Re: tcptrace-bugs measuring throughput from syn to fin

From: Manikantan Ramadas (
Date: 10/02/03

Date: Thu, 2 Oct 2003 19:58:22 -0400
From: Manikantan Ramadas <>
Subject: Re: tcptrace-bugs measuring throughput from syn to fin
Message-ID: <>

Hi Stefan,

  Could you please send us a dumpfile exhibiting this behavior?

On Thu, Oct 02, 2003 at 05:03:27PM +0200, Stefan Alfredsson wrote:
> Hello,
> >From what I understand, the throughput is calculated from the
> first packet seen to the last packet seen in with the same
> addr,port pairs.
> Is there a way to make tcptrace only count the time between syn
> and fin instead?
> In my specific situation, I run experiments over a simulated wireless
> link which introduces bit errors.
> Sometimes an error affects the port number, and as they are (almost)
> sequentially allocated this means that an erronenous packet in an early
> connection may be misjudged to belong to a later stream, or the other
> way around.
> This means that the throughput for a connection may be way off, because
> an erroneous packet was determined to be the "first" in the particular
> stream.
> I tried the "-c" flag to only count connections with syn and fin seen,
> but the same behavior existed there.
> Ideas?
> Regards,
> Stefan

"Happiness is when what you think, what you say, and what you do
are in harmony."                                - Mahatma Gandhi
* Manikantan Ramadas * IRG, OU * *

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