Re: Intel Alder Lake iwlwifi update
- Reply: Bjoern A. Zeeb: "Re: Intel Alder Lake iwlwifi update"
- In reply to: Kevin Oberman : "Re: Intel Alder Lake iwlwifi update"
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Date: Mon, 10 Nov 2025 00:57:58 UTC
On Sat, Jun 28, 2025 at 8:24 PM Kevin Oberman <rkoberman@gmail.com> wrote: > On Fri, Jun 27, 2025 at 10:47 PM Kevin Oberman <rkoberman@gmail.com> > wrote: > >> On Fri, Jun 27, 2025 at 3:53 PM Bjoern A. Zeeb <bz@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 >> > > Been too long since I used iperf2 and this is the first time I've used > iperf3. Forgot to set the bitrate, do it defaulted to 1Mbs. > Download still sucks. > [ ID] Interval Transfer Bitrate Jitter Lost/Total > Datagrams > [ 5] 0.00-10.00 sec 59.6 MBytes 50.0 Mbits/sec 0.000 ms 0/42824 > (0%) sender > [ 5] 0.00-10.00 sec 38.8 MBytes 32.5 Mbits/sec 0.403 ms > 12592/40453 (31%) receiver > Upload looks much better: > [ ID] Interval Transfer Bitrate Jitter Lost/Total > Datagrams > [ 5] 0.00-10.00 sec 715 MBytes 600 Mbits/sec 0.000 ms 0/513750 > (0%) sender > [ 5] 0.00-12.55 sec 715 MBytes 478 Mbits/sec 0.099 ms 0/513750 > (0%) receiver > > Really annoying that the download speed is what I'd like to see improved. > Router? It's an old ASUS released in 2016. > -- > Kevin Oberman, Part time kid herder and retired Network Engineer > E-mail: rkoberman@gmail.com > PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 > Some things fixed a couple of issues I've had. 1. I can now associate with a 5g network even though a 2.4g is available. It also shows up in "list aps" output. wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=0 ether 70:a8:d3:df:3c:de inet 192.168.1.5 netmask 0xffffff00 broadcast 192.168.1.255 inet6 fe80::72a8:d3ff:fedf:3cde%wlan0 prefixlen 64 scopeid 0x3 groups: wlan ssid xxxxxx_5G channel 157 (5785 MHz 11a vht/80+) bssid c0:89:ab:60:ae:63 regdomain FCC country US authmode WPA2/802.11i privacy ON deftxkey UNDEF AES-CCM 3:128-bit AES-CCM ucast:128-bit txpower 17 bmiss 7 mcastrate 6 mgmtrate 6 scanvalid 60 ampdutx -ampdurx ampdulimit 64k ampdudensity 4 -amsdutx amsdurx shortgi -ldpctx ldpcrx -uapsd vht vht40 vht80 vht160 -vht80p80 wme roaming MANUAL parent interface: iwlwifi0 media: IEEE 802.11 Wireless Ethernet VHT mode 11ac status: associated nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> 2. Using the same router that would only associate with TKIP, now AES-CCM works with no issues. So two issues seem to be fixed. Still a problem with poor download speeds. Using either Ookla Speedtest or iperf3, I get excellent upload speed (100M on my Frontier connection) but only 40M download. I get faster upload on my lan, but download still is limited to about 40M. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683