Joseph W. Doherty Fri, 12/12/2008 - 16:08

For TCP traffic, the queue depth is too small for initial slow start, or queue depth is much too large. (For optimal TCP, queue should be sized for link's BDP [bandwidth delay product].)

For TCP it's also possible when using single FIFO queue to have multiple flows enter global synchronization. (See

For non-TCP, insufficient bandwidth to support it or queue depth is too small for bursty traffic. (Much non-TCP traffic does not dynamically adjust its flow rate when there's congestion discards.)


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