1 args remaining, starting with 'sack.dump' Ostermann's tcptrace -- version 3.2.1 -- Wed Dec 4, 1996 Running file 'sack.dump' 2 connection(s) traced: 8226 packets seen, 8226 TCP packets traced connection 1: host a: indigo.cs.ohiou.edu:1037 host b: lawyers.cs.ohiou.edu:ftp complete conn: yes first packet: Mon Aug 19 23:03:03.050939 last packet: Mon Aug 19 23:03:50.963011 elapsed time: 0:00:47.912072 total packets: 47 a->b: b->a: total packets: 24 total packets: 23 ack pkts sent: 23 ack pkts sent: 23 unique bytes sent: 108 unique bytes sent: 454 actual data pkts: 10 actual data pkts: 14 actual data bytes: 108 actual data bytes: 454 rexmt data pkts: 0 rexmt data pkts: 0 rexmt data bytes: 0 rexmt data bytes: 0 outoforder pkts: 0 outoforder pkts: 0 SYN/FIN pkts sent: 1/1 SYN/FIN pkts sent: 1/1 req 1323 ws/ts: Y/Y req 1323 ws/ts: Y/Y adv wind scale: 0 adv wind scale: 0 req sack: Y req sack: Y sacks sent: 0 sacks sent: 0 mss requested: 1460 bytes mss requested: 1460 bytes max segm size: 25 bytes max segm size: 78 bytes min segm size: 1 bytes min segm size: 1 bytes avg segm size: 10 bytes avg segm size: 32 bytes max win adv: 17520 bytes max win adv: 17520 bytes min win adv: 17520 bytes min win adv: 17520 bytes zero win adv: 0 times zero win adv: 0 times avg win adv: 17520 bytes avg win adv: 17520 bytes throughput: 2 Bps throughput: 9 Bps RTT samples: 10 RTT samples: 14 RTT min: 0.8 ms RTT min: 0.8 ms RTT max: 1.8 ms RTT max: 48.3 ms RTT avg: 1.1 ms RTT avg: 4.4 ms RTT stdev: 0.3 ms RTT stdev: 12.6 ms segs cum acked: 0 segs cum acked: 0 duplicate acks: 13 duplicate acks: 9 max # retrans: 0 max # retrans: 0 min retr time: 0.0 ms min retr time: 0.0 ms max retr time: 0.0 ms max retr time: 0.0 ms avg retr time: 0.0 ms avg retr time: 0.0 ms sdv retr time: 0.0 ms sdv retr time: 0.0 ms ================================ connection 2: host c: lawyers.cs.ohiou.edu:ftp-data host d: indigo.cs.ohiou.edu:1038 complete conn: yes first packet: Mon Aug 19 23:03:20.015809 last packet: Mon Aug 19 23:03:43.738944 elapsed time: 0:00:23.723135 total packets: 8179 c->d: d->c: total packets: 6171 total packets: 2008 ack pkts sent: 6170 ack pkts sent: 2008 unique bytes sent: 7501148 unique bytes sent: 2 actual data pkts: 6169 actual data pkts: 2 actual data bytes: 7606356 actual data bytes: 2 rexmt data pkts: 73 rexmt data pkts: 0 rexmt data bytes: 105208 rexmt data bytes: 0 outoforder pkts: 0 outoforder pkts: 0 SYN/FIN pkts sent: 1/1 SYN/FIN pkts sent: 1/1 req 1323 ws/ts: Y/Y req 1323 ws/ts: Y/Y adv wind scale: 0 adv wind scale: 0 req sack: Y req sack: Y sacks sent: 0 sacks sent: 229 mss requested: 1460 bytes mss requested: 1460 bytes max segm size: 1448 bytes max segm size: 1 bytes min segm size: 1 bytes min segm size: 1 bytes avg segm size: 1232 bytes avg segm size: 0 bytes max win adv: 17520 bytes max win adv: 17520 bytes min win adv: 17520 bytes min win adv: 144 bytes zero win adv: 0 times zero win adv: 0 times avg win adv: 17520 bytes avg win adv: 16994 bytes throughput: 316195 Bps throughput: 0 Bps RTT samples: 1678 RTT samples: 2 RTT min: 1.0 ms RTT min: 0.9 ms RTT max: 123.5 ms RTT max: 0.9 ms RTT avg: 6.6 ms RTT avg: 0.9 ms RTT stdev: 7.9 ms RTT stdev: 0.0 ms 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: 36 ambiguous acks: 0 RTT min (last): 2.3 ms RTT min (last): 0.0 ms RTT max (last): 43.7 ms RTT max (last): 0.0 ms RTT avg (last): 5.5 ms RTT avg (last): 0.0 ms RTT sdv (last): 7.0 ms RTT sdv (last): 0.0 ms segs cum acked: 4382 segs cum acked: 0 duplicate acks: 294 duplicate acks: 6168 max # retrans: 1 max # retrans: 0 min retr time: 29.3 ms min retr time: 0.0 ms max retr time: 83.8 ms max retr time: 0.0 ms avg retr time: 40.4 ms avg retr time: 0.0 ms sdv retr time: 0.0 ms sdv retr time: 0.0 ms