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How many retransmissions are considered to be bad

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Hello, my cuestions is if I have captured 2000 packets and I have retransmissions, how many retransmissions percent is considered to be a problem? Thanks

asked 02 Sep '13, 10:36

ogoname's gravatar image

ogoname
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One Answer:

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It depends on how much they hurt you or the people using the network. As a simple way to determine the "cost" of the retransmission you see, you should find out how long the communications need to recover from packet loss.

This is usually determined by finding the packet where the retransmission should have been if it hadn't been lost, and measuring the time until the retransmitted packet arrived. Add all the delays for the connection and ask yourself if the user would notice. My rule of thumb is: everything above a two digit number of millisecond can be noticed. If your total delay goes into seconds, you're in trouble in many cases.

If you still need a percentage I'd say you should stay well below 10% in the ratio of retransmission to packets.

answered 02 Sep '13, 11:33

Jasper's gravatar image

Jasper ♦♦
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Thank you, very much. Regards

(02 Sep '13, 11:38) ogoname