basic throughput calculations

Answered Question

Hi all,


I am doing some basic calculations for time it should take to transfer a file over my network. apparently its been a while since I had to do math as I am doubting myself!


I just wondered how long it would take to transfer my 90GB file over a network connection that I knew to be 800Mbps.


So I did the following:


1Mbps = .125MBps


800Mbps * .125MBps = 100MBps


So thats 100 meg a second correct?


1000Mb = 1GB

90000MB = 90GB


at that rate it should take roughly 900 seconds to transfer the 90GB file..or 15 minutes. is this right?


TIA,


R

Correct Answer by Joseph W. Doherty about 9 years 10 months ago

Your basic calculations are correct for time to transmit 90GB across 800 Mbps. In practice, due to frame/packet overhead, and how well stack deals with BDP (bandwidth delay product), actual transmission time might be considerably slower than the calculated value.

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Correct Answer
Joseph W. Doherty Fri, 09/21/2007 - 07:20
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Your basic calculations are correct for time to transmit 90GB across 800 Mbps. In practice, due to frame/packet overhead, and how well stack deals with BDP (bandwidth delay product), actual transmission time might be considerably slower than the calculated value.

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