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From: Michael Krupp <michaelkrupp@gmx.net>
To: michal.kazior@tieto.com
Cc: ath10k@lists.infradead.org
Subject: Re: Support for QCA6174 [168c:003e]
Date: Thu, 29 Oct 2015 21:44:17 +0100	[thread overview]
Message-ID: <56328521.7030308@gmx.net> (raw)
In-Reply-To: <562F6790.8070601@gmx.net>


[-- Attachment #1.1: Type: text/plain, Size: 18452 bytes --]

Hello Michał,

I did some more testing with iperf, two different APs:
 * TP-Link TL-WR941ND
 * Speedport W 723V B

I'm using my old notebook WiFi (AR9285, ath9k) as reference here. All of the
results below are reliably repeatable, with minimal deviation. Kernel versions
do not seem to have any meaningful impact, neither does setting the TCP/CC
algorithm. The following tests were run on 4.2 using "reno".

The numbers I get look very strange to me. I tried playing around with buffer
sizes, but with no effect (http://lists.infradead.org/pipermail/ath10k/2015-October/006160.html)

I also noted, that the QCA6174 does not seem to like close proximity to the AP.
When I get any closer than about 3m to the AP, connection drops to less than
1Mbit/s average. Same result with both APs vs the QCA6174 (TCP):

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec   128 KBytes  1.05 Mbits/sec
[  3]  1.0- 2.0 sec   128 KBytes  1.05 Mbits/sec
[  3]  2.0- 3.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  3.0- 4.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  4.0- 5.0 sec   128 KBytes  1.05 Mbits/sec
[  3]  5.0- 6.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  6.0- 7.0 sec   384 KBytes  3.15 Mbits/sec
[  3]  7.0- 8.0 sec   128 KBytes  1.05 Mbits/sec
[  3]  8.0- 9.0 sec   256 KBytes  2.10 Mbits/sec
[  3]  9.0-10.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 10.0-11.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 11.0-12.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 12.0-13.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 13.0-14.0 sec   128 KBytes  1.05 Mbits/sec
[  3] 14.0-15.0 sec   256 KBytes  2.10 Mbits/sec


UDP traffic at first is more or less stable around 40Mbit/s, but also randomly
drops down to zero, quickly ramps up to 100M, drops again and finally
stabilizes at around 100M again (log cropped):

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  5.16 MBytes  43.3 Mbits/sec
[  3]  1.0- 2.0 sec  4.74 MBytes  39.8 Mbits/sec
[  3]  2.0- 3.0 sec  5.70 MBytes  47.8 Mbits/sec
[  3]  3.0- 4.0 sec  4.59 MBytes  38.5 Mbits/sec
[  3]  4.0- 5.0 sec  4.63 MBytes  38.8 Mbits/sec
... // seems stable at first, then drops and quickly ramps up
[  3] 53.0-54.0 sec  4.48 MBytes  37.6 Mbits/sec
[  3] 54.0-55.0 sec  2.67 MBytes  22.4 Mbits/sec
[  3] 55.0-56.0 sec   294 KBytes  2.41 Mbits/sec
[  3] 56.0-57.0 sec  2.13 MBytes  17.9 Mbits/sec
[  3] 57.0-58.0 sec  8.09 MBytes  67.9 Mbits/sec
[  3] 58.0-59.0 sec  12.2 MBytes   102 Mbits/sec
[  3] 59.0-60.0 sec  13.2 MBytes   110 Mbits/sec
... // stable for a couple of seconds, then drops again
[  3] 65.0-66.0 sec  13.2 MBytes   111 Mbits/sec
[  3] 66.0-67.0 sec  7.11 MBytes  59.7 Mbits/sec
[  3] 67.0-68.0 sec  4.24 MBytes  35.6 Mbits/sec
[  3] 68.0-69.0 sec  2.30 MBytes  19.3 Mbits/sec
[  3] 69.0-70.0 sec  3.20 MBytes  26.8 Mbits/sec
[  3] 70.0-71.0 sec  1.93 MBytes  16.2 Mbits/sec
[  3] 71.0-72.0 sec  1.92 MBytes  16.1 Mbits/sec
[  3] 72.0-73.0 sec  2.80 MBytes  23.5 Mbits/sec
[  3] 73.0-74.0 sec  4.11 MBytes  34.5 Mbits/sec
[  3] 74.0-75.0 sec  3.11 MBytes  26.1 Mbits/sec
[  3] 75.0-76.0 sec  2.47 MBytes  20.7 Mbits/sec
[  3] 76.0-77.0 sec   678 KBytes  5.55 Mbits/sec
[  3] 77.0-78.0 sec   589 KBytes  4.82 Mbits/sec
[  3] 78.0-79.0 sec  68.9 KBytes   564 Kbits/sec
[  3] 79.0-80.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 80.0-81.0 sec  68.9 KBytes   564 Kbits/sec
... // peaks and drops between 0 and around 580k
[  3] 107.0-108.0 sec   138 KBytes  1.13 Mbits/sec
[  3] 108.0-109.0 sec   586 KBytes  4.80 Mbits/sec
[  3] 109.0-110.0 sec   597 KBytes  4.89 Mbits/sec
[  3] 110.0-111.0 sec   350 KBytes  2.87 Mbits/sec
[  3] 111.0-112.0 sec   212 KBytes  1.74 Mbits/sec
[  3] 112.0-113.0 sec   741 KBytes  6.07 Mbits/sec
[  3] 113.0-114.0 sec  1.48 MBytes  12.4 Mbits/sec
[  3] 114.0-115.0 sec  2.19 MBytes  18.4 Mbits/sec
... // now slowly ramps up again
[  3] 131.0-132.0 sec  5.06 MBytes  42.4 Mbits/sec
[  3] 132.0-133.0 sec  9.00 MBytes  75.5 Mbits/sec
[  3] 133.0-134.0 sec  10.8 MBytes  90.7 Mbits/sec
[  3] 134.0-135.0 sec  12.8 MBytes   108 Mbits/sec
... // and stabilizes
[  3] 169.0-170.0 sec  11.1 MBytes  93.2 Mbits/sec
[  3] 170.0-171.0 sec  11.6 MBytes  97.3 Mbits/sec
[  3] 171.0-172.0 sec  10.4 MBytes  87.6 Mbits/sec
[  3] 172.0-173.0 sec  11.7 MBytes  97.9 Mbits/sec

This behavior is reproducible with both APs. Only difference is that the
W 723V B only reaches about 45Mbit/s.

My old AR9285 remains stable between 40 and 50Mbit/s, with both APs.



I'm really reaching a point here, where I do not know enough about WiFi to debug
this any further... Would more test data (maybe nstat, tcpdump, etc...) be of
any use for you or someone else to help fix this problem?



Greetings,
Michael

---

Some more TCP-tests with iperf. Parallelization (ipef -P X) does not seem to
have any effect on total average throughput. I cropped the logs for better
clarity, when there were no significant changes anymore.

1) TL-WR941ND <-> AR9285 (TCP):

It slowly ramps up and stabilizes around 45Mbit/s:

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  2.50 MBytes  21.0 Mbits/sec
[  3]  1.0- 2.0 sec  2.38 MBytes  19.9 Mbits/sec
[  3]  2.0- 3.0 sec  2.38 MBytes  19.9 Mbits/sec
[  3]  3.0- 4.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  4.0- 5.0 sec  2.00 MBytes  16.8 Mbits/sec
[  3]  5.0- 6.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3]  6.0- 7.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3]  7.0- 8.0 sec  2.75 MBytes  23.1 Mbits/sec
[  3]  8.0- 9.0 sec  2.38 MBytes  19.9 Mbits/sec
[  3]  9.0-10.0 sec  2.25 MBytes  18.9 Mbits/sec
[  3] 10.0-11.0 sec  2.00 MBytes  16.8 Mbits/sec
[  3] 11.0-12.0 sec  2.62 MBytes  22.0 Mbits/sec
[  3] 12.0-13.0 sec  2.50 MBytes  21.0 Mbits/sec
[  3] 13.0-14.0 sec  2.88 MBytes  24.1 Mbits/sec
[  3] 14.0-15.0 sec  2.62 MBytes  22.0 Mbits/sec
[  3] 15.0-16.0 sec  2.62 MBytes  22.0 Mbits/sec
[  3] 16.0-17.0 sec  2.62 MBytes  22.0 Mbits/sec
[  3] 17.0-18.0 sec  2.62 MBytes  22.0 Mbits/sec
[  3] 18.0-19.0 sec  2.88 MBytes  24.1 Mbits/sec
[  3] 19.0-20.0 sec  2.75 MBytes  23.1 Mbits/sec
[  3] 20.0-21.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 21.0-22.0 sec  5.25 MBytes  44.0 Mbits/sec
[  3] 22.0-23.0 sec  5.25 MBytes  44.0 Mbits/sec
[  3] 23.0-24.0 sec  5.12 MBytes  43.0 Mbits/sec
[  3] 24.0-25.0 sec  5.38 MBytes  45.1 Mbits/sec
[  3] 25.0-26.0 sec  5.25 MBytes  44.0 Mbits/sec
[  3] 26.0-27.0 sec  5.12 MBytes  43.0 Mbits/sec
[  3] 27.0-28.0 sec  5.25 MBytes  44.0 Mbits/sec
[  3] 28.0-29.0 sec  5.12 MBytes  43.0 Mbits/sec
[  3] 29.0-30.0 sec  5.25 MBytes  44.0 Mbits/sec
[  3] 30.0-31.0 sec  5.38 MBytes  45.1 Mbits/sec
...

2) TL-WR941ND <-> QCA6174 (TCP):

Connection is mostly stable around 5.2Mbit/s, but seems to randomy drop to
1.05Mbit/s.

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3]  1.0- 2.0 sec   640 KBytes  5.24 Mbits/sec
[  3]  2.0- 3.0 sec   768 KBytes  6.29 Mbits/sec
[  3]  3.0- 4.0 sec   640 KBytes  5.24 Mbits/sec
[  3]  4.0- 5.0 sec   768 KBytes  6.29 Mbits/sec
[  3]  5.0- 6.0 sec   768 KBytes  6.29 Mbits/sec
[  3]  6.0- 7.0 sec   768 KBytes  6.29 Mbits/sec
[  3]  7.0- 8.0 sec   768 KBytes  6.29 Mbits/sec
[  3]  8.0- 9.0 sec   640 KBytes  5.24 Mbits/sec
[  3]  9.0-10.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 10.0-11.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 11.0-12.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 12.0-13.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 13.0-14.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 14.0-15.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 15.0-16.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 16.0-17.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 17.0-18.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 18.0-19.0 sec   128 KBytes  1.05 Mbits/sec
[  3] 19.0-20.0 sec   128 KBytes  1.05 Mbits/sec
[  3] 20.0-21.0 sec   128 KBytes  1.05 Mbits/sec
[  3] 21.0-22.0 sec   256 KBytes  2.10 Mbits/sec
[  3] 22.0-23.0 sec   256 KBytes  2.10 Mbits/sec
[  3] 23.0-24.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 24.0-25.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 25.0-26.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 26.0-27.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 27.0-28.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 28.0-29.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 29.0-30.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 30.0-31.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 31.0-32.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 32.0-33.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 33.0-34.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 34.0-35.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 35.0-36.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 36.0-37.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 37.0-38.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 38.0-39.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 39.0-40.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 40.0-41.0 sec   640 KBytes  5.24 Mbits/sec
...

3) W 723V B <-> AR9285 (TCP):

Almost immediately reaches max throughput of around 35Mbit/s, then drops
repeatedly, and finally stabilizes at around 35Mbit/s:

[  3] local 192.168.1.153 port 39623 connected with 192.168.1.2 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  3.50 MBytes  29.4 Mbits/sec
[  3]  1.0- 2.0 sec  3.00 MBytes  25.2 Mbits/sec
[  3]  2.0- 3.0 sec  3.12 MBytes  26.2 Mbits/sec
[  3]  3.0- 4.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3]  4.0- 5.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3]  5.0- 6.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3]  6.0- 7.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3]  7.0- 8.0 sec  2.38 MBytes  19.9 Mbits/sec
[  3]  8.0- 9.0 sec  4.00 MBytes  33.6 Mbits/sec
[  3]  9.0-10.0 sec  4.00 MBytes  33.6 Mbits/sec
[  3] 10.0-11.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 11.0-12.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 12.0-13.0 sec  4.62 MBytes  38.8 Mbits/sec
[  3] 13.0-14.0 sec  4.50 MBytes  37.7 Mbits/sec
[  3] 14.0-15.0 sec  4.50 MBytes  37.7 Mbits/sec
[  3] 15.0-16.0 sec  4.62 MBytes  38.8 Mbits/sec
[  3] 16.0-17.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 17.0-18.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 18.0-19.0 sec  4.00 MBytes  33.6 Mbits/sec
[  3] 19.0-20.0 sec  3.88 MBytes  32.5 Mbits/sec
[  3] 20.0-21.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 21.0-22.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 22.0-23.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 23.0-24.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 24.0-25.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 25.0-26.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 26.0-27.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 27.0-28.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 28.0-29.0 sec  4.00 MBytes  33.6 Mbits/sec
[  3] 29.0-30.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 30.0-31.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 31.0-32.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 32.0-33.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 33.0-34.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 34.0-35.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 35.0-36.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 36.0-37.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 37.0-38.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 38.0-39.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 39.0-40.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 40.0-41.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 41.0-42.0 sec  4.62 MBytes  38.8 Mbits/sec
[  3] 42.0-43.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 43.0-44.0 sec  3.88 MBytes  32.5 Mbits/sec
[  3] 44.0-45.0 sec  3.12 MBytes  26.2 Mbits/sec
[  3] 45.0-46.0 sec  3.12 MBytes  26.2 Mbits/sec
[  3] 46.0-47.0 sec  2.75 MBytes  23.1 Mbits/sec
[  3] 47.0-48.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 48.0-49.0 sec  3.75 MBytes  31.5 Mbits/sec
[  3] 49.0-50.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 50.0-51.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 51.0-52.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 52.0-53.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 53.0-54.0 sec  4.00 MBytes  33.6 Mbits/sec
[  3] 54.0-55.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 55.0-56.0 sec  4.12 MBytes  34.6 Mbits/sec
[  3] 56.0-57.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 57.0-58.0 sec  4.38 MBytes  36.7 Mbits/sec
[  3] 58.0-59.0 sec  4.25 MBytes  35.7 Mbits/sec
[  3] 59.0-60.0 sec  4.25 MBytes  35.7 Mbits/sec
...

4) W 723V B <-> QCA6174 (TCP):

Connection seems stable at around 14Mbit/s at first, then starts jumping between
7 and 14 Mbit/s:

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3]  1.0- 2.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  2.0- 3.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3]  3.0- 4.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  4.0- 5.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  5.0- 6.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  6.0- 7.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  7.0- 8.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3]  8.0- 9.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3]  9.0-10.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3] 10.0-11.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 11.0-12.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 12.0-13.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 13.0-14.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 14.0-15.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 15.0-16.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 16.0-17.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 17.0-18.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 18.0-19.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3] 19.0-20.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 20.0-21.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 21.0-22.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 22.0-23.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3] 23.0-24.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 24.0-25.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 25.0-26.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 26.0-27.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 27.0-28.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 28.0-29.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 29.0-30.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 30.0-31.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 31.0-32.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 32.0-33.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 33.0-34.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 34.0-35.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 35.0-36.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 36.0-37.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 37.0-38.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 38.0-39.0 sec  1.50 MBytes  12.6 Mbits/sec
[  3] 39.0-40.0 sec  1.50 MBytes  12.6 Mbits/sec
[  3] 40.0-41.0 sec  1.50 MBytes  12.6 Mbits/sec
[  3] 41.0-42.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 42.0-43.0 sec  1.62 MBytes  13.6 Mbits/sec
[  3] 43.0-44.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 44.0-45.0 sec  1.50 MBytes  12.6 Mbits/sec
[  3] 45.0-46.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 46.0-47.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 47.0-48.0 sec  1.38 MBytes  11.5 Mbits/sec
[  3] 48.0-49.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 49.0-50.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 50.0-51.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 51.0-52.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 52.0-53.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 53.0-54.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 54.0-55.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 55.0-56.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 56.0-57.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 57.0-58.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 58.0-59.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 59.0-60.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 60.0-61.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 61.0-62.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 62.0-63.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 63.0-64.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 64.0-65.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 65.0-66.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 66.0-67.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 67.0-68.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 68.0-69.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 69.0-70.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 70.0-71.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 71.0-72.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 72.0-73.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 73.0-74.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 74.0-75.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 75.0-76.0 sec  1.88 MBytes  15.7 Mbits/sec
[  3] 76.0-77.0 sec  1.75 MBytes  14.7 Mbits/sec
[  3] 77.0-78.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 78.0-79.0 sec  1.50 MBytes  12.6 Mbits/sec
[  3] 79.0-80.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 80.0-81.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 81.0-82.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 82.0-83.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 83.0-84.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 84.0-85.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 85.0-86.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 86.0-87.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 87.0-88.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 88.0-89.0 sec   768 KBytes  6.29 Mbits/sec
[  3] 89.0-90.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 90.0-91.0 sec   896 KBytes  7.34 Mbits/sec
[  3] 91.0-92.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 92.0-93.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 93.0-94.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 94.0-95.0 sec  1.25 MBytes  10.5 Mbits/sec
[  3] 95.0-96.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 96.0-97.0 sec  1.00 MBytes  8.39 Mbits/sec
...

On 10/27/2015 01:01 PM, Michael Krupp wrote:
> Hello Michał,
> 
> thank you for pointing me to those discussions.
> 
> 
> I will repeat my tests using iperf to also cover UDP, and will also try some
> older kernel releases, pre-dating 3.19. Also I'll try another AP as mentioned
> earlier.
> 
> 
> Michael
> 
> On 10/27/2015 12:27 PM, Michal Kazior wrote:
>> On 27 October 2015 at 12:22, Michael Krupp <michaelkrupp@gmx.net> wrote:
>>> Hello Michał
>>>
>>> yes, I checked the actual performance via netcat, scp and rsync. I'll report
>>> back once I have tested against another AP.
>>
>> TCP performance is known to be tricky/poor in various scenarios. There
>> were some discussions in the past:
>>
>>  - http://lists.infradead.org/pipermail/ath10k/2015-October/006160.html
>>  - http://thread.gmane.org/gmane.linux.network/348420
>>
>>
>> Michał
>>
>> _______________________________________________
>> ath10k mailing list
>> ath10k@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/ath10k
>>
> 
> 
> 
> _______________________________________________
> ath10k mailing list
> ath10k@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/ath10k
> 


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      reply	other threads:[~2015-10-29 20:44 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-25  3:57 Support for QCA6174 [168c:003e] Michael Krupp
2015-10-26  7:20 ` Michal Kazior
2015-10-26 21:18   ` Michael Krupp
2015-10-27  6:22     ` Michal Kazior
2015-10-27 11:22       ` Michael Krupp
2015-10-27 11:27         ` Michal Kazior
2015-10-27 12:01           ` Michael Krupp
2015-10-29 20:44             ` Michael Krupp [this message]

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