In reply to rupeshblr:
Reading this code does not really help to identify a weakness.
But you are wasting your resources in terms of memory space by writing data to queues. This will slowdown your simulation. You should do a on-the-fly checking of your packet data.
You could store your write data in an associative array in the sequence. This allows data to be stored in a non-contigious way. When reading your data you can pass back the read data as a response to your sequence and compare with the data in the assoc. array.