From: Manikantan Ramadas (mramadas@masaka.cs.ohiou.edu)
Date: 11/24/03
Date: Mon, 24 Nov 2003 16:31:36 -0500 From: Manikantan Ramadas <mramadas@masaka.cs.ohiou.edu> Subject: Re: tcptrace TRAFFIC Module and Detailed Analysis - Dupacks Message-ID: <20031124213136.GA1337@irg.cs.ohiou.edu>
Hi Giovanni,
The semantics of detecting triple duplicate acks was fixed to resemble
4.4 BSD Lite TCP stack with version 6.4.2. That still doesn't explain the
discrepancies you see between the long output and traffic module output,
however
.
Could you try running the 6.6.0 windows port of tcptrace to see if the
behavior persists? It should work on WinXP and probably on Win2K too, I
am told. (Incidentally we have a new 6.6.0 port for windows which should
work now.)
If you still observe the behavior in the newer release,
could you give me a small dumpfile that I can look at to see whats going on?
Thanks,
Mani.
On Fri, Nov 21, 2003 at 06:08:15PM +0100, Giovanni.Giambiasi@nokia.com wrote:
> Hi,
>
> I am testing performance of TCP over wireless. At the moment I am using Tcptrace version 6.2.0 for Windows.
> I have a couple of questions about the information regarding the amount of duplicated acks.
> If I analyse a dump file with the detailed analysis options (tcptrace -lr <dumpfile>) I can see the amount of dupacks for each TCP connection.
> If I use the TRAFFIC module on the same dump file (tcptrace -xtraffic <dumpfile>) I obtain rather different results.
> I attach two files: as you can see in the traffic_stats.dat files tcptrace tells me that 1 dupack was seen in the dumpfile, while analysing the detailed statistics there are much more dupacks than in the previous file).
>
> Could someone explain this behaviour?
>
> Thank you in advance.
>
> BR,
>
> Giovanni
>
Content-Description: detailed_analysis.txt
> 1 arg remaining, starting with 'anoukis_dack_6'
> Ostermann's tcptrace -- version 6.2.0 -- Fri Jul 26, 2002
>
> 339 packets seen, 256 TCP packets traced
> elapsed wallclock time: 0:00:18.144999, 18 pkts/sec analyzed
> trace file elapsed time: 0:00:50.284961
> TCP connection info:
> 6 TCP connections traced:
> TCP connection 1:
> host a: 10.200.192.104:1861
> host b: linux.sitadelle.com:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:06.848225 2003
> last packet: Wed Nov 19 18:36:15.404053 2003
> elapsed time: 0:00:08.555828
> total packets: 32
> filename: anoukis_dack_6
> a->b: b->a:
> total packets: 14 total packets: 18
> ack pkts sent: 13 ack pkts sent: 18
> pure acks sent: 11 pure acks sent: 2
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 538 unique bytes sent: 5192
> actual data pkts: 2 actual data pkts: 15
> actual data bytes: 538 actual data bytes: 5192
> rexmt data pkts: 0 rexmt data pkts: 0
> rexmt data bytes: 0 rexmt data bytes: 0
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 2 pushed data pkts: 14
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 305 bytes max segm size: 1460 bytes
> min segm size: 233 bytes min segm size: 17 bytes
> avg segm size: 268 bytes avg segm size: 346 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16217 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 16951 bytes avg win adv: 32123 bytes
> initial window: 233 bytes initial window: 413 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 4.184 secs data xmit time: 5.561 secs
> idletime max: 38367.3 ms idletime max: 38367.9 ms
> throughput: 63 Bps throughput: 607 Bps
>
> RTT samples: 3 RTT samples: 12
> RTT min: 878.8 ms RTT min: 0.5 ms
> RTT max: 1306.1 ms RTT max: 197.7 ms
> RTT avg: 1119.9 ms RTT avg: 80.1 ms
> RTT stdev: 218.9 ms RTT stdev: 80.7 ms
>
> RTT from 3WHS: 1174.9 ms RTT from 3WHS: 0.5 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 1
> RTT full_sz min: 1306.1 ms RTT full_sz min: 185.2 ms
> RTT full_sz max: 1306.1 ms RTT full_sz max: 185.2 ms
> RTT full_sz avg: 1306.0 ms RTT full_sz avg: 185.2 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 0.0 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 4
> duplicate acks: 15 duplicate acks: 1
> triple dupacks: 0 triple dupacks: 0
> 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
> ================================
> TCP connection 2:
> host c: 10.200.192.104:1862
> host d: 15.15.15.3:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:10.091399 2003
> last packet: Wed Nov 19 18:36:14.626246 2003
> elapsed time: 0:00:04.534847
> total packets: 17
> filename: anoukis_dack_6
> c->d: d->c:
> total packets: 9 total packets: 8
> ack pkts sent: 8 ack pkts sent: 8
> pure acks sent: 7 pure acks sent: 1
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 319 unique bytes sent: 5671
> actual data pkts: 1 actual data pkts: 6
> actual data bytes: 319 actual data bytes: 5671
> rexmt data pkts: 0 rexmt data pkts: 0
> rexmt data bytes: 0 rexmt data bytes: 0
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 1 pushed data pkts: 3
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 319 bytes max segm size: 1460 bytes
> min segm size: 319 bytes min segm size: 266 bytes
> avg segm size: 318 bytes avg segm size: 945 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16120 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 17059 bytes avg win adv: 30292 bytes
> initial window: 319 bytes initial window: 266 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 0.000 secs data xmit time: 2.225 secs
> idletime max: 39145.1 ms idletime max: 39145.7 ms
> throughput: 70 Bps throughput: 1251 Bps
>
> RTT samples: 2 RTT samples: 7
> RTT min: 546.9 ms RTT min: 0.5 ms
> RTT max: 1068.7 ms RTT max: 178.7 ms
> RTT avg: 807.7 ms RTT avg: 97.7 ms
> RTT stdev: 0.0 ms RTT stdev: 70.3 ms
>
> RTT from 3WHS: 546.9 ms RTT from 3WHS: 0.5 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 1
> RTT full_sz min: 1068.7 ms RTT full_sz min: 108.7 ms
> RTT full_sz max: 1068.7 ms RTT full_sz max: 108.7 ms
> RTT full_sz avg: 1068.5 ms RTT full_sz avg: 108.7 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 0.0 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 0
> duplicate acks: 6 duplicate acks: 1
> triple dupacks: 0 triple dupacks: 0
> 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
> ================================
> TCP connection 3:
> host e: 10.200.192.104:1863
> host f: 15.15.15.5:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:10.178131 2003
> last packet: Wed Nov 19 18:36:15.784073 2003
> elapsed time: 0:00:05.605941
> total packets: 9
> filename: anoukis_dack_6
> e->f: f->e:
> total packets: 5 total packets: 4
> ack pkts sent: 4 ack pkts sent: 4
> pure acks sent: 3 pure acks sent: 1
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 320 unique bytes sent: 2250
> actual data pkts: 1 actual data pkts: 2
> actual data bytes: 320 actual data bytes: 2250
> rexmt data pkts: 0 rexmt data pkts: 0
> rexmt data bytes: 0 rexmt data bytes: 0
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 1 pushed data pkts: 2
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 320 bytes max segm size: 1400 bytes
> min segm size: 320 bytes min segm size: 850 bytes
> avg segm size: 319 bytes avg segm size: 1124 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16120 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 17012 bytes avg win adv: 27005 bytes
> initial window: 320 bytes initial window: 1400 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 0.000 secs data xmit time: 2.355 secs
> idletime max: 37987.3 ms idletime max: 38145.1 ms
> throughput: 57 Bps throughput: 401 Bps
>
> RTT samples: 2 RTT samples: 3
> RTT min: 590.1 ms RTT min: 0.5 ms
> RTT max: 1390.5 ms RTT max: 157.8 ms
> RTT avg: 990.2 ms RTT avg: 91.6 ms
> RTT stdev: 0.0 ms RTT stdev: 81.5 ms
>
> RTT from 3WHS: 590.1 ms RTT from 3WHS: 0.5 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 1
> RTT full_sz min: 1390.5 ms RTT full_sz min: 116.4 ms
> RTT full_sz max: 1390.5 ms RTT full_sz max: 116.4 ms
> RTT full_sz avg: 1390.4 ms RTT full_sz avg: 116.4 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 0.0 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 0
> duplicate acks: 2 duplicate acks: 1
> triple dupacks: 0 triple dupacks: 0
> 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
> ================================
> TCP connection 4:
> host g: 10.200.192.104:1864
> host h: 15.15.15.5:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:12.153581 2003
> last packet: Wed Nov 19 18:36:20.130226 2003
> elapsed time: 0:00:07.976645
> total packets: 10
> filename: anoukis_dack_6
> g->h: h->g:
> total packets: 5 total packets: 5
> ack pkts sent: 4 ack pkts sent: 5
> pure acks sent: 3 pure acks sent: 1
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 291 unique bytes sent: 3025
> actual data pkts: 1 actual data pkts: 3
> actual data bytes: 291 actual data bytes: 3025
> rexmt data pkts: 0 rexmt data pkts: 0
> rexmt data bytes: 0 rexmt data bytes: 0
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 1 pushed data pkts: 2
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 291 bytes max segm size: 1440 bytes
> min segm size: 291 bytes min segm size: 185 bytes
> avg segm size: 290 bytes avg segm size: 1007 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16120 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 17012 bytes avg win adv: 28326 bytes
> initial window: 291 bytes initial window: 1400 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 0.000 secs data xmit time: 3.333 secs
> idletime max: 33641.2 ms idletime max: 33641.5 ms
> throughput: 36 Bps throughput: 379 Bps
>
> RTT samples: 2 RTT samples: 3
> RTT min: 1145.2 ms RTT min: 0.3 ms
> RTT max: 2130.1 ms RTT max: 189.4 ms
> RTT avg: 1637.6 ms RTT avg: 63.4 ms
> RTT stdev: 0.0 ms RTT stdev: 109.1 ms
>
> RTT from 3WHS: 1145.2 ms RTT from 3WHS: 0.5 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 1
> RTT full_sz min: 2130.1 ms RTT full_sz min: 189.4 ms
> RTT full_sz max: 2130.1 ms RTT full_sz max: 189.4 ms
> RTT full_sz avg: 2129.8 ms RTT full_sz avg: 189.4 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 0.0 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 1
> duplicate acks: 3 duplicate acks: 1
> triple dupacks: 0 triple dupacks: 0
> 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
> ================================
> TCP connection 5:
> host i: 10.200.192.104:1865
> host j: 15.15.15.2:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:12.178244 2003
> last packet: Wed Nov 19 18:36:47.830169 2003
> elapsed time: 0:00:35.651924
> total packets: 123
> filename: anoukis_dack_6
> i->j: j->i:
> total packets: 61 total packets: 62
> ack pkts sent: 60 ack pkts sent: 62
> pure acks sent: 58 pure acks sent: 2
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 637 unique bytes sent: 68331
> actual data pkts: 2 actual data pkts: 59
> actual data bytes: 637 actual data bytes: 81129
> rexmt data pkts: 0 rexmt data pkts: 9
> rexmt data bytes: 0 rexmt data bytes: 12798
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 2 pushed data pkts: 9
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 319 bytes max segm size: 1460 bytes
> min segm size: 318 bytes min segm size: 22 bytes
> avg segm size: 318 bytes avg segm size: 1375 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16098 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 17196 bytes avg win adv: 33155 bytes
> initial window: 318 bytes initial window: 1400 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 18.124 secs data xmit time: 31.214 secs
> idletime max: 5941.2 ms idletime max: 6129.3 ms
> throughput: 18 Bps throughput: 1917 Bps
>
> RTT samples: 3 RTT samples: 49
> RTT min: 1135.2 ms RTT min: 0.4 ms
> RTT max: 4417.9 ms RTT max: 199.4 ms
> RTT avg: 2557.8 ms RTT avg: 109.1 ms
> RTT stdev: 1684.5 ms RTT stdev: 73.1 ms
>
> RTT from 3WHS: 1135.2 ms RTT from 3WHS: 14.8 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 25
> RTT full_sz min: 4417.9 ms RTT full_sz min: 0.4 ms
> RTT full_sz max: 4417.9 ms RTT full_sz max: 191.5 ms
> RTT full_sz avg: 4417.4 ms RTT full_sz avg: 103.4 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 75.7 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 2
> duplicate acks: 59 duplicate acks: 11
> triple dupacks: 0 triple dupacks: 1
> 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
> ================================
> TCP connection 6:
> host k: 10.200.192.104:1866
> host l: 15.15.15.2:80
> complete conn: no (SYNs: 2) (FINs: 0)
> first packet: Wed Nov 19 18:36:12.197875 2003
> last packet: Wed Nov 19 18:36:36.213405 2003
> elapsed time: 0:00:24.015529
> total packets: 65
> filename: anoukis_dack_6
> k->l: l->k:
> total packets: 33 total packets: 32
> ack pkts sent: 32 ack pkts sent: 32
> pure acks sent: 31 pure acks sent: 1
> sack pkts sent: 0 sack pkts sent: 0
> max sack blks/ack: 0 max sack blks/ack: 0
> unique bytes sent: 321 unique bytes sent: 39281
> actual data pkts: 1 actual data pkts: 30
> actual data bytes: 321 actual data bytes: 39281
> rexmt data pkts: 0 rexmt data pkts: 0
> rexmt data bytes: 0 rexmt data bytes: 0
> zwnd probe pkts: 0 zwnd probe pkts: 0
> zwnd probe bytes: 0 zwnd probe bytes: 0
> outoforder pkts: 0 outoforder pkts: 0
> pushed data pkts: 1 pushed data pkts: 3
> SYN/FIN pkts sent: 1/0 SYN/FIN pkts sent: 1/0
> req sack: Y req sack: N
> sacks sent: 0 sacks sent: 0
> urgent data pkts: 0 pkts urgent data pkts: 0 pkts
> urgent data bytes: 0 bytes urgent data bytes: 0 bytes
> mss requested: 1460 bytes mss requested: 1460 bytes
> max segm size: 321 bytes max segm size: 1460 bytes
> min segm size: 321 bytes min segm size: 266 bytes
> avg segm size: 320 bytes avg segm size: 1309 bytes
> max win adv: 17520 bytes max win adv: 33580 bytes
> min win adv: 16098 bytes min win adv: 16384 bytes
> zero win adv: 0 times zero win adv: 0 times
> avg win adv: 17080 bytes avg win adv: 32758 bytes
> initial window: 321 bytes initial window: 266 bytes
> initial window: 1 pkts initial window: 1 pkts
> ttl stream length: NA ttl stream length: NA
> missed data: NA missed data: NA
> truncated data: 0 bytes truncated data: 0 bytes
> truncated packets: 0 pkts truncated packets: 0 pkts
> data xmit time: 0.000 secs data xmit time: 19.260 secs
> idletime max: 17558.0 ms idletime max: 17694.6 ms
> throughput: 13 Bps throughput: 1636 Bps
>
> RTT samples: 2 RTT samples: 31
> RTT min: 1130.5 ms RTT min: 0.5 ms
> RTT max: 2110.6 ms RTT max: 199.9 ms
> RTT avg: 1620.5 ms RTT avg: 101.9 ms
> RTT stdev: 0.0 ms RTT stdev: 68.1 ms
>
> RTT from 3WHS: 1130.5 ms RTT from 3WHS: 29.8 ms
>
> RTT full_sz smpls: 1 RTT full_sz smpls: 12
> RTT full_sz min: 2110.6 ms RTT full_sz min: 0.6 ms
> RTT full_sz max: 2110.6 ms RTT full_sz max: 199.9 ms
> RTT full_sz avg: 2110.4 ms RTT full_sz avg: 116.1 ms
> RTT full_sz stdev: 0.0 ms RTT full_sz stdev: 61.4 ms
>
> post-loss acks: 0 post-loss acks: 0
> segs cum acked: 0 segs cum acked: 0
> duplicate acks: 30 duplicate acks: 1
> triple dupacks: 0 triple dupacks: 0
> 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
-- "Happiness is when what you think, what you say, and what you do are in harmony." - Mahatma Gandhi ____________________________________________________________________ * Manikantan Ramadas * IRG, OU * http://irg.cs.ohiou.edu/~mramadas * ____________________________________________________________________
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