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RE: [PATCH v2 2/2] ath10k: Set sk_pacing_shift to 6 for 11AC WiFi chips

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> -----Original Message-----
> From: Toke Høiland-Jørgensen <toke@xxxxxxx>
> Sent: Friday, August 10, 2018 9:18 PM
> To: Wen Gong <wgong@xxxxxxxxxxxxxxxx>; Wen Gong
> <wgong@xxxxxxxxxxxxxx>; ath10k@xxxxxxxxxxxxxxxxxxx;
> johannes@xxxxxxxxxxxxxxxx
> Cc: linux-wireless@xxxxxxxxxxxxxxx
> Subject: RE: [PATCH v2 2/2] ath10k: Set sk_pacing_shift to 6 for 11AC WiFi
> chips
> 
> Wen Gong <wgong@xxxxxxxxxxxxxxxx> writes:
> 
> >>
> > Hi Toke,
> > Could you give the command line for the latency test?
> > https://flent.org/intro.html#quick-start
> > I used the command but test failed:
> > flent tcp_download -p 1 -l 60 -H 192.168.1.5 -t
> > text-to-be-included-in-plot -o file1.png error loading plotter: unable to find
> plot configuration "1"
> 
> Try something like:
> 
> 
> flent -H 192.168.1.5 -t "sk_pacing_shift 7" tcp_nup --test-parameter
> upload_streams=1
> 
> 
> This will note the value of sk_pacing_shift you are testing in the data file (so
> change that as appropriate), and you can vary the number of TCP streams by
> changing the upload_streams parameter.
> 
> Note that in this case I'm assuming you are running Flent on the device with
> the kernel you are trying to test, so you want a TCP transfer going
> *from* the device. If not, change "tcp_nup" to "tcp_ndown" and
> "upload_streams" to "download_streams". Upload is netperf TCP_STREAM
> test, and download is TCP_MAERTS.
> 
> When running the above command you'll get a summary output on the
> terminal that you can paste on the list; and also a data file to plot things form.
> For instance, you can do something like 'flent -p ping_cdf *.flent.gz' to get a
> CDF plot of all your test results afterwards. You are also very welcome to
> send me the .flent.gz data files and I'll take a look to make sure everything
> looks reasonable :)
> 
> -Toke

Hi Toke,

I have tested with your method for shift 6/8/10/7 all twice time in open air environment.
Shift 6:
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift6" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T110414.699512.sk_pacing_shift6.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift6' (at 2018-08-13 03:04:14.699512):

                           avg       median          # data pts
 Ping (ms) ICMP :         9.91         4.99 ms              350
 TCP upload avg :       242.48       262.43 Mbits/s         301
 TCP upload sum :       242.48       262.43 Mbits/s         301
 TCP upload::1  :       242.48       263.34 Mbits/s         271
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift6" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T113317.074077.sk_pacing_shift6.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift6' (at 2018-08-13 03:33:17.074077):

                           avg       median          # data pts
 Ping (ms) ICMP :         7.75         5.30 ms              350
 TCP upload avg :       239.17       250.84 Mbits/s         301
 TCP upload sum :       239.17       250.84 Mbits/s         301
 TCP upload::1  :       239.17       255.03 Mbits/s         266

Shift 8:
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift8" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T121433.187781.sk_pacing_shift8.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift8' (at 2018-08-13 04:14:33.187781):

                           avg       median          # data pts
 Ping (ms) ICMP :        17.12         7.07 ms              350
 TCP upload avg :       180.05       185.82 Mbits/s         301
 TCP upload sum :       180.05       185.82 Mbits/s         301
 TCP upload::1  :       180.05       189.41 Mbits/s         253
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift8" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T121602.382575.sk_pacing_shift8.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift8' (at 2018-08-13 04:16:02.382575):

                           avg       median          # data pts
 Ping (ms) ICMP :        13.90         5.89 ms              350
 TCP upload avg :       207.56       228.16 Mbits/s         301
 TCP upload sum :       207.56       228.16 Mbits/s         301
 TCP upload::1  :       207.56       228.11 Mbits/s         259

Shift 10:
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift10" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T121844.493498.sk_pacing_shift10.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift10' (at 2018-08-13 04:18:44.493498):

                           avg       median          # data pts
 Ping (ms) ICMP :        15.11         7.41 ms              350
 TCP upload avg :       162.38       164.10 Mbits/s         301
 TCP upload sum :       162.38       164.10 Mbits/s         301
 TCP upload::1  :       162.38       165.47 Mbits/s         252
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift10" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T122108.347163.sk_pacing_shift10.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift10' (at 2018-08-13 04:21:08.347163):

                           avg       median          # data pts
 Ping (ms) ICMP :        13.69         7.48 ms              350
 TCP upload avg :       171.11       170.52 Mbits/s         301
 TCP upload sum :       171.11       170.52 Mbits/s         301
 TCP upload::1  :       171.11       171.36 Mbits/s         258

Shift 7:
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift7" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T122948.020974.sk_pacing_shift7.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift7' (at 2018-08-13 04:29:48.020974):

                           avg       median          # data pts
 Ping (ms) ICMP :        14.12         6.61 ms              350
 TCP upload avg :       188.19       188.04 Mbits/s         301
 TCP upload sum :       188.19       188.04 Mbits/s         301
 TCP upload::1  :       188.19       190.88 Mbits/s         258
wgong@wgong-Latitude-E5440-1:~/flent$ flent -H 192.168.1.7 -t "sk_pacing_shift7" tcp_nup --test-parameter upload_streams=1
Started Flent 1.2.2 using Python 2.7.12.
Starting tcp_nup test. Expected run time: 70 seconds.
Data file written to ./tcp_nup-2018-08-13T123129.526514.sk_pacing_shift7.flent.gz.
Summary of tcp_nup test run 'sk_pacing_shift7' (at 2018-08-13 04:31:29.526514):

                           avg       median          # data pts
 Ping (ms) ICMP :        10.31         6.32 ms              350
 TCP upload avg :       212.70       233.69 Mbits/s         301
 TCP upload sum :       212.70       233.69 Mbits/s         301
 TCP upload::1  :       212.70       237.65 Mbits/s         262




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