I am under the impression that was un-reverted with the true fix being the multicast fix. ?
Also, I am pedantic - "lag" to me means events measured in ms. "halting" means events measured in 100s of ms.
1 Like
That fix was only for people using multicast (e.g. enabling uPnP) in their WIFI network. The horrible walkaway bug had nothing to do with multicast.
FYI, you can integrate all recent mac80211 patches from @nbd for 22.03/Master into 21.02 without any modification needed. You just need to build your own images.
@dtaht, see below ath10k-ct-smallbuffers driver tests on a TP-Link RE450v2 running v22.03-rc6, it took me awhile to compile a image that fitted in this small device.
WiFi connectivity as per below (same computer, same spots for computer and AP):
I performed a couple of RRUL_BE tests, and TBH I suspect they might be affected by the AP being CPU bounded. First one with tx_burst=2.0 and second one with tx_burst=3.0:
And after I proceeded to repeat the same download/upload test I ran with my mt76, see below:
T="v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off"; for i in 1 2 4 8 16; do flent -l 30 --socket-stats -x --step-size=.05 --te=upload_streams=$i -H openwrt.lan -t tcp_nup-$i-threads-$T tcp_nup; flent -l 30 --socket-stats -x --step-size=.05 --te=download_streams=$i -H openwrt.lan -t tcp_ndown-$i-threads-$T tcp_ndown; done
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_nup test. Expected run time: 40 seconds.
Data file written to ./tcp_nup-2022-08-12T194639.109026.tcp_nup-1-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_nup test run from 2022-08-12 19:46:39.109026
Title: 'tcp_nup-1-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 39.20 45.10 ms 800
TCP upload avg : 354.70 N/A Mbits/s 800
TCP upload sum : 354.70 N/A Mbits/s 800
TCP upload::1 : 354.70 362.35 Mbits/s 800
TCP upload::1::tcp_cwnd : 1539.68 1543.00 490
TCP upload::1::tcp_delivery_rate : 330.99 331.51 490
TCP upload::1::tcp_pacing_rate : 499.96 472.00 490
TCP upload::1::tcp_rtt : 45.06 45.62 490
TCP upload::1::tcp_rtt_var : 0.49 0.18 490
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_ndown test. Expected run time: 40 seconds.
Data file written to ./tcp_ndown-2022-08-12T194725.070275.tcp_ndown-1-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_ndown test run from 2022-08-12 19:47:25.070275
Title: 'tcp_ndown-1-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 9.95 11.35 ms 799
TCP download avg : 283.63 N/A Mbits/s 799
TCP download sum : 283.63 N/A Mbits/s 799
TCP download::1 : 283.63 288.70 Mbits/s 799
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_nup test. Expected run time: 40 seconds.
Data file written to ./tcp_nup-2022-08-12T194810.417894.tcp_nup-2-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_nup test run from 2022-08-12 19:48:10.417894
Title: 'tcp_nup-2-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 35.94 42.50 ms 798
TCP upload avg : 196.17 N/A Mbits/s 799
TCP upload sum : 392.34 N/A Mbits/s 799
TCP upload::1 : 280.62 282.92 Mbits/s 799
TCP upload::1::tcp_cwnd : 1176.18 1229.00 491
TCP upload::1::tcp_delivery_rate : 257.47 258.11 491
TCP upload::1::tcp_pacing_rate : 396.56 370.02 491
TCP upload::1::tcp_rtt : 43.78 44.03 489
TCP upload::1::tcp_rtt_var : 0.80 0.33 489
TCP upload::2 : 111.72 112.48 Mbits/s 799
TCP upload::2::tcp_cwnd : 472.15 473.50 492
TCP upload::2::tcp_delivery_rate : 103.93 103.19 492
TCP upload::2::tcp_pacing_rate : 155.14 147.01 492
TCP upload::2::tcp_rtt : 44.66 44.86 491
TCP upload::2::tcp_rtt_var : 2.21 1.84 491
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_ndown test. Expected run time: 40 seconds.
Data file written to ./tcp_ndown-2022-08-12T194855.867234.tcp_ndown-2-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_ndown test run from 2022-08-12 19:48:55.867234
Title: 'tcp_ndown-2-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 10.80 12.40 ms 799
TCP download avg : 140.16 N/A Mbits/s 799
TCP download sum : 280.31 N/A Mbits/s 799
TCP download::1 : 92.25 94.63 Mbits/s 799
TCP download::2 : 188.06 188.11 Mbits/s 799
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_nup test. Expected run time: 40 seconds.
Data file written to ./tcp_nup-2022-08-12T194941.312158.tcp_nup-4-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_nup test run from 2022-08-12 19:49:41.312158
Title: 'tcp_nup-4-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 37.15 44.10 ms 799
TCP upload avg : 93.36 N/A Mbits/s 799
TCP upload sum : 373.46 N/A Mbits/s 799
TCP upload::1 : 88.45 89.39 Mbits/s 799
TCP upload::1::tcp_cwnd : 375.93 390.00 494
TCP upload::1::tcp_delivery_rate : 82.99 83.60 494
TCP upload::1::tcp_pacing_rate : 120.14 114.97 494
TCP upload::1::tcp_rtt : 45.06 45.65 493
TCP upload::1::tcp_rtt_var : 1.45 1.09 493
TCP upload::2 : 128.17 128.19 Mbits/s 799
TCP upload::2::tcp_cwnd : 544.09 539.50 494
TCP upload::2::tcp_delivery_rate : 120.07 120.41 494
TCP upload::2::tcp_pacing_rate : 174.69 168.15 494
TCP upload::2::tcp_rtt : 45.02 45.36 492
TCP upload::2::tcp_rtt_var : 1.43 1.11 492
TCP upload::3 : 78.62 79.63 Mbits/s 799
TCP upload::3::tcp_cwnd : 334.47 344.00 494
TCP upload::3::tcp_delivery_rate : 73.80 74.42 494
TCP upload::3::tcp_pacing_rate : 106.54 102.24 494
TCP upload::3::tcp_rtt : 45.25 45.70 491
TCP upload::3::tcp_rtt_var : 1.68 1.31 491
TCP upload::4 : 78.22 79.12 Mbits/s 799
TCP upload::4::tcp_cwnd : 332.14 341.50 494
TCP upload::4::tcp_delivery_rate : 73.25 73.68 494
TCP upload::4::tcp_pacing_rate : 106.32 101.80 494
TCP upload::4::tcp_rtt : 45.20 45.80 493
TCP upload::4::tcp_rtt_var : 1.56 1.27 493
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_ndown test. Expected run time: 40 seconds.
Data file written to ./tcp_ndown-2022-08-12T195026.986965.tcp_ndown-4-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_ndown test run from 2022-08-12 19:50:26.986965
Title: 'tcp_ndown-4-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 11.10 12.70 ms 799
TCP download avg : 69.18 N/A Mbits/s 799
TCP download sum : 276.72 N/A Mbits/s 799
TCP download::1 : 96.15 94.24 Mbits/s 799
TCP download::2 : 69.40 67.06 Mbits/s 799
TCP download::3 : 68.41 67.34 Mbits/s 799
TCP download::4 : 42.76 42.89 Mbits/s 799
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_nup test. Expected run time: 40 seconds.
Data file written to ./tcp_nup-2022-08-12T195112.637708.tcp_nup-8-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_nup test run from 2022-08-12 19:51:12.637708
Title: 'tcp_nup-8-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 39.00 46.65 ms 796
TCP upload avg : 45.08 N/A Mbits/s 799
TCP upload sum : 360.66 N/A Mbits/s 799
TCP upload::1 : 32.49 32.91 Mbits/s 799
TCP upload::1::tcp_cwnd : 146.48 151.00 492
TCP upload::1::tcp_delivery_rate : 30.42 30.31 492
TCP upload::1::tcp_pacing_rate : 42.62 41.88 492
TCP upload::1::tcp_rtt : 49.03 48.98 490
TCP upload::1::tcp_rtt_var : 2.46 2.14 490
TCP upload::2 : 31.75 32.28 Mbits/s 799
TCP upload::2::tcp_cwnd : 142.98 148.00 493
TCP upload::2::tcp_delivery_rate : 29.54 29.69 493
TCP upload::2::tcp_pacing_rate : 41.61 40.71 493
TCP upload::2::tcp_rtt : 49.08 48.95 491
TCP upload::2::tcp_rtt_var : 2.51 2.19 491
TCP upload::3 : 89.45 89.28 Mbits/s 799
TCP upload::3::tcp_cwnd : 397.33 393.00 494
TCP upload::3::tcp_delivery_rate : 84.16 82.24 494
TCP upload::3::tcp_pacing_rate : 120.01 114.33 494
TCP upload::3::tcp_rtt : 47.98 48.03 492
TCP upload::3::tcp_rtt_var : 1.56 1.24 492
TCP upload::4 : 29.60 30.14 Mbits/s 799
TCP upload::4::tcp_cwnd : 133.60 139.00 493
TCP upload::4::tcp_delivery_rate : 27.70 28.07 493
TCP upload::4::tcp_pacing_rate : 38.67 38.21 493
TCP upload::4::tcp_rtt : 49.11 49.26 493
TCP upload::4::tcp_rtt_var : 2.55 2.19 493
TCP upload::5 : 30.47 30.61 Mbits/s 799
TCP upload::5::tcp_cwnd : 137.33 142.00 493
TCP upload::5::tcp_delivery_rate : 28.45 28.85 493
TCP upload::5::tcp_pacing_rate : 39.78 39.07 493
TCP upload::5::tcp_rtt : 49.16 49.08 490
TCP upload::5::tcp_rtt_var : 2.56 2.26 490
TCP upload::6 : 56.69 57.52 Mbits/s 799
TCP upload::6::tcp_cwnd : 252.87 257.00 494
TCP upload::6::tcp_delivery_rate : 53.06 52.68 494
TCP upload::6::tcp_pacing_rate : 74.94 72.81 494
TCP upload::6::tcp_rtt : 48.48 48.62 493
TCP upload::6::tcp_rtt_var : 2.01 1.77 493
TCP upload::7 : 44.33 44.92 Mbits/s 799
TCP upload::7::tcp_cwnd : 198.82 202.00 492
TCP upload::7::tcp_delivery_rate : 41.48 41.67 492
TCP upload::7::tcp_pacing_rate : 58.42 57.00 492
TCP upload::7::tcp_rtt : 48.72 48.98 489
TCP upload::7::tcp_rtt_var : 2.20 1.87 489
TCP upload::8 : 45.88 45.95 Mbits/s 799
TCP upload::8::tcp_cwnd : 204.94 205.00 493
TCP upload::8::tcp_delivery_rate : 42.91 42.69 493
TCP upload::8::tcp_pacing_rate : 60.38 58.80 493
TCP upload::8::tcp_rtt : 48.61 48.76 489
TCP upload::8::tcp_rtt_var : 2.17 1.90 489
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_ndown test. Expected run time: 40 seconds.
Data file written to ./tcp_ndown-2022-08-12T195158.717881.tcp_ndown-8-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_ndown test run from 2022-08-12 19:51:58.717881
Title: 'tcp_ndown-8-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 11.60 13.70 ms 799
TCP download avg : 34.23 N/A Mbits/s 799
TCP download sum : 273.84 N/A Mbits/s 799
TCP download::1 : 28.30 26.88 Mbits/s 799
TCP download::2 : 40.94 40.12 Mbits/s 799
TCP download::3 : 33.05 32.92 Mbits/s 799
TCP download::4 : 27.36 27.06 Mbits/s 799
TCP download::5 : 28.41 28.18 Mbits/s 799
TCP download::6 : 37.60 35.01 Mbits/s 799
TCP download::7 : 43.26 42.31 Mbits/s 799
TCP download::8 : 34.92 34.03 Mbits/s 799
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_nup test. Expected run time: 40 seconds.
Data file written to ./tcp_nup-2022-08-12T195244.790658.tcp_nup-16-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_nup test run from 2022-08-12 19:52:44.790658
Title: 'tcp_nup-16-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 39.56 46.70 ms 794
TCP upload avg : 21.84 N/A Mbits/s 800
TCP upload sum : 349.43 N/A Mbits/s 800
TCP upload::1 : 19.23 19.44 Mbits/s 800
TCP upload::10 : 32.57 33.41 Mbits/s 800
TCP upload::10::tcp_cwnd : 145.14 142.00 491
TCP upload::10::tcp_delivery_rate : 30.55 28.59 491
TCP upload::10::tcp_pacing_rate : 42.97 39.46 491
TCP upload::10::tcp_rtt : 49.55 49.65 491
TCP upload::10::tcp_rtt_var : 2.54 2.17 491
TCP upload::11 : 32.23 31.05 Mbits/s 800
TCP upload::11::tcp_cwnd : 144.22 138.00 490
TCP upload::11::tcp_delivery_rate : 30.01 27.78 490
TCP upload::11::tcp_pacing_rate : 42.42 37.91 490
TCP upload::11::tcp_rtt : 49.70 50.06 488
TCP upload::11::tcp_rtt_var : 2.59 2.21 488
TCP upload::12 : 19.69 19.73 Mbits/s 800
TCP upload::12::tcp_cwnd : 88.39 89.00 490
TCP upload::12::tcp_delivery_rate : 18.36 18.28 490
TCP upload::12::tcp_pacing_rate : 25.63 24.70 490
TCP upload::12::tcp_rtt : 49.58 49.78 490
TCP upload::12::tcp_rtt_var : 2.98 2.64 490
TCP upload::13 : 20.28 20.43 Mbits/s 800
TCP upload::13::tcp_cwnd : 91.09 92.00 490
TCP upload::13::tcp_delivery_rate : 18.85 18.87 490
TCP upload::13::tcp_pacing_rate : 26.46 25.29 490
TCP upload::13::tcp_rtt : 49.58 49.52 490
TCP upload::13::tcp_rtt_var : 3.02 2.59 490
TCP upload::14 : 17.57 18.36 Mbits/s 800
TCP upload::14::tcp_cwnd : 78.99 82.00 489
TCP upload::14::tcp_delivery_rate : 16.39 16.88 489
TCP upload::14::tcp_pacing_rate : 22.80 22.86 489
TCP upload::14::tcp_rtt : 49.61 49.69 489
TCP upload::14::tcp_rtt_var : 3.11 2.72 489
TCP upload::15 : 19.60 19.73 Mbits/s 800
TCP upload::15::tcp_cwnd : 88.05 89.00 489
TCP upload::15::tcp_delivery_rate : 18.24 18.35 489
TCP upload::15::tcp_pacing_rate : 25.54 24.68 489
TCP upload::15::tcp_rtt : 49.48 49.47 488
TCP upload::15::tcp_rtt_var : 3.02 2.61 488
TCP upload::16 : 20.85 20.88 Mbits/s 800
TCP upload::16::tcp_cwnd : 93.81 95.00 489
TCP upload::16::tcp_delivery_rate : 19.47 19.60 489
TCP upload::16::tcp_pacing_rate : 27.13 26.22 489
TCP upload::16::tcp_rtt : 49.65 49.72 488
TCP upload::16::tcp_rtt_var : 2.94 2.46 488
TCP upload::1::tcp_cwnd : 86.55 87.00 489
TCP upload::1::tcp_delivery_rate : 17.88 17.96 488
TCP upload::1::tcp_pacing_rate : 25.05 24.17 489
TCP upload::1::tcp_rtt : 49.55 49.54 488
TCP upload::1::tcp_rtt_var : 3.05 2.64 488
TCP upload::2 : 30.03 29.75 Mbits/s 800
TCP upload::2::tcp_cwnd : 134.93 133.00 490
TCP upload::2::tcp_delivery_rate : 28.04 26.82 490
TCP upload::2::tcp_pacing_rate : 39.41 37.00 490
TCP upload::2::tcp_rtt : 49.65 50.14 487
TCP upload::2::tcp_rtt_var : 2.64 2.14 487
TCP upload::3 : 19.33 19.71 Mbits/s 800
TCP upload::3::tcp_cwnd : 86.81 87.00 490
TCP upload::3::tcp_delivery_rate : 18.00 18.08 489
TCP upload::3::tcp_pacing_rate : 25.12 24.16 490
TCP upload::3::tcp_rtt : 49.61 49.78 490
TCP upload::3::tcp_rtt_var : 3.07 2.67 490
TCP upload::4 : 19.65 19.91 Mbits/s 800
TCP upload::4::tcp_cwnd : 88.32 89.00 490
TCP upload::4::tcp_delivery_rate : 18.30 18.28 489
TCP upload::4::tcp_pacing_rate : 25.63 24.81 490
TCP upload::4::tcp_rtt : 49.56 49.60 490
TCP upload::4::tcp_rtt_var : 2.99 2.55 490
TCP upload::5 : 19.18 19.38 Mbits/s 800
TCP upload::5::tcp_cwnd : 86.33 87.00 489
TCP upload::5::tcp_delivery_rate : 17.97 17.96 488
TCP upload::5::tcp_pacing_rate : 24.91 24.19 489
TCP upload::5::tcp_rtt : 49.68 49.74 487
TCP upload::5::tcp_rtt_var : 3.04 2.66 487
TCP upload::6 : 19.59 19.65 Mbits/s 800
TCP upload::6::tcp_cwnd : 87.79 88.00 490
TCP upload::6::tcp_delivery_rate : 18.20 18.18 490
TCP upload::6::tcp_pacing_rate : 25.42 24.57 490
TCP upload::6::tcp_rtt : 49.58 49.61 490
TCP upload::6::tcp_rtt_var : 3.02 2.61 490
TCP upload::7 : 19.73 19.86 Mbits/s 800
TCP upload::7::tcp_cwnd : 88.63 90.00 489
TCP upload::7::tcp_delivery_rate : 18.41 18.47 489
TCP upload::7::tcp_pacing_rate : 25.62 24.89 489
TCP upload::7::tcp_rtt : 49.66 50.03 487
TCP upload::7::tcp_rtt_var : 3.01 2.64 487
TCP upload::8 : 19.51 19.76 Mbits/s 800
TCP upload::8::tcp_cwnd : 87.65 88.00 490
TCP upload::8::tcp_delivery_rate : 18.21 18.34 490
TCP upload::8::tcp_pacing_rate : 25.45 24.62 490
TCP upload::8::tcp_rtt : 49.50 49.40 489
TCP upload::8::tcp_rtt_var : 3.06 2.62 489
TCP upload::9 : 20.39 20.49 Mbits/s 800
TCP upload::9::tcp_cwnd : 91.79 93.00 489
TCP upload::9::tcp_delivery_rate : 19.03 19.17 488
TCP upload::9::tcp_pacing_rate : 26.59 25.65 489
TCP upload::9::tcp_rtt : 49.63 49.72 488
TCP upload::9::tcp_rtt_var : 2.95 2.57 488
Starting Flent 2.0.1 using Python 3.10.4.
Starting tcp_ndown test. Expected run time: 40 seconds.
Data file written to ./tcp_ndown-2022-08-12T195332.406689.tcp_ndown-16-threads-v22_03-rc6_ath10k-ct-smallbuffers_WLAN_ECN-on_loc_servs_off.flent.gz
Summary of tcp_ndown test run from 2022-08-12 19:53:32.406689
Title: 'tcp_ndown-16-threads-v22.03-rc6 ath10k-ct-smallbuffers WLAN ECN-on loc servs off'
avg median # data pts
Ping (ms) ICMP : 12.10 14.50 ms 800
TCP download avg : 16.64 N/A Mbits/s 800
TCP download sum : 266.16 N/A Mbits/s 800
TCP download::1 : 15.22 14.54 Mbits/s 800
TCP download::10 : 18.27 18.05 Mbits/s 800
TCP download::11 : 16.20 15.71 Mbits/s 800
TCP download::12 : 15.41 15.10 Mbits/s 800
TCP download::13 : 14.01 14.06 Mbits/s 800
TCP download::14 : 19.35 19.15 Mbits/s 800
TCP download::15 : 25.05 23.14 Mbits/s 800
TCP download::16 : 17.00 16.45 Mbits/s 800
TCP download::2 : 19.84 19.75 Mbits/s 800
TCP download::3 : 17.52 16.19 Mbits/s 800
TCP download::4 : 12.95 12.71 Mbits/s 800
TCP download::5 : 16.84 15.42 Mbits/s 800
TCP download::6 : 13.49 12.61 Mbits/s 800
TCP download::7 : 15.50 15.31 Mbits/s 800
TCP download::8 : 15.50 14.85 Mbits/s 800
TCP download::9 : 14.01 13.72 Mbits/s 800
I did a tcpdump capture of the 1-threaded test too, and it's available with the rest of the data followin the next link:
1 Like
thx once again. I can live with this. Consistently low latency, even with lowere
The only thing keeping me awake at night are not knowing performance at distance with multiple stations.
1 Like
At distance is in my list, however, multiple stations will be a bit trickier.
I took some time off. How's rc6, everyone?
2 Likes
It is working pretty fine here. After we got Felix's latest mt76 patch which solved the SSH issue, it's very stable.
I still owe you some farther from the AP flent tests, tho'.
3 Likes
the "ssh issue" was a larger problem involving aggregation into that wifi queue much like the fq_bug was. It may turn out that a retest of the wifi queues behaves better now also. And look!! All this great historical data to compare it against! :0
1 Like
Okay, you got it. I'll try to do it during my weekend.
3 Likes
@dtaht, here you go—same test variables, MCS, rate, channel, etc. The only difference is that I did previous tests in macOS 12.5, and now they are performed in macOS 12.5.1. So I hope it won't be a big difference.
Without further ado, a flent rrul_be test with 300 s duration follows:
Following, you can see TCP download and upload ping tests results:
- Note: I redid this test 3 times, and on all occasions, I found that a 1-threaded download provides better ping values. Not sure if this is a glitch.
And, just for completeness I did an iperf -c openwrt.lan -e -z --bounceback test:
------------------------------------------------------------
Client connecting to openwrt.lan, TCP port 5001 with pid 67119 (1 flows)
Write buffer size: 100 Byte
Bursting: 100 Byte writes 10 times every 1.00 second(s)
Bounce-back test (size= 100 Byte) (server hold req=0 usecs)
TOS set to 0x0 and nodelay (Nagle off)
TCP window size: 128 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.1.151%en0 port 54280 connected with 192.168.1.1 port 5001 (bb len/hold=100/0) (sock=5) (icwnd/mss/irtt=11/1448/3000) (ct=2.65 ms) on 2022-09-03 06:08:14 (AEST)
[ ID] Interval Transfer Bandwidth BB cnt=avg/min/max/stdev Rtry Cwnd/RTT RPS
[ 1] 0.0000-1.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.856/2.425/3.961/0.514 ms 0 12K/3000 us 350 rps
[ 1] 1.0000-2.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.794/2.447/3.750/0.380 ms 0 13K/3000 us 358 rps
[ 1] 2.0000-3.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=3.052/2.482/6.341/1.184 ms 0 14K/3000 us 328 rps
[ 1] 3.0000-4.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.854/2.510/4.140/0.531 ms 0 15K/2000 us 350 rps
[ 1] 4.0000-5.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.887/2.314/4.334/0.644 ms 0 16K/3000 us 346 rps
[ 1] 5.0000-6.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=3.175/2.522/7.153/1.435 ms 0 17K/3000 us 315 rps
[ 1] 6.0000-7.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.731/2.522/3.877/0.413 ms 0 18K/2000 us 366 rps
[ 1] 7.0000-8.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=2.718/2.537/3.785/0.378 ms 0 19K/3000 us 368 rps
[ 1] 8.0000-9.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=3.759/2.534/5.029/0.971 ms 0 20K/3000 us 266 rps
[ 1] 9.0000-10.0000 sec 1.95 KBytes 16.0 Kbits/sec 10=3.208/2.517/7.084/1.401 ms 0 21K/3000 us 312 rps
[ 1] 0.0000-10.0222 sec 19.7 KBytes 16.1 Kbits/sec 101=3.039/2.314/7.153/0.958 ms 0 21K/12000 us 329 rps
[ 1] 0.0000-10.0222 sec BB8-PDF: bin(w=100us):cnt(101)=24:1,25:5,26:31,27:25,28:10,29:4,30:2,31:1,34:1,35:1,37:3,38:3,39:2,40:1,42:2,43:1,44:1,46:1,50:1,51:1,64:1,66:1,71:1,72:1 (5.00/95.00/99.7%=25/50/72,Outliers=0,obl/obu=0/0)
Following, you can find the link to the usual flent data files. Would you be so kind as to render the ping_cdf graph yourself? I'm not very confident my matlib is working correctly.
I want someone else with an mt76 device to perform these tests. I keep seeing a difference between 15 MiB/s and 20 MiB/s comparing upload and download bandwidth.
2 Likes
@amteza you are the king of WiFi testing at the moment! I've been so enjoying seeing your diligent test results and correspondence with @dtaht.
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I try to help a little bit, like you, mate.
1 Like
The actual test that would test a little better for the ssh queue problem is rrul, not rrul_be. Somewhere on this thread was also a test that exercised the queues differently. Thanks as always for testing and providing full data, I will look at 'em harder in the morning, PST.
I keep thinking that putting the codel target 8ms patch back in would be good, but suspect we have some other set of buffering somewhere eating that 20ms. aql?
3 Likes
I was unhappy at seeing 350 rps, and I was wondering what was wrong and then i realized that I was thinking in terms of "rpm". 21000 RPM, (admittedly without load) is quite good..... I'm so done for the week...
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Dave, forgive my ignorance on this matter. Are we talking about a former patchset, or are we talking about something like https://forum.openwrt.org/t/aql-and-the-ath10k-is-lovely/59002/304?page=16
If you refer to the source code, can you point me in the right direction? Is it in mac80211? Long ago (3 years ago), I recall seeing in CoDel MS2TIME defined as 20 ms. Is it what you refer to?
I don't know why AQL is even needed on the mt76, and always thought it was too high by default for the ath10k. @nbd?
Since the original patches in 2016, MSTIME(8) worked fine in testing across the board for 5ghz, and I think openwrt has mostly disabled legacy rates for 2.4.
And prior to all this keruffle I was trying to aim for a max txop under multi-station contention of ~2.5ms or less.