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Date: Sun, 10 Aug 2014 19:55:37 +1000
From: grenville armitage <garmitage@swin.edu.au>
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Subject: Re: A problem on TCP in High RTT Environment.
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On 08/10/2014 12:23, John-Mark Gurney wrote:
	[..]

> The next thing would be to get a tcpdump, and take a look at the
> window size.. Wireshark has lots of neat tools to make this analysis
> easy...  Another tool that is good is tcptrace..  It can output a
> variety of different graphs that will help you track down, and see
> what part of the system is the problem...

Also, SIFTR (man siftr) can provide detailed insight into the TCP flow's state over time.

cheers,
gja