On Fri, Jun 27, 2025 at 3:53 PM Bjoern A. Zeeb <b...@freebsd.org> wrote:
> On Fri, 27 Jun 2025, Kevin Oberman wrote: > > > Sorry that this took so long. I finally got around to trying an iperf3 > test > > and it looks just about the same my speedtest. I am really surprised at > the > > upload speed. It's about what I was seeing using netspeed, but that is > > about at my max upload of 40M. ifconfig shows media: IEEE 802.11 Wireless > > Ethernet VHT mode 11ac. > > I assume the channel is equally vht/80 and the linuxkpi sysctl would not > show anything else as before. > > > Your Cwnd stays very low. Can you try UDP as well? > > > A normal TX run here: > > [ ID] Interval Transfer Bitrate Retr Cwnd > [ 5] 0.00-1.01 sec 95.8 MBytes 797 Mbits/sec 0 1.62 MBytes > [ 5] 1.01-2.01 sec 99.8 MBytes 836 Mbits/sec 0 1.62 MBytes > [ 5] 2.01-3.01 sec 99.6 MBytes 837 Mbits/sec 0 1.62 MBytes > [ 5] 3.01-4.01 sec 101 MBytes 842 Mbits/sec 0 1.62 MBytes > [ 5] 4.01-5.00 sec 98.6 MBytes 835 Mbits/sec 0 1.62 MBytes > [ 5] 5.00-6.00 sec 100 MBytes 839 Mbits/sec 0 1.62 MBytes > [ 5] 6.00-7.00 sec 100 MBytes 839 Mbits/sec 0 1.62 MBytes > [ 5] 7.00-8.01 sec 94.5 MBytes 790 Mbits/sec 0 1.62 MBytes > [ 5] 8.01-9.01 sec 101 MBytes 847 Mbits/sec 0 1.62 MBytes > [ 5] 9.01-10.01 sec 100 MBytes 840 Mbits/sec 0 1.62 MBytes > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bitrate Retr > [ 5] 0.00-10.01 sec 991 MBytes 831 Mbits/sec 0 sender > [ 5] 0.00-10.02 sec 991 MBytes 830 Mbits/sec > receiver > > > And a TX run with retransmit (you can see the recovery): > > [ ID] Interval Transfer Bitrate Retr Cwnd > [ 5] 0.00-1.00 sec 90.2 MBytes 753 Mbits/sec 0 1.62 MBytes > [ 5] 1.00-2.03 sec 73.0 MBytes 600 Mbits/sec 0 1.62 MBytes > [ 5] 2.03-3.01 sec 49.0 MBytes 417 Mbits/sec 271 313 KBytes > [ 5] 3.01-4.00 sec 43.0 MBytes 364 Mbits/sec 0 483 KBytes > [ 5] 4.00-5.00 sec 47.0 MBytes 394 Mbits/sec 0 615 KBytes > [ 5] 5.00-6.06 sec 58.9 MBytes 466 Mbits/sec 0 729 KBytes > [ 5] 6.06-7.01 sec 54.1 MBytes 480 Mbits/sec 0 811 KBytes > [ 5] 7.01-8.00 sec 89.4 MBytes 752 Mbits/sec 0 871 KBytes > [ 5] 8.00-9.00 sec 98.8 MBytes 829 Mbits/sec 0 914 KBytes > [ 5] 9.00-10.01 sec 98.0 MBytes 817 Mbits/sec 0 943 KBytes > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bitrate Retr > [ 5] 0.00-10.01 sec 702 MBytes 588 Mbits/sec 271 sender > [ 5] 0.00-10.02 sec 702 MBytes 587 Mbits/sec > receiver > > > > Here's the server side for a -R run (RX as seen from client side): > > [ ID] Interval Transfer Bitrate Retr Cwnd > [ 5] 0.00-1.01 sec 25.4 MBytes 212 Mbits/sec 0 752 KBytes > [ 5] 1.01-2.00 sec 23.5 MBytes 198 Mbits/sec 0 795 KBytes > [ 5] 2.00-3.00 sec 23.5 MBytes 197 Mbits/sec 0 835 KBytes > [ 5] 3.00-4.01 sec 21.9 MBytes 183 Mbits/sec 0 873 KBytes > [ 5] 4.01-5.01 sec 22.2 MBytes 187 Mbits/sec 0 908 KBytes > [ 5] 5.01-6.00 sec 23.1 MBytes 195 Mbits/sec 0 944 KBytes > [ 5] 6.00-7.01 sec 27.0 MBytes 225 Mbits/sec 0 983 KBytes > [ 5] 7.01-8.01 sec 23.4 MBytes 196 Mbits/sec 0 1017 KBytes > [ 5] 8.01-9.01 sec 23.2 MBytes 195 Mbits/sec 0 1.02 MBytes > [ 5] 9.01-10.01 sec 26.4 MBytes 221 Mbits/sec 0 1.13 MBytes > [ 5] 10.01-10.01 sec 128 KBytes 606 Mbits/sec 0 1.13 MBytes > > > -- > Bjoern A. Zeeb r15:7 > Since both directions were the same, I'll keep it short. Transmit (Upload): [ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams [ 5] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.000 ms 0/899 (0%) sender [ 5] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.275 ms 0/899 (0%) receiver Receive (Download): [ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams [ 5] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.000 ms 0/898 (0%) sender [ 5] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.572 ms 0/898 (0%) receiver -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkober...@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683
