On 03:49 AM 11/25/2005, Iosu Oteiza Cilveti wrote:
>I am obtaininig Rtt statistics about a TCP connection.I would like to export the data of the RTT graphic.
>Which is the exact command that I have to introduce in tethereal,or there is a special tool for it??
>It would be ideal if it was possible to present it somehow aggregated - either with a graph or an exportable ASCII table (list?) that could be further processed.(Matlab,excel...)
Ethereal, Statistics, IO GRAPH, Advanced in the Y Axis, then tcp.analysis.ack_rtt will give you the graph.
Or you can get stats via tcptrace. www.tcptrace.org From the online manual:
1 arg remaining, starting with 'indica.dmp.gz'
Ostermann's tcptrace -- version 6.4.5 -- Fri Jun 13, 2003
153 packets seen, 153 TCP packets traced
elapsed wallclock time: 0:00:00.128422, 1191 pkts/sec analyzed
trace file elapsed time: 0:00:19.092645
TCP connection info:
1 TCP connection traced:
TCP connection 1:
host a: 192.168.0.70:32791
host b: webco.ent.ohiou.edu:23
complete conn: yes
first packet: Thu Aug 29 18:54:54.782937 2002
last packet: Thu Aug 29 18:55:13.875583 2002
elapsed time: 0:00:19.092645
total packets: 153
filename: indica.dmp.gz
a->b: b->a:
total packets: 91 total packets: 62
. . . . . .
. . . . . .
throughput: 10 Bps throughput: 94 Bps
RTT samples: 48 RTT samples: 47
RTT min: 74.1 ms RTT min: 0.1 ms
RTT max: 204.0 ms RTT max: 38.8 ms
RTT avg: 108.6 ms RTT avg: 8.1 ms
RTT stdev: 44.2 ms RTT stdev: 14.7 ms
RTT from 3WHS: 75.0 ms RTT from 3WHS: 0.1 ms
RTT full_sz smpls: 1 RTT full_sz smpls: 1
RTT full_sz min: 79.5 ms RTT full_sz min: 0.1 ms
RTT full_sz max: 79.5 ms RTT full_sz max: 0.1 ms
RTT full_sz avg: 79.5 ms RTT full_sz avg: 0.1 ms
RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 0.0 ms
post-loss acks: 0 post-loss acks: 0
For the following 5 RTT statistics, only ACKs for
multiply-transmitted segments (ambiguous ACKs) were
considered. Times are taken from the last instance
of a segment.
ambiguous acks: 1 ambiguous acks: 0
RTT min (last): 76.3 ms RTT min (last): 0.0 ms
RTT max (last): 76.3 ms RTT max (last): 0.0 ms
RTT avg (last): 76.3 ms RTT avg (last): 0.0 ms
RTT sdv (last): 0.0 ms RTT sdv (last): 0.0 ms
segs cum acked: 0 segs cum acked: 0
duplicate acks: 0 duplicate acks: 0
triple dupacks: 0 triple dupacks: 0
max # retrans: 1 max # retrans: 0
min retr time: 380.2 ms min retr time: 0.0 ms
max retr time: 380.2 ms max retr time: 0.0 ms
avg retr time: 380.2 ms avg retr time: 0.0 ms
sdv retr time: 0.0 ms sdv retr time: 0.0 ms
