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Time to xfer


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Just to confirm my calculations:

 

How much time would it take to transfer a 5Meg file over a 768kbit connection?

 

Do not consider tcp/ip overhead, etc. Assumse it is a pure connection with no issues.

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first: kbs = (5*1024 / 768)

 

then: harware = (prossor speed*bus speed*memory speed/60)/100)

 

making kbs +hardware.....

 

 

screw it i got nothing all matters on quality of lines routers, route of packets, isp server, nic settings, software/os running and distance so 2-4 min estimate cuase its not a perfect world

 

damn that OSI model

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well in easy terms

 

(5*1024)/768 = 6.67 seconds in pure transfer

 

if connection is a steady 768kbs but the ussual speeds ive seen on the net of about 128kbs without prosess time still 40 seconds of pure data transfer but adding one second per 256kb for encapulation and processing and decapslution and assembly, and other steps of the osi model still 1 min of transfer time and also ping time witch is inseffect for error checking (lost ,bad a damaged packets) every 10 ping 1 second per (a freaking number i cant rember)mb id say 1:10 on lan 1:20 across ny, 1:40 across the us and 2:10 from asia if downloading from wny

 

6:45 if eather computer goes down cause of user error

 

 

and if any of you call this a bluff i agree, but its a good one :o

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The file size is in bytes, the connection speed is in bits

 

1 byte = 8 bits

 

so you'll have to add that to your calculation

 

time = filesize/speed (you had this part correct!!)

 

where:

time = seconds

filesize = kbits

speed = kb per second

 

I'll have to dig my sheet back out, but I came up with roughly 54 seconds.

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