Wireshark · Wireshark-users: Re: [Wireshark-users] TCP throughput graph question

[Hansang Bae <for_list_hbae@xxxxxxxxxx>]

On 11/26/2010 6:06 AM, Michal Kepien wrote:
> That might be troublesome as I deleted the original file :) If you have
> something specific on your mind, I might try generating a new, similar
> file. I thought the answer to my question is simple and there would be
> no need to share the whole capture (it was too large to send by e-mail
> anyway).

Remember that almost all "computer calculations" for a Kilobyte is 
1024.  In networking, 1 Kilobyte is 1,000 bytes.  So you have to be 
careful about using the term "byte"   FWIW, almost all network people 
use bits/sec as that's what we're used to and there can be no confusion.

Also, you have to account for the various header if you are trying to 
nail down the EXACT throughput (besides the fact that file size reported 
by OS assumes 1024 is 1KB.)   You have to account for PPP header, HDLC 
header, or Ethernet header including preamble and CRC.  *IF* you want 
the most accurate number I mean.

Also, at any given moment, the network is 100% utilized or 0% utilized.  
Either you have a bit on the wire or you don't.  So if you're going to 
average it, you need the appropriate sample size and live with the fact 
that it's just an average.

Good luck