Just brainstorming..... I'm not running windows, but I don't see how you can expect timing to be reliable, when you are creating an object, and connecting to the internet in the threads. Can you come up with an example that dosn't use Net::SNMP? Maybe you could create the threads first, wait for them both to return a "ready" signal through a shared variable, then "fire the starting pistol" and determine timings.

But I may not really understand your question. :-)