Ethereal-dev: Re: [Ethereal-dev] Apparently NAI's Sniffer product does application response ti

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From: Richard Sharpe <rsharpe@xxxxxxxxxxxxxxxxx>
Date: Tue, 30 Sep 2003 22:52:30 -0700 (PDT)
On Wed, 1 Oct 2003, Ian Schorr wrote:

> According to their docs in the latest release of Sniffer Pro (4.75 
> SP3), and as best as I've been able to extract from NAI themselves:
> 
> To obtain "Application Response Time" for TCP-based protocols, they 
> simply measure TCP ACK RTT.  For UDP-based protocols, they simply 
> measure the time from the sending of a datagram in one direction, to 
> the observation of a datagram in the oposite direction (which is, 
> presumably, the response).
> 
> I've pointed out on numerous occasions that these statistics are 
> meaningless, at least from a ART/SRT standpoint.
> 
> This, by the way, appears to have been true for at least the past three 
> years.

Oh well.

Actually, we need to add similar stuff for HTTP as well ...

Regards
-----
Richard Sharpe, rsharpe[at]ns.aus.com, rsharpe[at]samba.org, 
sharpe[at]ethereal.com, http://www.richardsharpe.com