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Groups > comp.arch.embedded > #28868
| Newsgroups | comp.arch.embedded |
|---|---|
| From | Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> |
| Subject | Re: High packet rate ethernet with LwIP |
| References | (4 earlier) <qmajb2$66c$1@dont-email.me> <qmasbq$ta$1@dont-email.me> <nnd$140f1721$6b899046@38585550e4395ef3> <earloe9mlb4gc80n5dnp3sn5g4q7pmh3p2@4ax.com> <qmf695$mch$1@dont-email.me> |
| Message-ID | <nnd$16986ce1$26d445bf@0053bcc84bd3c331> (permalink) |
| Organization | Newsxs |
| Date | 2019-09-25 16:03 +0200 |
On 2019-09-25 David Brown wrote in comp.arch.embedded: > On 25/09/2019 06:55, upsidedown@downunder.com wrote: >> On Tue, 24 Sep 2019 14:22:51 +0200, Stef >> <stef33d@yahooI-N-V-A-L-I-D.com.invalid> wrote: >> >>> >>> What seems weird to me is that all ACK are followed by Dup ACK. Is this normal? See that al lot in other TCP traffic as well, but not on all ACK. >> >> The difference between Ack and duplicate Ack is only 8-9 us. Strange. >> > > It is, I think, due to lost packets. (Google "wireshark dup ack" for > suggestions.) Even stranger, when I just ping the board: 229 5.081046 192.168.125.128 192.168.125.133 ICMP 74 Echo (ping) request id=0x0001, seq=3492/41997, ttl=128 (no response found!) 230 5.081051 192.168.125.128 192.168.125.133 ICMP 74 Echo (ping) request id=0x0001, seq=3492/41997, ttl=128 (reply in 234) 234 5.081615 192.168.125.133 192.168.125.128 ICMP 74 Echo (ping) reply id=0x0001, seq=3492/41997, ttl=255 (request in 230) A duplicate request goes out from W10 with only 5 us difference? The same happens on the rest of the pings, one second apart. Nothing to do with the eval kit with LwIP, if I ping my router: 380 7.010693 192.168.125.128 192.168.125.254 ICMP 74 Echo (ping) request id=0x0001, seq=3539/54029, ttl=128 (no response found!)380 7.010693 192.168.125.128 192.168.125.254 ICMP 74 Echo (ping) request id=0x0001, seq=3539/54029, ttl=128 (no response found!) 381 7.010700 192.168.125.128 192.168.125.254 ICMP 74 Echo (ping) request id=0x0001, seq=3539/54029, ttl=128 (reply in 382) 382 7.011670 192.168.125.254 192.168.125.128 ICMP 74 Echo (ping) reply id=0x0001, seq=3539/54029, ttl=255 (request in 381) And after looking a little better, it seems to happen on almost all packets transmitted from this PC, but not on TLSv1.2 packets. Something weird in W10 or Wireshark? Or the PC network interface? -- Stef (remove caps, dashes and .invalid from e-mail address to reply by mail) Intolerance is the last defense of the insecure.
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High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-20 18:27 +0200
Re: High packet rate ethernet with LwIP upsidedown@downunder.com - 2019-09-20 21:20 +0300
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-23 10:37 +0200
Re: High packet rate ethernet with LwIP Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2019-09-23 14:08 +0300
Re: High packet rate ethernet with LwIP Richard Damon <Richard@Damon-Family.org> - 2019-09-23 07:13 -0400
Re: High packet rate ethernet with LwIP Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2019-09-23 18:55 +0300
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-23 14:04 +0200
Re: High packet rate ethernet with LwIP Dimiter_Popoff <dp@tgi-sci.com> - 2019-09-23 17:03 +0300
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-23 18:37 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-24 14:22 +0200
Re: High packet rate ethernet with LwIP upsidedown@downunder.com - 2019-09-25 07:55 +0300
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-25 09:51 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-25 16:03 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-25 11:59 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-25 13:16 +0200
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-25 09:42 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-25 13:41 +0200
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-25 14:10 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-25 15:22 +0200
Re: High packet rate ethernet with LwIP upsidedown@downunder.com - 2019-09-23 22:26 +0300
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-23 22:16 +0200
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-23 23:08 +0200
Re: High packet rate ethernet with LwIP Joe Chisolm <jchisolm6@earthlink.net> - 2019-09-20 13:44 -0500
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-23 10:46 +0200
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-21 19:00 +0200
Re: High packet rate ethernet with LwIP upsidedown@downunder.com - 2019-09-22 00:01 +0300
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-22 09:06 +0200
Re: High packet rate ethernet with LwIP upsidedown@downunder.com - 2019-09-22 11:29 +0300
Re: High packet rate ethernet with LwIP David Brown <david.brown@hesbynett.no> - 2019-09-22 23:24 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-23 11:10 +0200
Re: High packet rate ethernet with LwIP Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2019-09-23 11:03 +0200
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