Wireshark-bugs: [Wireshark-bugs] [Bug 7410] New: TCP Efficiency
Date: Tue, 26 Jun 2012 21:20:24 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7410

           Summary: TCP Efficiency
           Product: Wireshark
           Version: 1.8.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Dissection engine (libwireshark)
        AssignedTo: [email protected]
        ReportedBy: [email protected]


Build Information:
Version 1.8.0 (SVN Rev 43431 from /trunk-1.8)

Copyright 1998-2012 Gerald Combs <[email protected]> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (64-bit) with GTK+ 2.24.5, with Cairo 1.8.6, with Pango 1.29.3, with
GLib 2.29.8, with libpcap, with libz 1.2.3, without POSIX capabilities, with
SMI
0.4.8, without c-ares, without ADNS, with Lua 5.1, without Python, with GnuTLS
2.12.7, with Gcrypt 1.4.6, with MIT Kerberos, with GeoIP, with PortAudio
V19-devel (built Sep 30 2011 11:17:29), with AirPcap.

Running on Mac OS 10.7.4 (Darwin 11.4.0), with locale .UTF-8, with libpcap
version 1.1.1, with libz 1.2.5, GnuTLS 2.12.7, Gcrypt 1.4.6, without AirPcap.

Built using gcc 4.2.1 (Apple Inc. build 5666) (dot 3).

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
This is not a bug, it is simply a suggestion.
I already proposed this suggestion at Sharkfest 12 MB-9 session earlier today.

I would like to know if it would be possible to add a statistical result
showing the ratio between TCP Transmitted Bytes and TCP Retransmitted Bytes.

As an example, it could be under <Statistics> <Endpoint List> <TCP> but if it's
easier to display the results somewhere else in Wireshark it would be fine
also. 

The calculation could be done with the following formula : 
Total TCP Transmitted Bytes minus the TCP Retransmitted Bytes divided by the
TCP Transmitted Bytes. The Total Transmitted Bytes should include the
retransmitted ones. This mathematical operation would give us a ratio that
could be multiplied by 100 in order to obtain a TCP Efficiency percentage.

The previous formula is from RFC6349 but other calculation methods could be
used.   

Thanks,
Gilles Forget.

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