Anteus
January 23, 2023, 9:35pm
#223
A quick comparison of AX vs AC both on 80MHz channel 64 one floor so a few meters on rt3200 with a 7915 chip on openwrt r21885 with all offloading including wifi downstream on a Macbook Air M2. Even saw some RTT over 1000 ms on a couple of AX runs. iperf server on a raspberry connected with ethernet.
AX
[ 7] 0.00-1.00 sec 6.04 MBytes 50.6 Mbits/sec 408336 1.34 MBytes 412ms
[ 7] 1.00-2.00 sec 39.6 KBytes 325 Kbits/sec 0 987 KBytes 662ms
[ 7] 2.00-3.00 sec 1.60 MBytes 13.4 Mbits/sec 653944 822 KBytes 489ms
[ 7] 3.00-4.01 sec 1.53 MBytes 12.8 Mbits/sec 0 1.11 MBytes 596ms
[ 7] 4.01-5.01 sec 382 KBytes 3.13 Mbits/sec 0 1.05 MBytes 512ms
[ 7] 5.01-6.00 sec 2.91 MBytes 24.6 Mbits/sec 0 877 KBytes 627ms
[ 7] 6.00-7.00 sec 2.35 MBytes 19.6 Mbits/sec 0 1.08 MBytes 573ms
[ 7] 7.00-8.00 sec 524 KBytes 4.30 Mbits/sec 0 1.00 MBytes 485ms
[ 7] 8.00-9.00 sec 2.68 MBytes 22.5 Mbits/sec 0 1.08 MBytes 572ms
[ 7] 9.00-10.00 sec 2.09 MBytes 17.5 Mbits/sec 0 1.10 MBytes 663ms
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 7] 0.00-10.00 sec 20.1 MBytes 16.9 Mbits/sec 1062280 sender
[ 7] 0.00-10.60 sec 18.7 MBytes 14.8 Mbits/sec receiver
AC
[ ID] Interval Transfer Bitrate Retr Cwnd RTT
[ 7] 0.00-1.00 sec 43.9 MBytes 368 Mbits/sec 4881208 1.48 MBytes 20ms
[ 7] 1.00-2.00 sec 50.0 MBytes 420 Mbits/sec 2896000 1.53 MBytes 23ms
[ 7] 2.00-3.00 sec 50.4 MBytes 423 Mbits/sec 1448000 1.57 MBytes 16ms
[ 7] 3.00-4.00 sec 51.3 MBytes 431 Mbits/sec 0 1.61 MBytes 35ms
[ 7] 4.00-5.00 sec 44.5 MBytes 373 Mbits/sec 1531984 2.04 MBytes 25ms
[ 7] 5.00-6.00 sec 42.5 MBytes 356 Mbits/sec 1743392 2.05 MBytes 51ms
[ 7] 6.00-7.00 sec 45.2 MBytes 380 Mbits/sec 0 2.06 MBytes 38ms
[ 7] 7.00-8.00 sec 47.8 MBytes 401 Mbits/sec 1867920 1.56 MBytes 33ms
[ 7] 8.00-9.00 sec 46.2 MBytes 386 Mbits/sec 1614520 1.18 MBytes 62ms
[ 7] 9.00-10.00 sec 44.7 MBytes 375 Mbits/sec 1669544 1.90 MBytes 35ms
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 7] 0.00-10.00 sec 466 MBytes 391 Mbits/sec 17652568 sender
[ 7] 0.00-10.02 sec 464 MBytes 388 Mbits/sec receiver
1 Like
Try a 160MHz channel as a workaround.
Are you using IPerf2 on the Mac to test it?
Anteus
January 24, 2023, 8:23pm
#226
Tried that too but didn't help.
Anteus
January 24, 2023, 8:23pm
#227
iperf3-darwin available on macOS
1 Like
Anteus
January 24, 2023, 9:13pm
#229
dtaht seems to have found something
I have been trying to characterize a very difficult bug in the ac and
This shows up in my flent data as huge swings in delay for tcp + voip
https://lists.openwrt.org/pipermail/openwrt-devel/2023-January/040356.html
5 Likes
72105
January 25, 2023, 5:24am
#230
You can do the test in AX mode but using 20 MHz and 40 MHz width, to see if the results get better or worse.
Wait, how did you get the RTT time with iPerf3 ?
Anteus
January 25, 2023, 7:48am
#232
Tried, it didn't help though.
1 Like
Anteus
January 25, 2023, 7:49am
#233
It's there by default on iperf3-darwin on macOS
==> Searching for similarly named formulae and casks...
Error: No formulae or casks found for iperf3-darwin.
What is iperf3-darwin?
Anteus
January 25, 2023, 2:25pm
#235
Sorry I thought I got it from brew but seems to be there from default on macOS.
❯ iperf3-darwin -v
iperf 3.8.1 - -- Apple version iperf3-88 (cJSON 1.7.13)
Darwin 22.2.0 Darwin Kernel Version 22.2.0: Fri Nov 11 02:06:26 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T8112 arm64
Optional features available: sendfile / zerocopy
1 Like
Damn this has always been there and I have never noticed it, very useful for macOS/iOS, thanks!
1 Like
Anteus
January 25, 2023, 2:34pm
#237
How do you get it on iOS? For terminal there I use iSH which uses Alpine and it has some older version of iperf3 and no RTT.
True and correct… but you can do the inverse
Yes it’s a bit stupid and this add the delay of the routing from the router/AP but is the only way I’ve found to test the delay from iOS. It can be useful to test the difference between one AP and another, not to test an “absolute performance” :
Example from my iPad Mini 6 to my MacBook Air (cabled to the router obviously)
% iperf3-darwin -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.1.128, port 49670
[ 5] local 192.168.1.10 port 5201 connected to 192.168.1.128 port 49671
[ 8] local 192.168.1.10 port 5201 connected to 192.168.1.128 port 49672
[ 10] local 192.168.1.10 port 5201 connected to 192.168.1.128 port 49673
[ 12] local 192.168.1.10 port 5201 connected to 192.168.1.128 port 49674
[ 14] local 192.168.1.10 port 5201 connected to 192.168.1.128 port 49675
[ ID] Interval Transfer Bitrate Retr Cwnd RTT
[ 5] 0.00-1.00 sec 14.8 MBytes 124 Mbits/sec 440192 754 KBytes 38ms
[ 8] 0.00-1.00 sec 15.1 MBytes 127 Mbits/sec 606712 791 KBytes 41ms
[ 10] 0.00-1.00 sec 17.6 MBytes 147 Mbits/sec 325800 987 KBytes 42ms
[ 12] 0.00-1.00 sec 15.1 MBytes 127 Mbits/sec 376480 993 KBytes 42ms
[ 14] 0.00-1.00 sec 15.1 MBytes 127 Mbits/sec 379376 1009 KBytes 42ms
[SUM] 0.00-1.00 sec 77.7 MBytes 652 Mbits/sec 2128560
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 1.00-2.00 sec 18.5 MBytes 155 Mbits/sec 79640 576 KBytes 27ms
[ 8] 1.00-2.00 sec 18.6 MBytes 156 Mbits/sec 79640 612 KBytes 27ms
[ 10] 1.00-2.00 sec 19.6 MBytes 164 Mbits/sec 70952 748 KBytes 28ms
[ 12] 1.00-2.00 sec 17.7 MBytes 148 Mbits/sec 33304 540 KBytes 23ms
[ 14] 1.00-2.00 sec 17.6 MBytes 148 Mbits/sec 41992 544 KBytes 23ms
[SUM] 1.00-2.00 sec 91.9 MBytes 771 Mbits/sec 305528
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 2.00-3.00 sec 19.7 MBytes 166 Mbits/sec 0 619 KBytes 28ms
[ 8] 2.00-3.00 sec 20.2 MBytes 169 Mbits/sec 0 652 KBytes 30ms
[ 10] 2.00-3.00 sec 22.2 MBytes 187 Mbits/sec 0 802 KBytes 36ms
[ 12] 2.00-3.00 sec 18.7 MBytes 157 Mbits/sec 0 577 KBytes 29ms
[ 14] 2.00-3.00 sec 18.8 MBytes 158 Mbits/sec 0 583 KBytes 29ms
[SUM] 2.00-3.00 sec 99.6 MBytes 836 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 3.00-4.00 sec 19.4 MBytes 163 Mbits/sec 0 648 KBytes 34ms
[ 8] 3.00-4.00 sec 19.9 MBytes 166 Mbits/sec 0 679 KBytes 37ms
[ 10] 3.00-4.00 sec 22.0 MBytes 184 Mbits/sec 0 837 KBytes 38ms
[ 12] 3.00-4.00 sec 18.5 MBytes 155 Mbits/sec 0 600 KBytes 28ms
[ 14] 3.00-4.00 sec 18.6 MBytes 156 Mbits/sec 0 607 KBytes 28ms
[SUM] 3.00-4.00 sec 98.3 MBytes 824 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 4.00-5.00 sec 19.8 MBytes 166 Mbits/sec 0 663 KBytes 21ms
[ 8] 4.00-5.00 sec 20.2 MBytes 170 Mbits/sec 0 693 KBytes 21ms
[ 10] 4.00-5.00 sec 22.0 MBytes 185 Mbits/sec 0 860 KBytes 22ms
[ 12] 4.00-5.00 sec 18.6 MBytes 156 Mbits/sec 0 612 KBytes 21ms
[ 14] 4.00-5.00 sec 18.8 MBytes 158 Mbits/sec 0 621 KBytes 21ms
[SUM] 4.00-5.00 sec 99.3 MBytes 834 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 5.00-6.00 sec 19.7 MBytes 165 Mbits/sec 0 670 KBytes 29ms
[ 8] 5.00-6.00 sec 19.9 MBytes 167 Mbits/sec 0 699 KBytes 29ms
[ 10] 5.00-6.00 sec 20.4 MBytes 171 Mbits/sec 88328 639 KBytes 29ms
[ 12] 5.00-6.00 sec 19.1 MBytes 160 Mbits/sec 0 638 KBytes 29ms
[ 14] 5.00-6.00 sec 19.0 MBytes 160 Mbits/sec 0 634 KBytes 29ms
[SUM] 5.00-6.00 sec 98.1 MBytes 822 Mbits/sec 88328
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 6.00-7.00 sec 19.8 MBytes 166 Mbits/sec 0 687 KBytes 30ms
[ 8] 6.00-7.00 sec 20.3 MBytes 170 Mbits/sec 0 731 KBytes 35ms
[ 10] 6.00-7.00 sec 19.7 MBytes 166 Mbits/sec 0 684 KBytes 30ms
[ 12] 6.00-7.00 sec 19.7 MBytes 165 Mbits/sec 0 680 KBytes 30ms
[ 14] 6.00-7.00 sec 19.6 MBytes 164 Mbits/sec 0 676 KBytes 30ms
[SUM] 6.00-7.00 sec 99.1 MBytes 831 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 7.00-8.00 sec 20.0 MBytes 168 Mbits/sec 0 728 KBytes 45ms
[ 8] 7.00-8.00 sec 20.4 MBytes 171 Mbits/sec 0 769 KBytes 45ms
[ 10] 7.00-8.00 sec 19.7 MBytes 165 Mbits/sec 0 713 KBytes 45ms
[ 12] 7.00-8.00 sec 19.8 MBytes 166 Mbits/sec 0 721 KBytes 45ms
[ 14] 7.00-8.00 sec 19.6 MBytes 164 Mbits/sec 0 717 KBytes 45ms
[SUM] 7.00-8.00 sec 99.6 MBytes 834 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 8.00-9.00 sec 19.5 MBytes 164 Mbits/sec 53576 550 KBytes 23ms
[ 8] 8.00-9.00 sec 19.8 MBytes 166 Mbits/sec 102808 580 KBytes 23ms
[ 10] 8.00-9.00 sec 19.1 MBytes 160 Mbits/sec 31856 526 KBytes 23ms
[ 12] 8.00-9.00 sec 19.2 MBytes 162 Mbits/sec 60816 554 KBytes 23ms
[ 14] 8.00-9.00 sec 19.2 MBytes 162 Mbits/sec 34752 543 KBytes 23ms
[SUM] 8.00-9.00 sec 96.9 MBytes 813 Mbits/sec 283808
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 9.00-10.00 sec 20.0 MBytes 168 Mbits/sec 0 625 KBytes 26ms
[ 8] 9.00-10.00 sec 20.4 MBytes 171 Mbits/sec 0 658 KBytes 26ms
[ 10] 9.00-10.00 sec 19.4 MBytes 163 Mbits/sec 0 567 KBytes 26ms
[ 12] 9.00-10.00 sec 19.9 MBytes 167 Mbits/sec 0 626 KBytes 26ms
[ 14] 9.00-10.00 sec 19.8 MBytes 166 Mbits/sec 0 617 KBytes 26ms
[SUM] 9.00-10.00 sec 99.6 MBytes 835 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 10.00-10.01 sec 147 KBytes 125 Mbits/sec 0 625 KBytes 33ms
[ 8] 10.00-10.01 sec 212 KBytes 181 Mbits/sec 0 658 KBytes 26ms
[ 10] 10.00-10.01 sec 147 KBytes 125 Mbits/sec 0 567 KBytes 26ms
[ 12] 10.00-10.01 sec 147 KBytes 125 Mbits/sec 0 626 KBytes 26ms
[ 14] 10.00-10.01 sec 127 KBytes 108 Mbits/sec 0 617 KBytes 26ms
[SUM] 10.00-10.01 sec 781 KBytes 665 Mbits/sec 0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.01 sec 191 MBytes 160 Mbits/sec 573408 sender
[ 8] 0.00-10.01 sec 195 MBytes 163 Mbits/sec 789160 sender
[ 10] 0.00-10.01 sec 202 MBytes 169 Mbits/sec 516936 sender
[ 12] 0.00-10.01 sec 186 MBytes 156 Mbits/sec 470600 sender
[ 14] 0.00-10.01 sec 186 MBytes 156 Mbits/sec 456120 sender
[SUM] 0.00-10.01 sec 961 MBytes 805 Mbits/sec 2806224 sender
I have to check which options are compatible with iperf3 and iperf3-darwin!
PS: this is a bit off topic here. maybe we can continue in a new thread? Can be useful for iOS users (that are not few
2 Likes
run a server instance on the Mac and use an app of iperf3 on iOS (there are some on the App Store), then you can see the RTT time from the macOS instance/server.
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