Perl is very fast once it starts up. You'll have to test it to know for sure, but I wouldn't expect a problem.

You could probably simulate this without setting up any new hardware by passing data between two loopback interfaces on your system, for example 127.0.0.1 and 127.0.0.2, or by just reading the data and echoing it back out the same interface. If it's fast enough for that, your real application shouldn't be a problem.