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Re: wireshark and RTT
From: Simone Ferlin-Oliveira <ferlin () simula no>
Date: Mon, 26 Aug 2013 15:23:21 +0200

Hi, I am doing a download from server to client and I want to see the RTT
estimates.
Why is that so complicated? :)
Thanks for the link, but there is no conclusion there, right? What was the
conclusion of your discussion with the wireshark forum people?


On 26 August 2013 15:14, NITIN GOYAL <nitinkumgoyal () gmail com> wrote:


On Mon, Aug 26, 2013 at 6:28 PM, Simone Ferlin-Oliveira <ferlin () simula no>wrote:


I am trying to extract RTT values of a tracefile involving multiple TCP
flows, but this
looks a bit tricky in wireshark. Could somebody give some help?
I have xprimented with tcp.analysis.ack_rtt and advanced option in the
Y-axis scaling but the values are not convincing - or how does wireshark
calculate them?


I had the same issue.  I had a long discussion with few people on this and
it actually depends on how you see the vlaues and wher exactly you are
doing the capture.

You can refer this link:


http://stackoverflow.com/questions/12915540/rtt-timing-for-tcp-packet-using-wireshark

You can find out some older discussion on this forum with the guy who have
actually written the algo to calculate the rtt.

Regards
Nitin

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