I didn't see a join() anywhere in your app (which may explain your ability to get a result w/ sleep 1). After you spawn your threads, you need to explicitly wait for them all to complete via: 
$thr->join();
$thr2->join();
...etc...

[download]
Otherwise the main thread will just exit, which may cause the child threads to get prematurely killed.

In reply to Re^3: threads and SNMP Session by renodino
in thread threads and SNMP Session by Otogi

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