Network Latency

Amount of time required to transfer a bit of data from one point to another

Delay of transfer

How up to date is the information

Reasons for network latency

• speed of light delays (~ 10 ms of delay per time zone)

  • light trough fibre : 200 k km/s, 44 835 km / 24 = 1 868 km => 9,34 ms

• delays from the computers themselves

  • software (OS) and network Hardware

• delays from the network : the routers (gateway) work

  • ethernet to the LAN : 10 ms

  • modem on phone system : 100 ms

  • transcontinental transfers + 60-150 ms

  • intercontinental latencies + 250-500 ms

   

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