2: Doing SNMP GET for 2.1.1.1:1.3.1.8.40
Thread 1: Doing SNMP GET for 2.1.1.1:1.3.1.8.44
Thread 2: Doing SNMP GET for 2.1.1.1:1.3.1.8.39
Thread 2: Doing SNMP GET for 2.1.1.1:1.3.1.8.38
Thread 1: Doing SNMP GET for 2.1.1.1:1.3.1.8.43
.....
Perl exited with active threads
        0 running and unjoined
        2 finished and unjoined
        0 running and detached