Algorithm 1 Dynamic QoS Algorithm.

Input: current queue query in SQL table 1:if queue entry does not exist in SQL table then 2:    if queue entry does not exist on switches then 3:        do nothing 4:    else 5:        delete proactive flows on switches 6:        delete queues on switches 7:    end if 8:else 9:    if queue entry does not exist on switches then 10:        add queues on switches 11:        add proactive flows on switches 12:    else 13:        if current query result ≠ previous query result then 14:           modify queues on switches 15:        end if 16:    end if 17:end if