Wireshark-users: Re: [Wireshark-users] wireshark throughput calculation
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From: Stephen Fisher <stephentfisher@xxxxxxxxx>
Date: Mon, 8 Jan 2007 14:13:26 -0800
On Mon, Jan 08, 2007 at 02:03:49PM -0800, Stephen Fisher wrote:
> On Fri, Jan 05, 2007 at 03:26:02PM +0100, To Van Phu wrote:
> > 
> > Is it the time elapsed since the previous packet?
> 
> Yes.  This is the relevent code from gtk/tcp_graph.c in function 
> tput_make_elmtlist():
> 
> 	double time = tmp->rel_secs + tmp->rel_usecs/1000000.0;
> 	dtime = time - (oldest->rel_secs + oldest->rel_usecs/1000000.0);
> 
> 	sum += tmp->th_seglen;
> 	tput = sum / dtime;

Let me correct myself: the use of the name oldest sounds like it uses 
the first packet's time delta to the current packet.  I haven't looked 
very closely at all of the code though sorry.


Steve