[solved] Wifi module 3 very slow

BI66ER · Unread post by **BI66ER** » Fri Apr 19, 2019 4:38 am

I just got an N2 a couple of days ago. my wifi module 3 has been like a turtle in Ubuntu. It connects perfectly, it is just 50 times slower than my chromebook sitting beside it.

I even tried another known good adapter and it is slow as well.

outputs with module 3 plugged in:

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odroid@odroid:~$ lsmod
Module                  Size  Used by
fuse                  118784  5
squashfs               49152  0
cpufreq_ondemand       20480  0
cpufreq_powersave      16384  0
cpufreq_userspace      16384  0
cpufreq_conservative    16384  0
rtc_pcf8563            20480  0
rtl8192cu              73728  0
rtl_usb                24576  1 rtl8192cu
rtl8192c_common        53248  1 rtl8192cu
rtlwifi                86016  3 rtl_usb,rtl8192c_common,rtl8192cu
i2c_meson_master       20480  0
sch_fq_codel           20480  6
amvdec_vp9            143360  0
amvdec_vc1             53248  0
amvdec_real            40960  0
amvdec_mmpeg4          20480  0
amvdec_mpeg4           53248  0
amvdec_mpeg12          90112  0
amvdec_mmjpeg          20480  0
amvdec_mjpeg           36864  0
amvdec_h265           118784  0
amvdec_h264mvc         49152  0
amvdec_mh264          139264  0
amvdec_h264           106496  0
amvdec_avs             61440  0
stream_input          163840  13 amvdec_h265,amvdec_mjpeg,amvdec_mh264,amvdec_mmpeg4,amvdec_h264mvc,amvdec_mmjpeg,amvdec_real,amvdec_vp9,amvdec_h264,amvdec_mpeg12,amvdec_avs,amvdec_vc1,amvdec_mpeg4
decoder_common        131072  14 amvdec_h265,amvdec_mjpeg,amvdec_mh264,amvdec_mmpeg4,amvdec_h264mvc,amvdec_mmjpeg,amvdec_real,stream_input,amvdec_vp9,amvdec_h264,amvdec_mpeg12,amvdec_avs,amvdec_vc1,amvdec_mpeg4
firmware               24576  15 amvdec_h265,amvdec_mjpeg,amvdec_mh264,amvdec_mmpeg4,amvdec_h264mvc,amvdec_mmjpeg,decoder_common,amvdec_real,stream_input,amvdec_vp9,amvdec_h264,amvdec_mpeg12,amvdec_avs,amvdec_vc1,amvdec_mpeg4
media_clock            45056  2 decoder_common,stream_input
ip_tables              32768  0
x_tables               49152  1 ip_tables
ipv6                  483328  52

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odroid@odroid:~$ iwconfig
eth0      no wireless extensions.

lo        no wireless extensions.

p2p0      IEEE 802.11  ESSID:"SHAW-XXXXXX"  
          Mode:Managed  Frequency:2.417 GHz  Access Point: BC:4D:FB:2D:1C:28   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=56/70  Signal level=-54 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:3586   Missed beacon:0

wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:on

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odroid@odroid:~$ lsusb
Bus 002 Device 002: ID 05e3:0620 Genesys Logic, Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 1038:1200 SteelSeries ApS 
Bus 001 Device 011: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Bus 001 Device 010: ID 0835:8502 Action Star Enterprise Co., Ltd 
Bus 001 Device 009: ID 0835:8500 Action Star Enterprise Co., Ltd 
Bus 001 Device 008: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 001 Device 007: ID 0480:a006 Toshiba America Inc External Disk 1.5TB
Bus 001 Device 005: ID 0835:8501 Action Star Enterprise Co., Ltd 
Bus 001 Device 003: ID 0835:8500 Action Star Enterprise Co., Ltd 
Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Both of my adapters seem to want to use the rtl8192cu driver.
I've been trying to troubleshoot this for a couple of days and nothing seems to work.
- Changed wifi channels, b/g/n to g/n and g
- tried rtl8xxxxu driver
- disabled power management (was on before)
- tried blacklisting rtl8192cu

Unread post by **odroid** » Fri Apr 19, 2019 8:51 am

What is your current kernel version?
Mine is 4.9.168-24

BI66ER · Unread post by **BI66ER** » Fri Apr 19, 2019 8:57 am

Linux odroid 4.9.168-24

Unread post by **odroid** » Fri Apr 19, 2019 9:01 am

I see. We will measure the throughput by early next week.
Actual double-layer iperf test result should be over 40Mbps at least.
https://wiki.odroid.com/accessory/conne ... oid_series

BI66ER · Unread post by **BI66ER** » Sat Apr 20, 2019 9:10 am

I should have mentioned I was using an external usb hub and had been plugging my wifi dongle into it. I didn't think to mention this as I had tried both wifi adapters on the on-board usb ports as well as the hub.

Well, I tried completely disconnecting by usb hub and trying again on the on-board usb. No luck....

Then I tried connecting the wifi dongle to the usb OTG port via a micro usb to usb A adapter. Bingo, Consistent speeds finally!

Does the usb OTG port not share the same data bus? or is it powered seperately? This isn't exactly an ideal solution

tobetter · Unread post by **tobetter** » Sat Apr 20, 2019 4:14 pm

BI66ER wrote: ↑
Sat Apr 20, 2019 9:10 am
I should have mentioned I was using an external usb hub and had been plugging my wifi dongle into it. I didn't think to mention this as I had tried both wifi adapters on the on-board usb ports as well as the hub.

Well, I tried completely disconnecting by usb hub and trying again on the on-board usb. No luck....

Then I tried connecting the wifi dongle to the usb OTG port via a micro usb to usb A adapter. Bingo, Consistent speeds finally!

Does the usb OTG port not share the same data bus? or is it powered seperately? This isn't exactly an ideal solution

Could you show up the figures how the network is slow?
My test is like this with iperf3 are:

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[SUM]   0.00-10.00  sec  37.8 MBytes  31.7 Mbits/sec  288             sender
[SUM]   0.00-10.00  sec  37.2 MBytes  31.2 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  38.0 MBytes  31.9 Mbits/sec  275             sender
[SUM]   0.00-10.00  sec  37.5 MBytes  31.4 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  41.5 MBytes  34.8 Mbits/sec  269             sender
[SUM]   0.00-10.00  sec  40.9 MBytes  34.3 Mbits/sec                  receiver
[SUM]   0.00-10.01  sec  37.5 MBytes  31.5 Mbits/sec  272             sender
[SUM]   0.00-10.01  sec  37.0 MBytes  31.0 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  40.6 MBytes  34.1 Mbits/sec  300             sender
[SUM]   0.00-10.00  sec  40.0 MBytes  33.6 Mbits/sec                  receiver

and reverse mode:

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[SUM]   0.00-10.00  sec  54.6 MBytes  45.8 Mbits/sec  2259             sender
[SUM]   0.00-10.00  sec  54.3 MBytes  45.5 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  72.0 MBytes  60.4 Mbits/sec  289             sender
[SUM]   0.00-10.00  sec  69.5 MBytes  58.3 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  63.8 MBytes  53.6 Mbits/sec  171             sender
[SUM]   0.00-10.00  sec  62.2 MBytes  52.1 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  70.5 MBytes  59.1 Mbits/sec  256             sender
[SUM]   0.00-10.00  sec  68.9 MBytes  57.8 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  62.2 MBytes  52.2 Mbits/sec  338             sender
[SUM]   0.00-10.00  sec  60.4 MBytes  50.7 Mbits/sec                  receiver

BI66ER · Unread post by **BI66ER** » Sat Apr 20, 2019 6:26 pm

Module plugged into usb3:

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[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52
Connecting to host 192.168.0.52, port 5201
[  4] local 192.168.0.55 port 37556 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   129 KBytes  1.05 Mbits/sec    1   18.4 KBytes       
[  4]   1.00-2.00   sec  53.7 KBytes   440 Kbits/sec    0   15.6 KBytes       
[  4]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec    4   5.66 KBytes       
[  4]   3.00-4.00   sec  38.2 KBytes   312 Kbits/sec    1   4.24 KBytes       
[  4]   4.00-5.00   sec  11.3 KBytes  93.0 Kbits/sec    0   7.07 KBytes       
[  4]   5.00-6.00   sec  2.83 KBytes  23.1 Kbits/sec    1   2.83 KBytes       
[  4]   6.00-7.00   sec  22.6 KBytes   185 Kbits/sec    1   7.07 KBytes       
[  4]   7.00-8.00   sec  19.8 KBytes   163 Kbits/sec    0   9.90 KBytes       
[  4]   8.00-9.00   sec  7.07 KBytes  58.0 Kbits/sec    1   5.66 KBytes       
[  4]   9.00-10.00  sec  33.9 KBytes   278 Kbits/sec    0   9.90 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   318 KBytes   261 Kbits/sec    9             sender
[  4]   0.00-10.00  sec   209 KBytes   171 Kbits/sec                  receiver

iperf Done.

[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -R
Connecting to host 192.168.0.52, port 5201
Reverse mode, remote host 192.168.0.52 is sending
[  4] local 192.168.0.55 port 37574 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  9.90 KBytes  81.1 Kbits/sec                  
[  4]   1.00-2.00   sec  19.8 KBytes   162 Kbits/sec                  
[  4]   2.00-3.00   sec  35.4 KBytes   290 Kbits/sec                  
[  4]   3.00-4.00   sec  28.3 KBytes   232 Kbits/sec                  
[  4]   4.00-5.00   sec  35.4 KBytes   290 Kbits/sec                  
[  4]   5.00-6.00   sec  39.6 KBytes   324 Kbits/sec                  
[  4]   6.00-7.00   sec  39.6 KBytes   324 Kbits/sec                  
[  4]   7.00-8.00   sec  39.6 KBytes   324 Kbits/sec                  
[  4]   8.00-9.00   sec  32.5 KBytes   266 Kbits/sec                  
[  4]   9.00-10.00  sec  36.8 KBytes   301 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   509 KBytes   417 Kbits/sec    2             sender
[  4]   0.00-10.00  sec   445 KBytes   364 Kbits/sec                  receiver

iperf Done.

module plugged into micro usb OTG:

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[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52
Connecting to host 192.168.0.52, port 5201
[  4] local 192.168.0.55 port 37656 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   634 KBytes  5.18 Mbits/sec    1   39.6 KBytes       
[  4]   1.00-2.00   sec   178 KBytes  1.46 Mbits/sec    2   24.0 KBytes       
[  4]   2.00-3.00   sec   247 KBytes  2.03 Mbits/sec    1   17.0 KBytes       
[  4]   3.00-4.00   sec   307 KBytes  2.51 Mbits/sec    3   28.3 KBytes       
[  4]   4.00-5.00   sec  36.8 KBytes   301 Kbits/sec    3   7.07 KBytes       
[  4]   5.00-6.00   sec   233 KBytes  1.91 Mbits/sec    2   22.6 KBytes       
[  4]   6.00-7.00   sec   291 KBytes  2.39 Mbits/sec    1   33.9 KBytes       
[  4]   7.00-8.00   sec   310 KBytes  2.54 Mbits/sec    1   32.5 KBytes       
[  4]   8.00-9.00   sec   198 KBytes  1.62 Mbits/sec    1   39.6 KBytes       
[  4]   9.00-10.00  sec   539 KBytes  4.41 Mbits/sec    1   28.3 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  2.90 MBytes  2.44 Mbits/sec   16             sender
[  4]   0.00-10.00  sec  2.72 MBytes  2.29 Mbits/sec                  receiver

iperf Done.
[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -R
Connecting to host 192.168.0.52, port 5201
Reverse mode, remote host 192.168.0.52 is sending
[  4] local 192.168.0.55 port 37660 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   120 KBytes   985 Kbits/sec                  
[  4]   1.00-2.00   sec   332 KBytes  2.72 Mbits/sec                  
[  4]   2.00-3.00   sec   236 KBytes  1.93 Mbits/sec                  
[  4]   3.00-4.00   sec   223 KBytes  1.83 Mbits/sec                  
[  4]   4.00-5.00   sec   223 KBytes  1.83 Mbits/sec                  
[  4]   5.00-6.00   sec   276 KBytes  2.26 Mbits/sec                  
[  4]   6.00-7.00   sec   346 KBytes  2.84 Mbits/sec                  
[  4]   7.00-8.00   sec   448 KBytes  3.67 Mbits/sec                  
[  4]   8.00-9.00   sec   482 KBytes  3.95 Mbits/sec                  
[  4]   9.00-10.00  sec   346 KBytes  2.84 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  3.75 MBytes  3.15 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  3.34 MBytes  2.80 Mbits/sec                  receiver

iperf Done.

I have never run iperf3 before so forgive me If i did not run it correctly

tobetter · Unread post by **tobetter** » Sat Apr 20, 2019 11:31 pm

Oh...I see...it looks a bit slow...
Can we do these commands?

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iperf3 -c 192.168.0.52 -b 1000m -P 10

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iperf3 -c 192.168.0.52 -b 1000m -P 10 -R

BI66ER · Unread post by **BI66ER** » Sun Apr 21, 2019 4:31 am

OTG:

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[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -b 1000m -P 10
Connecting to host 192.168.0.52, port 5201
[  4] local 192.168.0.55 port 38112 connected to 192.168.0.52 port 5201
[  6] local 192.168.0.55 port 38114 connected to 192.168.0.52 port 5201
[  8] local 192.168.0.55 port 38116 connected to 192.168.0.52 port 5201
[ 10] local 192.168.0.55 port 38118 connected to 192.168.0.52 port 5201
[ 12] local 192.168.0.55 port 38120 connected to 192.168.0.52 port 5201
[ 14] local 192.168.0.55 port 38122 connected to 192.168.0.52 port 5201
[ 16] local 192.168.0.55 port 38124 connected to 192.168.0.52 port 5201
[ 18] local 192.168.0.55 port 38126 connected to 192.168.0.52 port 5201
[ 20] local 192.168.0.55 port 38128 connected to 192.168.0.52 port 5201
[ 22] local 192.168.0.55 port 38130 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.01   sec   274 KBytes  2.23 Mbits/sec    0   50.9 KBytes       
[  6]   0.00-1.01   sec   276 KBytes  2.24 Mbits/sec    0   50.9 KBytes       
[  8]   0.00-1.01   sec   229 KBytes  1.86 Mbits/sec    1   21.2 KBytes       
[ 10]   0.00-1.01   sec   180 KBytes  1.46 Mbits/sec    2   12.7 KBytes       
[ 12]   0.00-1.01   sec   233 KBytes  1.90 Mbits/sec    1   45.2 KBytes       
[ 14]   0.00-1.01   sec   230 KBytes  1.88 Mbits/sec    0   43.8 KBytes       
[ 16]   0.00-1.01   sec   235 KBytes  1.91 Mbits/sec    0   45.2 KBytes       
[ 18]   0.00-1.01   sec   225 KBytes  1.83 Mbits/sec    0   42.4 KBytes       
[ 20]   0.00-1.01   sec   222 KBytes  1.81 Mbits/sec    2   42.4 KBytes       
[ 22]   0.00-1.01   sec   230 KBytes  1.88 Mbits/sec    0   45.2 KBytes       
[SUM]   0.00-1.01   sec  2.28 MBytes  19.0 Mbits/sec    6             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   1.01-2.00   sec   116 KBytes   954 Kbits/sec    0   56.6 KBytes       
[  6]   1.01-2.00   sec  96.2 KBytes   791 Kbits/sec    1   12.7 KBytes       
[  8]   1.01-2.00   sec  80.6 KBytes   663 Kbits/sec    0   22.6 KBytes       
[ 10]   1.01-2.00   sec  73.5 KBytes   605 Kbits/sec    0   14.1 KBytes       
[ 12]   1.01-2.00   sec   112 KBytes   919 Kbits/sec    0   50.9 KBytes       
[ 14]   1.01-2.00   sec   116 KBytes   954 Kbits/sec    0   50.9 KBytes       
[ 16]   1.01-2.00   sec   110 KBytes   908 Kbits/sec    0   50.9 KBytes       
[ 18]   1.01-2.00   sec   122 KBytes  1.00 Mbits/sec    0   50.9 KBytes       
[ 20]   1.01-2.00   sec   146 KBytes  1.20 Mbits/sec    0   56.6 KBytes       
[ 22]   1.01-2.00   sec   136 KBytes  1.12 Mbits/sec    0   56.6 KBytes       
[SUM]   1.01-2.00   sec  1.08 MBytes  9.11 Mbits/sec    1             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   2.00-3.00   sec   136 KBytes  1.11 Mbits/sec    1   31.1 KBytes       
[  6]   2.00-3.00   sec   113 KBytes   928 Kbits/sec    0   28.3 KBytes       
[  8]   2.00-3.00   sec   120 KBytes   986 Kbits/sec    0   25.5 KBytes       
[ 10]   2.00-3.00   sec  86.3 KBytes   708 Kbits/sec    1   11.3 KBytes       
[ 12]   2.00-3.00   sec   140 KBytes  1.15 Mbits/sec    1   29.7 KBytes       
[ 14]   2.00-3.00   sec   192 KBytes  1.58 Mbits/sec    0   67.9 KBytes       
[ 16]   2.00-3.00   sec   151 KBytes  1.24 Mbits/sec    1   28.3 KBytes       
[ 18]   2.00-3.00   sec   192 KBytes  1.58 Mbits/sec    0   67.9 KBytes       
[ 20]   2.00-3.00   sec   148 KBytes  1.22 Mbits/sec    0   62.2 KBytes       
[ 22]   2.00-3.00   sec   141 KBytes  1.16 Mbits/sec    1   9.90 KBytes       
[SUM]   2.00-3.00   sec  1.39 MBytes  11.7 Mbits/sec    5             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   3.00-4.00   sec  60.8 KBytes   498 Kbits/sec    1   25.5 KBytes       
[  6]   3.00-4.00   sec  70.7 KBytes   579 Kbits/sec    0   29.7 KBytes       
[  8]   3.00-4.00   sec  72.1 KBytes   591 Kbits/sec    0   26.9 KBytes       
[ 10]   3.00-4.00   sec  67.9 KBytes   556 Kbits/sec    0   17.0 KBytes       
[ 12]   3.00-4.00   sec  73.5 KBytes   602 Kbits/sec    0   31.1 KBytes       
[ 14]   3.00-4.00   sec   127 KBytes  1.04 Mbits/sec    0   82.0 KBytes       
[ 16]   3.00-4.00   sec  72.1 KBytes   591 Kbits/sec    0   28.3 KBytes       
[ 18]   3.00-4.00   sec   130 KBytes  1.07 Mbits/sec    0   83.4 KBytes       
[ 20]   3.00-4.00   sec   123 KBytes  1.01 Mbits/sec    0   76.4 KBytes       
[ 22]   3.00-4.00   sec  84.8 KBytes   695 Kbits/sec    0   32.5 KBytes       
[SUM]   3.00-4.00   sec   882 KBytes  7.23 Mbits/sec    1             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.00-5.01   sec  91.9 KBytes   749 Kbits/sec    1   9.90 KBytes       
[  6]   4.00-5.01   sec  84.8 KBytes   692 Kbits/sec    3   7.07 KBytes       
[  8]   4.00-5.01   sec  80.6 KBytes   657 Kbits/sec    1   15.6 KBytes       
[ 10]   4.00-5.01   sec  74.9 KBytes   611 Kbits/sec    0   21.2 KBytes       
[ 12]   4.00-5.01   sec  93.3 KBytes   760 Kbits/sec    1   18.4 KBytes       
[ 14]   4.00-5.01   sec   520 KBytes  4.24 Mbits/sec    1   80.6 KBytes       
[ 16]   4.00-5.01   sec   129 KBytes  1.05 Mbits/sec    0   33.9 KBytes       
[ 18]   4.00-5.01   sec   396 KBytes  3.23 Mbits/sec    1   80.6 KBytes       
[ 20]   4.00-5.01   sec   510 KBytes  4.16 Mbits/sec    0    153 KBytes       
[ 22]   4.00-5.01   sec   107 KBytes   875 Kbits/sec    1   19.8 KBytes       
[SUM]   4.00-5.01   sec  2.04 MBytes  17.0 Mbits/sec    9             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.01-6.00   sec  52.3 KBytes   430 Kbits/sec    0   14.1 KBytes       
[  6]   5.01-6.00   sec  53.7 KBytes   442 Kbits/sec    0   12.7 KBytes       
[  8]   5.01-6.00   sec  60.8 KBytes   500 Kbits/sec    1   17.0 KBytes       
[ 10]   5.01-6.00   sec  82.0 KBytes   675 Kbits/sec    0   24.0 KBytes       
[ 12]   5.01-6.00   sec  72.1 KBytes   594 Kbits/sec    0   21.2 KBytes       
[ 14]   5.01-6.00   sec   201 KBytes  1.65 Mbits/sec    0   83.4 KBytes       
[ 16]   5.01-6.00   sec   103 KBytes   850 Kbits/sec    1   18.4 KBytes       
[ 18]   5.01-6.00   sec   150 KBytes  1.23 Mbits/sec    1   39.6 KBytes       
[ 20]   5.01-6.00   sec   117 KBytes   966 Kbits/sec    3   76.4 KBytes       
[ 22]   5.01-6.00   sec  58.0 KBytes   477 Kbits/sec    1   11.3 KBytes       
[SUM]   5.01-6.00   sec   950 KBytes  7.82 Mbits/sec    7             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.01   sec  72.1 KBytes   588 Kbits/sec    0   19.8 KBytes       
[  6]   6.00-7.01   sec  70.7 KBytes   577 Kbits/sec    0   18.4 KBytes       
[  8]   6.00-7.01   sec  90.5 KBytes   738 Kbits/sec    0   21.2 KBytes       
[ 10]   6.00-7.01   sec  97.6 KBytes   796 Kbits/sec    0   26.9 KBytes       
[ 12]   6.00-7.01   sec  90.5 KBytes   738 Kbits/sec    0   24.0 KBytes       
[ 14]   6.00-7.01   sec   105 KBytes   853 Kbits/sec    1   42.4 KBytes       
[ 16]   6.00-7.01   sec  74.9 KBytes   611 Kbits/sec    1   9.90 KBytes       
[ 18]   6.00-7.01   sec   127 KBytes  1.04 Mbits/sec    0   42.4 KBytes       
[ 20]   6.00-7.01   sec   153 KBytes  1.24 Mbits/sec    2   18.4 KBytes       
[ 22]   6.00-7.01   sec  66.5 KBytes   542 Kbits/sec    0   18.4 KBytes       
[SUM]   6.00-7.01   sec   947 KBytes  7.73 Mbits/sec    4             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.01-8.00   sec  52.3 KBytes   431 Kbits/sec    1   9.90 KBytes       
[  6]   7.01-8.00   sec  46.7 KBytes   384 Kbits/sec    1   9.90 KBytes       
[  8]   7.01-8.00   sec  39.6 KBytes   326 Kbits/sec    1   11.3 KBytes       
[ 10]   7.01-8.00   sec  53.7 KBytes   442 Kbits/sec    2   14.1 KBytes       
[ 12]   7.01-8.00   sec  48.1 KBytes   396 Kbits/sec    1   18.4 KBytes       
[ 14]   7.01-8.00   sec  63.6 KBytes   524 Kbits/sec    1   29.7 KBytes       
[ 16]   7.01-8.00   sec  33.9 KBytes   279 Kbits/sec    0   14.1 KBytes       
[ 18]   7.01-8.00   sec  60.8 KBytes   501 Kbits/sec    2   14.1 KBytes       
[ 20]   7.01-8.00   sec  49.5 KBytes   408 Kbits/sec    0   22.6 KBytes       
[ 22]   7.01-8.00   sec  38.2 KBytes   315 Kbits/sec    1   15.6 KBytes       
[SUM]   7.01-8.00   sec   486 KBytes  4.00 Mbits/sec   10             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.00-9.00   sec  74.9 KBytes   613 Kbits/sec    0   15.6 KBytes       
[  6]   8.00-9.00   sec  70.7 KBytes   578 Kbits/sec    0   15.6 KBytes       
[  8]   8.00-9.00   sec  80.6 KBytes   659 Kbits/sec    0   17.0 KBytes       
[ 10]   8.00-9.00   sec  96.2 KBytes   787 Kbits/sec    0   19.8 KBytes       
[ 12]   8.00-9.00   sec   107 KBytes   879 Kbits/sec    0   18.4 KBytes       
[ 14]   8.00-9.00   sec   133 KBytes  1.09 Mbits/sec    0   24.0 KBytes       
[ 16]   8.00-9.00   sec  86.3 KBytes   706 Kbits/sec    0   19.8 KBytes       
[ 18]   8.00-9.00   sec  87.7 KBytes   717 Kbits/sec    0   15.6 KBytes       
[ 20]   8.00-9.00   sec   115 KBytes   937 Kbits/sec    0   26.9 KBytes       
[ 22]   8.00-9.00   sec  90.5 KBytes   740 Kbits/sec    0   15.6 KBytes       
[SUM]   8.00-9.00   sec   942 KBytes  7.71 Mbits/sec    0             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  69.3 KBytes   569 Kbits/sec    0   17.0 KBytes       
[  6]   9.00-10.00  sec  66.5 KBytes   546 Kbits/sec    0   17.0 KBytes       
[  8]   9.00-10.00  sec  70.7 KBytes   580 Kbits/sec    0   18.4 KBytes       
[ 10]   9.00-10.00  sec  69.3 KBytes   569 Kbits/sec    0   21.2 KBytes       
[ 12]   9.00-10.00  sec  72.1 KBytes   592 Kbits/sec    0   19.8 KBytes       
[ 14]   9.00-10.00  sec  77.8 KBytes   639 Kbits/sec    0   25.5 KBytes       
[ 16]   9.00-10.00  sec  73.5 KBytes   604 Kbits/sec    0   21.2 KBytes       
[ 18]   9.00-10.00  sec  69.3 KBytes   569 Kbits/sec    0   17.0 KBytes       
[ 20]   9.00-10.00  sec  80.6 KBytes   662 Kbits/sec    0   28.3 KBytes       
[ 22]   9.00-10.00  sec  66.5 KBytes   546 Kbits/sec    0   17.0 KBytes       
[SUM]   9.00-10.00  sec   716 KBytes  5.87 Mbits/sec    0             
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1000 KBytes   819 Kbits/sec    4             sender
[  4]   0.00-10.00  sec   769 KBytes   630 Kbits/sec                  receiver
[  6]   0.00-10.00  sec   949 KBytes   777 Kbits/sec    5             sender
[  6]   0.00-10.00  sec   754 KBytes   617 Kbits/sec                  receiver
[  8]   0.00-10.00  sec   925 KBytes   758 Kbits/sec    4             sender
[  8]   0.00-10.00  sec   769 KBytes   630 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec   881 KBytes   722 Kbits/sec    5             sender
[ 10]   0.00-10.00  sec   766 KBytes   628 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec  1.02 MBytes   854 Kbits/sec    4             sender
[ 12]   0.00-10.00  sec   833 KBytes   682 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec  1.72 MBytes  1.45 Mbits/sec    3             sender
[ 14]   0.00-10.00  sec  1.14 MBytes   954 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec  1.04 MBytes   876 Kbits/sec    3             sender
[ 16]   0.00-10.00  sec   860 KBytes   704 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec  1.52 MBytes  1.28 Mbits/sec    4             sender
[ 18]   0.00-10.00  sec  1.02 MBytes   855 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec  1.63 MBytes  1.36 Mbits/sec    7             sender
[ 20]   0.00-10.00  sec  1.07 MBytes   897 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec  1020 KBytes   835 Kbits/sec    4             sender
[ 22]   0.00-10.00  sec   782 KBytes   641 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec  11.6 MBytes  9.73 Mbits/sec   43             sender
[SUM]   0.00-10.00  sec  8.63 MBytes  7.24 Mbits/sec                  receiver

OTG reverse:

Code: Select all

[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -b 1000m -P 10 -R
Connecting to host 192.168.0.52, port 5201
Reverse mode, remote host 192.168.0.52 is sending
[  4] local 192.168.0.55 port 38362 connected to 192.168.0.52 port 5201
[  6] local 192.168.0.55 port 38364 connected to 192.168.0.52 port 5201
[  8] local 192.168.0.55 port 38366 connected to 192.168.0.52 port 5201
[ 10] local 192.168.0.55 port 38368 connected to 192.168.0.52 port 5201
[ 12] local 192.168.0.55 port 38370 connected to 192.168.0.52 port 5201
[ 14] local 192.168.0.55 port 38372 connected to 192.168.0.52 port 5201
[ 16] local 192.168.0.55 port 38374 connected to 192.168.0.52 port 5201
[ 18] local 192.168.0.55 port 38376 connected to 192.168.0.52 port 5201
[ 20] local 192.168.0.55 port 38378 connected to 192.168.0.52 port 5201
[ 22] local 192.168.0.55 port 38380 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  91.9 KBytes   753 Kbits/sec                  
[  6]   0.00-1.00   sec  67.9 KBytes   556 Kbits/sec                  
[  8]   0.00-1.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 10]   0.00-1.00   sec  53.7 KBytes   440 Kbits/sec                  
[ 12]   0.00-1.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 14]   0.00-1.00   sec  53.7 KBytes   440 Kbits/sec                  
[ 16]   0.00-1.00   sec  52.3 KBytes   429 Kbits/sec                  
[ 18]   0.00-1.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 20]   0.00-1.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 22]   0.00-1.00   sec  48.1 KBytes   394 Kbits/sec                  
[SUM]   0.00-1.00   sec   577 KBytes  4.73 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   1.00-2.00   sec  46.7 KBytes   382 Kbits/sec                  
[  6]   1.00-2.00   sec  73.5 KBytes   602 Kbits/sec                  
[  8]   1.00-2.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   1.00-2.00   sec  59.4 KBytes   486 Kbits/sec                  
[ 12]   1.00-2.00   sec  59.4 KBytes   486 Kbits/sec                  
[ 14]   1.00-2.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 16]   1.00-2.00   sec  84.8 KBytes   695 Kbits/sec                  
[ 18]   1.00-2.00   sec  58.0 KBytes   475 Kbits/sec                  
[ 20]   1.00-2.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 22]   1.00-2.00   sec  56.6 KBytes   463 Kbits/sec                  
[SUM]   1.00-2.00   sec   605 KBytes  4.95 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   2.00-3.00   sec  60.8 KBytes   498 Kbits/sec                  
[  6]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec                  
[  8]   2.00-3.00   sec  66.5 KBytes   545 Kbits/sec                  
[ 10]   2.00-3.00   sec  67.9 KBytes   556 Kbits/sec                  
[ 12]   2.00-3.00   sec  63.6 KBytes   522 Kbits/sec                  
[ 14]   2.00-3.00   sec  66.5 KBytes   545 Kbits/sec                  
[ 16]   2.00-3.00   sec   106 KBytes   869 Kbits/sec                  
[ 18]   2.00-3.00   sec  63.6 KBytes   522 Kbits/sec                  
[ 20]   2.00-3.00   sec  73.5 KBytes   603 Kbits/sec                  
[ 22]   2.00-3.00   sec  73.5 KBytes   603 Kbits/sec                  
[SUM]   2.00-3.00   sec   693 KBytes  5.68 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   3.00-4.00   sec  59.4 KBytes   487 Kbits/sec                  
[  6]   3.00-4.00   sec  62.2 KBytes   510 Kbits/sec                  
[  8]   3.00-4.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   3.00-4.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 12]   3.00-4.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 14]   3.00-4.00   sec  53.7 KBytes   440 Kbits/sec                  
[ 16]   3.00-4.00   sec  89.1 KBytes   730 Kbits/sec                  
[ 18]   3.00-4.00   sec  58.0 KBytes   475 Kbits/sec                  
[ 20]   3.00-4.00   sec  60.8 KBytes   498 Kbits/sec                  
[ 22]   3.00-4.00   sec  60.8 KBytes   498 Kbits/sec                  
[SUM]   3.00-4.00   sec   611 KBytes  5.01 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.00-5.00   sec  53.7 KBytes   440 Kbits/sec                  
[  6]   4.00-5.00   sec  59.4 KBytes   487 Kbits/sec                  
[  8]   4.00-5.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 10]   4.00-5.00   sec  52.3 KBytes   429 Kbits/sec                  
[ 12]   4.00-5.00   sec  59.4 KBytes   487 Kbits/sec                  
[ 14]   4.00-5.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 16]   4.00-5.00   sec  72.1 KBytes   591 Kbits/sec                  
[ 18]   4.00-5.00   sec  49.5 KBytes   406 Kbits/sec                  
[ 20]   4.00-5.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 22]   4.00-5.00   sec  56.6 KBytes   463 Kbits/sec                  
[SUM]   4.00-5.00   sec   561 KBytes  4.60 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.00-6.00   sec  56.6 KBytes   463 Kbits/sec                  
[  6]   5.00-6.00   sec  70.7 KBytes   579 Kbits/sec                  
[  8]   5.00-6.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   5.00-6.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 12]   5.00-6.00   sec  49.5 KBytes   405 Kbits/sec                  
[ 14]   5.00-6.00   sec  48.1 KBytes   394 Kbits/sec                  
[ 16]   5.00-6.00   sec  67.9 KBytes   556 Kbits/sec                  
[ 18]   5.00-6.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 20]   5.00-6.00   sec  52.3 KBytes   429 Kbits/sec                  
[ 22]   5.00-6.00   sec  56.6 KBytes   463 Kbits/sec                  
[SUM]   5.00-6.00   sec   567 KBytes  4.65 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.00   sec  62.2 KBytes   510 Kbits/sec                  
[  6]   6.00-7.00   sec  42.4 KBytes   348 Kbits/sec                  
[  8]   6.00-7.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   6.00-7.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 12]   6.00-7.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 14]   6.00-7.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 16]   6.00-7.00   sec  62.2 KBytes   510 Kbits/sec                  
[ 18]   6.00-7.00   sec  49.5 KBytes   405 Kbits/sec                  
[ 20]   6.00-7.00   sec  65.0 KBytes   533 Kbits/sec                  
[ 22]   6.00-7.00   sec  46.7 KBytes   382 Kbits/sec                  
[SUM]   6.00-7.00   sec   542 KBytes  4.44 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.00-8.00   sec  50.9 KBytes   417 Kbits/sec                  
[  6]   7.00-8.00   sec  79.2 KBytes   648 Kbits/sec                  
[  8]   7.00-8.00   sec  53.7 KBytes   440 Kbits/sec                  
[ 10]   7.00-8.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 12]   7.00-8.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 14]   7.00-8.00   sec  49.5 KBytes   405 Kbits/sec                  
[ 16]   7.00-8.00   sec  58.0 KBytes   475 Kbits/sec                  
[ 18]   7.00-8.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 20]   7.00-8.00   sec  35.4 KBytes   289 Kbits/sec                  
[ 22]   7.00-8.00   sec  56.6 KBytes   463 Kbits/sec                  
[SUM]   7.00-8.00   sec   550 KBytes  4.50 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.00-9.00   sec  53.7 KBytes   440 Kbits/sec                  
[  6]   8.00-9.00   sec  43.8 KBytes   359 Kbits/sec                  
[  8]   8.00-9.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   8.00-9.00   sec  50.9 KBytes   417 Kbits/sec                  
[ 12]   8.00-9.00   sec  53.7 KBytes   440 Kbits/sec                  
[ 14]   8.00-9.00   sec  58.0 KBytes   475 Kbits/sec                  
[ 16]   8.00-9.00   sec  63.6 KBytes   521 Kbits/sec                  
[ 18]   8.00-9.00   sec  59.4 KBytes   487 Kbits/sec                  
[ 20]   8.00-9.00   sec  62.2 KBytes   510 Kbits/sec                  
[ 22]   8.00-9.00   sec  50.9 KBytes   417 Kbits/sec                  
[SUM]   8.00-9.00   sec   551 KBytes  4.52 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  79.2 KBytes   648 Kbits/sec                  
[  6]   9.00-10.00  sec  59.4 KBytes   486 Kbits/sec                  
[  8]   9.00-10.00  sec  48.1 KBytes   394 Kbits/sec                  
[ 10]   9.00-10.00  sec  38.2 KBytes   313 Kbits/sec                  
[ 12]   9.00-10.00  sec  25.5 KBytes   208 Kbits/sec                  
[ 14]   9.00-10.00  sec  59.4 KBytes   486 Kbits/sec                  
[ 16]   9.00-10.00  sec  58.0 KBytes   475 Kbits/sec                  
[ 18]   9.00-10.00  sec  43.8 KBytes   359 Kbits/sec                  
[ 20]   9.00-10.00  sec  63.6 KBytes   521 Kbits/sec                  
[ 22]   9.00-10.00  sec  52.3 KBytes   429 Kbits/sec                  
[SUM]   9.00-10.00  sec   527 KBytes  4.32 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   970 KBytes   795 Kbits/sec    0             sender
[  4]   0.00-10.00  sec   615 KBytes   504 Kbits/sec                  receiver
[  6]   0.00-10.00  sec   956 KBytes   783 Kbits/sec    0             sender
[  6]   0.00-10.00  sec   737 KBytes   604 Kbits/sec                  receiver
[  8]   0.00-10.00  sec   904 KBytes   741 Kbits/sec    0             sender
[  8]   0.00-10.00  sec   679 KBytes   557 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec   901 KBytes   738 Kbits/sec    0             sender
[ 10]   0.00-10.00  sec   540 KBytes   442 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec   892 KBytes   731 Kbits/sec    0             sender
[ 12]   0.00-10.00  sec   653 KBytes   535 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec   902 KBytes   739 Kbits/sec    0             sender
[ 14]   0.00-10.00  sec   557 KBytes   456 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec  1.08 MBytes   905 Kbits/sec    0             sender
[ 16]   0.00-10.00  sec   842 KBytes   690 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec   887 KBytes   727 Kbits/sec    0             sender
[ 18]   0.00-10.00  sec   543 KBytes   445 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec   913 KBytes   748 Kbits/sec    0             sender
[ 20]   0.00-10.00  sec   571 KBytes   468 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec   902 KBytes   739 Kbits/sec    0             sender
[ 22]   0.00-10.00  sec   559 KBytes   458 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec  9.11 MBytes  7.65 Mbits/sec    0             sender
[SUM]   0.00-10.00  sec  6.15 MBytes  5.16 Mbits/sec                  receiver

USB3:

Code: Select all

[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -b 1000m -P 10
Connecting to host 192.168.0.52, port 5201
[  4] local 192.168.0.55 port 38392 connected to 192.168.0.52 port 5201
[  6] local 192.168.0.55 port 38394 connected to 192.168.0.52 port 5201
[  8] local 192.168.0.55 port 38396 connected to 192.168.0.52 port 5201
[ 10] local 192.168.0.55 port 38398 connected to 192.168.0.52 port 5201
[ 12] local 192.168.0.55 port 38400 connected to 192.168.0.52 port 5201
[ 14] local 192.168.0.55 port 38402 connected to 192.168.0.52 port 5201
[ 16] local 192.168.0.55 port 38404 connected to 192.168.0.52 port 5201
[ 18] local 192.168.0.55 port 38406 connected to 192.168.0.52 port 5201
[ 20] local 192.168.0.55 port 38408 connected to 192.168.0.52 port 5201
[ 22] local 192.168.0.55 port 38410 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  62.2 KBytes   509 Kbits/sec    1   14.1 KBytes       
[  6]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    1   14.1 KBytes       
[  8]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    1   14.1 KBytes       
[ 10]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    0   14.1 KBytes       
[ 12]   0.00-1.00   sec  60.8 KBytes   498 Kbits/sec    1   14.1 KBytes       
[ 14]   0.00-1.00   sec  60.8 KBytes   498 Kbits/sec    0   14.1 KBytes       
[ 16]   0.00-1.00   sec  53.7 KBytes   440 Kbits/sec    1   9.90 KBytes       
[ 18]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    1   14.1 KBytes       
[ 20]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    1   14.1 KBytes       
[ 22]   0.00-1.00   sec  59.4 KBytes   486 Kbits/sec    1   14.1 KBytes       
[SUM]   0.00-1.00   sec   594 KBytes  4.86 Mbits/sec    8             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   1.00-2.00   sec  2.83 KBytes  23.2 Kbits/sec    1   8.48 KBytes       
[  6]   1.00-2.00   sec  2.83 KBytes  23.2 Kbits/sec    3   7.07 KBytes       
[  8]   1.00-2.00   sec  4.24 KBytes  34.8 Kbits/sec    2   7.07 KBytes       
[ 10]   1.00-2.00   sec  12.7 KBytes   104 Kbits/sec    2   7.07 KBytes       
[ 12]   1.00-2.00   sec  5.66 KBytes  46.4 Kbits/sec    1   5.66 KBytes       
[ 14]   1.00-2.00   sec  5.66 KBytes  46.4 Kbits/sec    1   5.66 KBytes       
[ 16]   1.00-2.00   sec  17.0 KBytes   139 Kbits/sec    0   7.07 KBytes       
[ 18]   1.00-2.00   sec  14.1 KBytes   116 Kbits/sec    0   14.1 KBytes       
[ 20]   1.00-2.00   sec  5.66 KBytes  46.4 Kbits/sec    1   9.90 KBytes       
[ 22]   1.00-2.00   sec  8.48 KBytes  69.5 Kbits/sec    0   14.1 KBytes       
[SUM]   1.00-2.00   sec  79.2 KBytes   649 Kbits/sec   11             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   2.00-3.00   sec  4.24 KBytes  34.8 Kbits/sec    2   7.07 KBytes       
[  6]   2.00-3.00   sec  17.0 KBytes   139 Kbits/sec    0   7.07 KBytes       
[  8]   2.00-3.00   sec  14.1 KBytes   116 Kbits/sec    0   7.07 KBytes       
[ 10]   2.00-3.00   sec  9.90 KBytes  81.1 Kbits/sec    0   7.07 KBytes       
[ 12]   2.00-3.00   sec  19.8 KBytes   162 Kbits/sec    0   8.48 KBytes       
[ 14]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec    1   4.24 KBytes       
[ 16]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec    2   2.83 KBytes       
[ 18]   2.00-3.00   sec  22.6 KBytes   185 Kbits/sec    0   15.6 KBytes       
[ 20]   2.00-3.00   sec  7.07 KBytes  57.9 Kbits/sec    1   7.07 KBytes       
[ 22]   2.00-3.00   sec  17.0 KBytes   139 Kbits/sec    0   15.6 KBytes       
[SUM]   2.00-3.00   sec   112 KBytes   915 Kbits/sec    6             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   3.00-4.00   sec  21.2 KBytes   174 Kbits/sec    1   7.07 KBytes       
[  6]   3.00-4.00   sec  9.90 KBytes  81.1 Kbits/sec    0   8.48 KBytes       
[  8]   3.00-4.00   sec  9.90 KBytes  81.1 Kbits/sec    1   2.83 KBytes       
[ 10]   3.00-4.00   sec  9.90 KBytes  81.1 Kbits/sec    1   2.83 KBytes       
[ 12]   3.00-4.00   sec  12.7 KBytes   104 Kbits/sec    2   4.24 KBytes       
[ 14]   3.00-4.00   sec  22.6 KBytes   185 Kbits/sec    0   8.48 KBytes       
[ 16]   3.00-4.00   sec  11.3 KBytes  92.6 Kbits/sec    0   4.24 KBytes       
[ 18]   3.00-4.00   sec  7.07 KBytes  57.9 Kbits/sec    2   7.07 KBytes       
[ 20]   3.00-4.00   sec  18.4 KBytes   151 Kbits/sec    0   8.48 KBytes       
[ 22]   3.00-4.00   sec  15.6 KBytes   127 Kbits/sec    3   7.07 KBytes       
[SUM]   3.00-4.00   sec   139 KBytes  1.13 Mbits/sec   10             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.00-5.00   sec  8.48 KBytes  69.5 Kbits/sec    1   5.66 KBytes       
[  6]   4.00-5.00   sec  1.41 KBytes  11.6 Kbits/sec    2   4.24 KBytes       
[  8]   4.00-5.00   sec  4.24 KBytes  34.8 Kbits/sec    0   4.24 KBytes       
[ 10]   4.00-5.00   sec  7.07 KBytes  58.0 Kbits/sec    0   5.66 KBytes       
[ 12]   4.00-5.00   sec  4.24 KBytes  34.8 Kbits/sec    0   4.24 KBytes       
[ 14]   4.00-5.00   sec  11.3 KBytes  92.7 Kbits/sec    1   4.24 KBytes       
[ 16]   4.00-5.00   sec  4.24 KBytes  34.8 Kbits/sec    1   4.24 KBytes       
[ 18]   4.00-5.00   sec  21.2 KBytes   174 Kbits/sec    1   7.07 KBytes       
[ 20]   4.00-5.00   sec  7.07 KBytes  58.0 Kbits/sec    2   4.24 KBytes       
[ 22]   4.00-5.00   sec  21.2 KBytes   174 Kbits/sec    0   8.48 KBytes       
[SUM]   4.00-5.00   sec  90.5 KBytes   742 Kbits/sec    8             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.00-6.00   sec  14.1 KBytes   116 Kbits/sec    1   4.24 KBytes       
[  6]   5.00-6.00   sec  17.0 KBytes   139 Kbits/sec    0   7.07 KBytes       
[  8]   5.00-6.00   sec  7.07 KBytes  57.9 Kbits/sec    1   2.83 KBytes       
[ 10]   5.00-6.00   sec  11.3 KBytes  92.7 Kbits/sec    0   8.48 KBytes       
[ 12]   5.00-6.00   sec  9.90 KBytes  81.1 Kbits/sec    0   7.07 KBytes       
[ 14]   5.00-6.00   sec  12.7 KBytes   104 Kbits/sec    0   7.07 KBytes       
[ 16]   5.00-6.00   sec  11.3 KBytes  92.7 Kbits/sec    0   4.24 KBytes       
[ 18]   5.00-6.00   sec  4.24 KBytes  34.7 Kbits/sec    1   2.83 KBytes       
[ 20]   5.00-6.00   sec  7.07 KBytes  57.9 Kbits/sec    1   4.24 KBytes       
[ 22]   5.00-6.00   sec  18.4 KBytes   151 Kbits/sec    0   11.3 KBytes       
[SUM]   5.00-6.00   sec   113 KBytes   927 Kbits/sec    4             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.00   sec  9.90 KBytes  81.1 Kbits/sec    0   7.07 KBytes       
[  6]   6.00-7.00   sec  7.07 KBytes  57.9 Kbits/sec    2   2.83 KBytes       
[  8]   6.00-7.00   sec  5.66 KBytes  46.3 Kbits/sec    0   5.66 KBytes       
[ 10]   6.00-7.00   sec  11.3 KBytes  92.7 Kbits/sec    1   4.24 KBytes       
[ 12]   6.00-7.00   sec  17.0 KBytes   139 Kbits/sec    0   9.90 KBytes       
[ 14]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec    2   2.83 KBytes       
[ 16]   6.00-7.00   sec  9.90 KBytes  81.1 Kbits/sec    0   7.07 KBytes       
[ 18]   6.00-7.00   sec  17.0 KBytes   139 Kbits/sec    0   5.66 KBytes       
[ 20]   6.00-7.00   sec  11.3 KBytes  92.7 Kbits/sec    0   4.24 KBytes       
[ 22]   6.00-7.00   sec  11.3 KBytes  92.7 Kbits/sec    2   5.66 KBytes       
[SUM]   6.00-7.00   sec   100 KBytes   823 Kbits/sec    7             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.00-8.00   sec  15.6 KBytes   127 Kbits/sec    0   9.90 KBytes       
[  6]   7.00-8.00   sec  8.48 KBytes  69.5 Kbits/sec    0   5.66 KBytes       
[  8]   7.00-8.00   sec  8.48 KBytes  69.5 Kbits/sec    1   2.83 KBytes       
[ 10]   7.00-8.00   sec  9.90 KBytes  81.1 Kbits/sec    0   7.07 KBytes       
[ 12]   7.00-8.00   sec  25.5 KBytes   208 Kbits/sec    1   9.90 KBytes       
[ 14]   7.00-8.00   sec  8.48 KBytes  69.5 Kbits/sec    1   2.83 KBytes       
[ 16]   7.00-8.00   sec  15.6 KBytes   127 Kbits/sec    0   9.90 KBytes       
[ 18]   7.00-8.00   sec  1.41 KBytes  11.6 Kbits/sec    2   2.83 KBytes       
[ 20]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec    1   2.83 KBytes       
[ 22]   7.00-8.00   sec  24.0 KBytes   197 Kbits/sec    0   7.07 KBytes       
[SUM]   7.00-8.00   sec   117 KBytes   961 Kbits/sec    6             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.00-9.00   sec  21.2 KBytes   174 Kbits/sec    0   12.7 KBytes       
[  6]   8.00-9.00   sec  12.7 KBytes   104 Kbits/sec    0   8.48 KBytes       
[  8]   8.00-9.00   sec  4.24 KBytes  34.7 Kbits/sec    0   4.24 KBytes       
[ 10]   8.00-9.00   sec  8.48 KBytes  69.5 Kbits/sec    1   5.66 KBytes       
[ 12]   8.00-9.00   sec  17.0 KBytes   139 Kbits/sec    1   5.66 KBytes       
[ 14]   8.00-9.00   sec  7.07 KBytes  57.9 Kbits/sec    0   5.66 KBytes       
[ 16]   8.00-9.00   sec  21.2 KBytes   174 Kbits/sec    0   12.7 KBytes       
[ 18]   8.00-9.00   sec  9.90 KBytes  81.0 Kbits/sec    0   4.24 KBytes       
[ 20]   8.00-9.00   sec  12.7 KBytes   104 Kbits/sec    0   5.66 KBytes       
[ 22]   8.00-9.00   sec  9.90 KBytes  81.0 Kbits/sec    1   2.83 KBytes       
[SUM]   8.00-9.00   sec   124 KBytes  1.02 Mbits/sec    3             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  11.3 KBytes  92.7 Kbits/sec    0   14.1 KBytes       
[  6]   9.00-10.00  sec  8.48 KBytes  69.5 Kbits/sec    0   9.90 KBytes       
[  8]   9.00-10.00  sec  1.41 KBytes  11.6 Kbits/sec    2   2.83 KBytes       
[ 10]   9.00-10.00  sec  9.90 KBytes  81.1 Kbits/sec    1   4.24 KBytes       
[ 12]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec    1   4.24 KBytes       
[ 14]   9.00-10.00  sec  5.66 KBytes  46.4 Kbits/sec    0   7.07 KBytes       
[ 16]   9.00-10.00  sec  11.3 KBytes  92.7 Kbits/sec    0   14.1 KBytes       
[ 18]   9.00-10.00  sec  2.83 KBytes  23.2 Kbits/sec    0   5.66 KBytes       
[ 20]   9.00-10.00  sec  5.66 KBytes  46.4 Kbits/sec    0   7.07 KBytes       
[ 22]   9.00-10.00  sec  2.83 KBytes  23.2 Kbits/sec    0   4.24 KBytes       
[SUM]   9.00-10.00  sec  59.4 KBytes   487 Kbits/sec    4             
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   171 KBytes   140 Kbits/sec    7             sender
[  4]   0.00-10.00  sec   122 KBytes  99.6 Kbits/sec                  receiver
[  6]   0.00-10.00  sec   144 KBytes   118 Kbits/sec    8             sender
[  6]   0.00-10.00  sec   100 KBytes  82.2 Kbits/sec                  receiver
[  8]   0.00-10.00  sec   119 KBytes  97.3 Kbits/sec    8             sender
[  8]   0.00-10.00  sec  69.3 KBytes  56.8 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec   150 KBytes   123 Kbits/sec    6             sender
[ 10]   0.00-10.00  sec  99.0 KBytes  81.1 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec   173 KBytes   141 Kbits/sec    7             sender
[ 12]   0.00-10.00  sec   120 KBytes  98.5 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec   134 KBytes   110 Kbits/sec    6             sender
[ 14]   0.00-10.00  sec  87.7 KBytes  71.8 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec   156 KBytes   127 Kbits/sec    4             sender
[ 16]   0.00-10.00  sec   116 KBytes  95.0 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec   160 KBytes   131 Kbits/sec    7             sender
[ 18]   0.00-10.00  sec   106 KBytes  86.9 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec   134 KBytes   110 Kbits/sec    7             sender
[ 20]   0.00-10.00  sec  87.7 KBytes  71.8 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec   188 KBytes   154 Kbits/sec    7             sender
[ 22]   0.00-10.00  sec   129 KBytes   105 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec  1.49 MBytes  1.25 Mbits/sec   67             sender
[SUM]   0.00-10.00  sec  1.01 MBytes   849 Kbits/sec                  receiver

iperf Done.

USB3 reverse:

Code: Select all

[odroid@odroid]:/usr/local$ iperf3 -c 192.168.0.52 -b 1000m -P 10 -R
Connecting to host 192.168.0.52, port 5201
Reverse mode, remote host 192.168.0.52 is sending
[  4] local 192.168.0.55 port 38426 connected to 192.168.0.52 port 5201
[  6] local 192.168.0.55 port 38428 connected to 192.168.0.52 port 5201
[  8] local 192.168.0.55 port 38430 connected to 192.168.0.52 port 5201
[ 10] local 192.168.0.55 port 38432 connected to 192.168.0.52 port 5201
[ 12] local 192.168.0.55 port 38434 connected to 192.168.0.52 port 5201
[ 14] local 192.168.0.55 port 38436 connected to 192.168.0.52 port 5201
[ 16] local 192.168.0.55 port 38438 connected to 192.168.0.52 port 5201
[ 18] local 192.168.0.55 port 38440 connected to 192.168.0.52 port 5201
[ 20] local 192.168.0.55 port 38442 connected to 192.168.0.52 port 5201
[ 22] local 192.168.0.55 port 38444 connected to 192.168.0.52 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[  6]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[  8]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[ 10]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[ 12]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[ 14]   0.00-4.13   sec  14.1 KBytes  28.1 Kbits/sec                  
[ 16]   0.00-4.13   sec  15.6 KBytes  30.9 Kbits/sec                  
[ 18]   0.00-4.13   sec  14.1 KBytes  28.1 Kbits/sec                  
[ 20]   0.00-4.13   sec  12.7 KBytes  25.3 Kbits/sec                  
[ 22]   0.00-4.13   sec  14.1 KBytes  28.1 Kbits/sec                  
[SUM]   0.00-4.13   sec   148 KBytes   295 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 20]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 22]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 20]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 22]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 20]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[ 22]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   4.13-4.13   sec  0.00 Bytes  0.00 bits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   4.13-5.00   sec  1.41 KBytes  13.3 Kbits/sec                  
[  8]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 20]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 22]   4.13-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   4.13-5.00   sec  1.41 KBytes  13.3 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   5.00-6.00   sec  4.24 KBytes  34.8 Kbits/sec                  
[ 16]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   5.00-6.00   sec  5.66 KBytes  46.4 Kbits/sec                  
[ 20]   5.00-6.00   sec  4.24 KBytes  34.8 Kbits/sec                  
[ 22]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   5.00-6.00   sec  14.1 KBytes   116 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 20]   6.00-7.00   sec  1.41 KBytes  11.6 Kbits/sec                  
[ 22]   6.00-7.00   sec  29.7 KBytes   243 Kbits/sec                  
[SUM]   6.00-7.00   sec  31.1 KBytes   254 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   7.00-8.00   sec  1.41 KBytes  11.6 Kbits/sec                  
[  8]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   7.00-8.00   sec  2.83 KBytes  23.2 Kbits/sec                  
[ 12]   7.00-8.00   sec  5.66 KBytes  46.4 Kbits/sec                  
[ 14]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 16]   7.00-8.00   sec  1.41 KBytes  11.6 Kbits/sec                  
[ 18]   7.00-8.00   sec  1.41 KBytes  11.6 Kbits/sec                  
[ 20]   7.00-8.00   sec  5.66 KBytes  46.4 Kbits/sec                  
[ 22]   7.00-8.00   sec  2.83 KBytes  23.2 Kbits/sec                  
[SUM]   7.00-8.00   sec  21.2 KBytes   174 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[  6]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[  8]   8.00-9.00   sec  2.83 KBytes  23.2 Kbits/sec                  
[ 10]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   8.00-9.00   sec  4.24 KBytes  34.8 Kbits/sec                  
[ 16]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   8.00-9.00   sec  8.48 KBytes  69.5 Kbits/sec                  
[ 20]   8.00-9.00   sec  22.6 KBytes   185 Kbits/sec                  
[ 22]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec                  
[SUM]   8.00-9.00   sec  38.2 KBytes   313 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[  6]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[  8]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[ 10]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[ 12]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[ 14]   9.00-10.00  sec  4.24 KBytes  34.7 Kbits/sec                  
[ 16]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec                  
[ 18]   9.00-10.00  sec  14.1 KBytes   116 Kbits/sec                  
[ 20]   9.00-10.00  sec  4.24 KBytes  34.7 Kbits/sec                  
[ 22]   9.00-10.00  sec  2.83 KBytes  23.1 Kbits/sec                  
[SUM]   9.00-10.00  sec  25.5 KBytes   208 Kbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  77.8 KBytes  63.7 Kbits/sec    6             sender
[  4]   0.00-10.00  sec  77.8 KBytes  63.7 Kbits/sec                  receiver
[  6]   0.00-10.00  sec  74.9 KBytes  61.4 Kbits/sec    2             sender
[  6]   0.00-10.00  sec  18.4 KBytes  15.1 Kbits/sec                  receiver
[  8]   0.00-10.00  sec  74.9 KBytes  61.4 Kbits/sec    5             sender
[  8]   0.00-10.00  sec  18.4 KBytes  15.1 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec  72.1 KBytes  59.1 Kbits/sec    6             sender
[ 10]   0.00-10.00  sec  18.4 KBytes  15.1 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec  77.8 KBytes  63.7 Kbits/sec    7             sender
[ 12]   0.00-10.00  sec  21.2 KBytes  17.4 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec  83.4 KBytes  68.3 Kbits/sec   17             sender
[ 14]   0.00-10.00  sec  26.9 KBytes  22.0 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec  69.3 KBytes  56.8 Kbits/sec    2             sender
[ 16]   0.00-10.00  sec  17.0 KBytes  13.9 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec   100 KBytes  82.2 Kbits/sec   13             sender
[ 18]   0.00-10.00  sec  43.8 KBytes  35.9 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec   103 KBytes  84.6 Kbits/sec   10             sender
[ 20]   0.00-10.00  sec  50.9 KBytes  41.7 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec   102 KBytes  83.4 Kbits/sec    9             sender
[ 22]   0.00-10.00  sec  49.5 KBytes  40.5 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec   836 KBytes   685 Kbits/sec   77             sender
[SUM]   0.00-10.00  sec   342 KBytes   280 Kbits/sec                  receiver

BI66ER · Unread post by **BI66ER** » Sun Apr 21, 2019 12:24 pm

The stability of the connection honestly seems weak with either OTG or USB3. Removing and re adding the rtl8192cu driver gives very temporary bump in speed. I have the day off so ...

Using the following bit of python using the iperf3 module and some other code I reused from another project of mine, I began logging iperf3 data once per minute:

Code: Select all

""" iperf3.py """
import iperf3

# BEGIN IPERF3 test
client = iperf3.Client()
client.duration = 5
client.num_streams = 10
client.bandwidth = 1000000000 # Target bandwidth in bits/sec
client.server_hostname = '192.168.0.52'
client.port = 5201
result = client.run()

print(result.sent_Mbps)
print(result.received_Mbps)

clientR = iperf3.Client()
clientR.reverse = True
clientR.duration = 5
clientR.num_streams = 10
clientR.bandwidth = 1000000000 # Target bandwidth in bits/sec
clientR.server_hostname = '192.168.0.52'
clientR.port = 5201
resultR = clientR.run()

print(resultR.sent_Mbps)
print(resultR.received_Mbps)
# END IPERF3 test

tobetter · Unread post by **tobetter** » Mon Apr 22, 2019 1:45 pm

@BI66ER, I've performed the same script and having a similar result I've done earlier. My test case is not low like yours.
Do you have any other USB devices connected to ODROID-N2?
What does lsusb -t say on your ODROID-N2?

EDIT:
I've read many articles regarding the interference of USB 3.0 to 2.4GHz devices.
https://superuser.com/questions/1282590 ... hz-devices

Since I see a USB 3.0 device from your previous post, would you please remove all USB devices and test iperf3 again?

Code: Select all

Bus 001 Device 007: ID 0480:a006 Toshiba America Inc External Disk 1.5TB

BI66ER · Unread post by **BI66ER** » Sat Apr 27, 2019 6:35 am

So I have kind of solved my problem. The USB portable hard drive I had plugged in was somehow interfering with my wifi, whether or not it was plugged directly in or via external powered hub.

I tried meverics repository for the n2/n1 with alternative kernel, there is also a wifi driver fix in the repo which I installed. That seemed to get me the best speeds, although I did not document it. I have since returned to the default kernel provided by odroid, with no driver fixes.

my current iperf with Linux 4.9.170-25, default rtl8192cu and no hard drive:

Code: Select all

[odroid@odroid]:~$ iperf3 -c 192.168.0.52 -b 1000m -P 10 -R
Connecting to host 192.168.0.52, port 5201
Reverse mode, remote host 192.168.0.52 is sending

[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  58.0 KBytes   473 Kbits/sec                  
[  6]   0.00-1.00   sec  60.8 KBytes   496 Kbits/sec                  
[  8]   0.00-1.00   sec  48.1 KBytes   392 Kbits/sec                  
[ 10]   0.00-1.00   sec  60.8 KBytes   496 Kbits/sec                  
[ 12]   0.00-1.00   sec  60.8 KBytes   496 Kbits/sec                  
[ 14]   0.00-1.00   sec  59.4 KBytes   484 Kbits/sec                  
[ 16]   0.00-1.00   sec  60.8 KBytes   496 Kbits/sec                  
[ 18]   0.00-1.00   sec  59.4 KBytes   484 Kbits/sec                  
[ 20]   0.00-1.00   sec  55.1 KBytes   450 Kbits/sec                  
[ 22]   0.00-1.00   sec  56.6 KBytes   461 Kbits/sec                  
[SUM]   0.00-1.00   sec   580 KBytes  4.73 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   1.00-2.00   sec  62.2 KBytes   512 Kbits/sec                  
[  6]   1.00-2.00   sec  76.4 KBytes   628 Kbits/sec                  
[  8]   1.00-2.00   sec  58.0 KBytes   477 Kbits/sec                  
[ 10]   1.00-2.00   sec  79.2 KBytes   651 Kbits/sec                  
[ 12]   1.00-2.00   sec  77.8 KBytes   640 Kbits/sec                  
[ 14]   1.00-2.00   sec  79.2 KBytes   651 Kbits/sec                  
[ 16]   1.00-2.00   sec  69.3 KBytes   570 Kbits/sec                  
[ 18]   1.00-2.00   sec  79.2 KBytes   651 Kbits/sec                  
[ 20]   1.00-2.00   sec  52.3 KBytes   430 Kbits/sec                  
[ 22]   1.00-2.00   sec  79.2 KBytes   651 Kbits/sec                  
[SUM]   1.00-2.00   sec   713 KBytes  5.86 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   2.00-3.00   sec  52.3 KBytes   429 Kbits/sec                  
[  6]   2.00-3.00   sec  56.6 KBytes   463 Kbits/sec                  
[  8]   2.00-3.00   sec  55.1 KBytes   452 Kbits/sec                  
[ 10]   2.00-3.00   sec  69.3 KBytes   568 Kbits/sec                  
[ 12]   2.00-3.00   sec  87.7 KBytes   718 Kbits/sec                  
[ 14]   2.00-3.00   sec  77.8 KBytes   637 Kbits/sec                  
[ 16]   2.00-3.00   sec  62.2 KBytes   510 Kbits/sec                  
[ 18]   2.00-3.00   sec  77.8 KBytes   637 Kbits/sec                  
[ 20]   2.00-3.00   sec  46.7 KBytes   382 Kbits/sec                  
[ 22]   2.00-3.00   sec  72.1 KBytes   591 Kbits/sec                  
[SUM]   2.00-3.00   sec   658 KBytes  5.39 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   3.00-4.00   sec  21.2 KBytes   174 Kbits/sec                  
[  6]   3.00-4.00   sec  28.3 KBytes   232 Kbits/sec                  
[  8]   3.00-4.00   sec  29.7 KBytes   243 Kbits/sec                  
[ 10]   3.00-4.00   sec  24.0 KBytes   197 Kbits/sec                  
[ 12]   3.00-4.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 14]   3.00-4.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 16]   3.00-4.00   sec  26.9 KBytes   220 Kbits/sec                  
[ 18]   3.00-4.00   sec  38.2 KBytes   313 Kbits/sec                  
[ 20]   3.00-4.00   sec  38.2 KBytes   313 Kbits/sec                  
[ 22]   3.00-4.00   sec  36.8 KBytes   301 Kbits/sec                  
[SUM]   3.00-4.00   sec   314 KBytes  2.57 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.00-5.00   sec  52.3 KBytes   429 Kbits/sec                  
[  6]   4.00-5.00   sec  42.4 KBytes   348 Kbits/sec                  
[  8]   4.00-5.00   sec  32.5 KBytes   266 Kbits/sec                  
[ 10]   4.00-5.00   sec  80.6 KBytes   660 Kbits/sec                  
[ 12]   4.00-5.00   sec  76.4 KBytes   626 Kbits/sec                  
[ 14]   4.00-5.00   sec  72.1 KBytes   591 Kbits/sec                  
[ 16]   4.00-5.00   sec  39.6 KBytes   324 Kbits/sec                  
[ 18]   4.00-5.00   sec  76.4 KBytes   626 Kbits/sec                  
[ 20]   4.00-5.00   sec  65.0 KBytes   533 Kbits/sec                  
[ 22]   4.00-5.00   sec  67.9 KBytes   556 Kbits/sec                  
[SUM]   4.00-5.00   sec   605 KBytes  4.96 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.00-6.00   sec  14.1 KBytes   116 Kbits/sec                  
[  6]   5.00-6.00   sec  24.0 KBytes   197 Kbits/sec                  
[  8]   5.00-6.00   sec  22.6 KBytes   185 Kbits/sec                  
[ 10]   5.00-6.00   sec  32.5 KBytes   266 Kbits/sec                  
[ 12]   5.00-6.00   sec  29.7 KBytes   243 Kbits/sec                  
[ 14]   5.00-6.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 16]   5.00-6.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 18]   5.00-6.00   sec  39.6 KBytes   324 Kbits/sec                  
[ 20]   5.00-6.00   sec  31.1 KBytes   255 Kbits/sec                  
[ 22]   5.00-6.00   sec  43.8 KBytes   359 Kbits/sec                  
[SUM]   5.00-6.00   sec   308 KBytes  2.53 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.00   sec  19.8 KBytes   162 Kbits/sec                  
[  6]   6.00-7.00   sec  39.6 KBytes   324 Kbits/sec                  
[  8]   6.00-7.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 10]   6.00-7.00   sec  29.7 KBytes   243 Kbits/sec                  
[ 12]   6.00-7.00   sec  25.5 KBytes   209 Kbits/sec                  
[ 14]   6.00-7.00   sec  35.4 KBytes   290 Kbits/sec                  
[ 16]   6.00-7.00   sec  22.6 KBytes   185 Kbits/sec                  
[ 18]   6.00-7.00   sec  56.6 KBytes   463 Kbits/sec                  
[ 20]   6.00-7.00   sec  36.8 KBytes   301 Kbits/sec                  
[ 22]   6.00-7.00   sec  38.2 KBytes   313 Kbits/sec                  
[SUM]   6.00-7.00   sec   339 KBytes  2.78 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.00-8.00   sec  7.07 KBytes  57.9 Kbits/sec                  
[  6]   7.00-8.00   sec  17.0 KBytes   139 Kbits/sec                  
[  8]   7.00-8.00   sec  28.3 KBytes   232 Kbits/sec                  
[ 10]   7.00-8.00   sec  8.48 KBytes  69.5 Kbits/sec                  
[ 12]   7.00-8.00   sec  18.4 KBytes   151 Kbits/sec                  
[ 14]   7.00-8.00   sec  24.0 KBytes   197 Kbits/sec                  
[ 16]   7.00-8.00   sec  7.07 KBytes  57.9 Kbits/sec                  
[ 18]   7.00-8.00   sec  25.5 KBytes   208 Kbits/sec                  
[ 20]   7.00-8.00   sec  21.2 KBytes   174 Kbits/sec                  
[ 22]   7.00-8.00   sec  31.1 KBytes   255 Kbits/sec                  
[SUM]   7.00-8.00   sec   188 KBytes  1.54 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.00-9.00   sec  8.48 KBytes  69.5 Kbits/sec                  
[  6]   8.00-9.00   sec  2.83 KBytes  23.2 Kbits/sec                  
[  8]   8.00-9.00   sec  25.5 KBytes   209 Kbits/sec                  
[ 10]   8.00-9.00   sec  21.2 KBytes   174 Kbits/sec                  
[ 12]   8.00-9.00   sec  17.0 KBytes   139 Kbits/sec                  
[ 14]   8.00-9.00   sec  17.0 KBytes   139 Kbits/sec                  
[ 16]   8.00-9.00   sec  11.3 KBytes  92.7 Kbits/sec                  
[ 18]   8.00-9.00   sec  25.5 KBytes   209 Kbits/sec                  
[ 20]   8.00-9.00   sec  15.6 KBytes   127 Kbits/sec                  
[ 22]   8.00-9.00   sec  24.0 KBytes   197 Kbits/sec                  
[SUM]   8.00-9.00   sec   168 KBytes  1.38 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  7.07 KBytes  57.8 Kbits/sec                  
[  6]   9.00-10.00  sec  22.6 KBytes   185 Kbits/sec                  
[  8]   9.00-10.00  sec  25.5 KBytes   208 Kbits/sec                  
[ 10]   9.00-10.00  sec  26.9 KBytes   219 Kbits/sec                  
[ 12]   9.00-10.00  sec  22.6 KBytes   185 Kbits/sec                  
[ 14]   9.00-10.00  sec  38.2 KBytes   312 Kbits/sec                  
[ 16]   9.00-10.00  sec  15.6 KBytes   127 Kbits/sec                  
[ 18]   9.00-10.00  sec  32.5 KBytes   266 Kbits/sec                  
[ 20]   9.00-10.00  sec  21.2 KBytes   173 Kbits/sec                  
[ 22]   9.00-10.00  sec  21.2 KBytes   173 Kbits/sec                  
[SUM]   9.00-10.00  sec   233 KBytes  1.91 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   385 KBytes   315 Kbits/sec   13             sender
[  4]   0.00-10.00  sec   385 KBytes   315 Kbits/sec                  receiver
[  6]   0.00-10.00  sec   431 KBytes   353 Kbits/sec   15             sender
[  6]   0.00-10.00  sec   370 KBytes   303 Kbits/sec                  receiver
[  8]   0.00-10.00  sec   433 KBytes   354 Kbits/sec   14             sender
[  8]   0.00-10.00  sec   361 KBytes   295 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec   509 KBytes   417 Kbits/sec   11             sender
[ 10]   0.00-10.00  sec   433 KBytes   354 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec   530 KBytes   434 Kbits/sec    7             sender
[ 12]   0.00-10.00  sec   451 KBytes   369 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec   554 KBytes   454 Kbits/sec   10             sender
[ 14]   0.00-10.00  sec   474 KBytes   388 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec   436 KBytes   357 Kbits/sec   13             sender
[ 16]   0.00-10.00  sec   436 KBytes   357 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec   598 KBytes   490 Kbits/sec    8             sender
[ 18]   0.00-10.00  sec   598 KBytes   490 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec   465 KBytes   381 Kbits/sec    9             sender
[ 20]   0.00-10.00  sec   465 KBytes   381 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec   544 KBytes   446 Kbits/sec   12             sender
[ 22]   0.00-10.00  sec   471 KBytes   386 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec  4.77 MBytes  4.00 Mbits/sec  112             sender
[SUM]   0.00-10.00  sec  4.34 MBytes  3.64 Mbits/sec                  receiver

iperf Done.
[odroid@odroid]:~$ iperf3 -c 192.168.0.52 -b 1000m -P 10
Connecting to host 192.168.0.52, port 5201

[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   167 KBytes  1.37 Mbits/sec    0   31.1 KBytes       
[  6]   0.00-1.00   sec   153 KBytes  1.25 Mbits/sec    0   28.3 KBytes       
[  8]   0.00-1.00   sec   129 KBytes  1.05 Mbits/sec    0   22.6 KBytes       
[ 10]   0.00-1.00   sec   160 KBytes  1.31 Mbits/sec    0   29.7 KBytes       
[ 12]   0.00-1.00   sec   133 KBytes  1.09 Mbits/sec    0   25.5 KBytes       
[ 14]   0.00-1.00   sec   136 KBytes  1.11 Mbits/sec    0   25.5 KBytes       
[ 16]   0.00-1.00   sec   129 KBytes  1.05 Mbits/sec    0   22.6 KBytes       
[ 18]   0.00-1.00   sec   129 KBytes  1.05 Mbits/sec    0   22.6 KBytes       
[ 20]   0.00-1.00   sec   157 KBytes  1.29 Mbits/sec    0   29.7 KBytes       
[ 22]   0.00-1.00   sec   157 KBytes  1.29 Mbits/sec    0   29.7 KBytes       
[SUM]   0.00-1.00   sec  1.41 MBytes  11.9 Mbits/sec    0             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   1.00-2.00   sec  48.1 KBytes   393 Kbits/sec    0   31.1 KBytes       
[  6]   1.00-2.00   sec  50.9 KBytes   416 Kbits/sec    0   28.3 KBytes       
[  8]   1.00-2.00   sec  83.4 KBytes   681 Kbits/sec    0   31.1 KBytes       
[ 10]   1.00-2.00   sec  50.9 KBytes   416 Kbits/sec    0   29.7 KBytes       
[ 12]   1.00-2.00   sec  62.2 KBytes   508 Kbits/sec    0   28.3 KBytes       
[ 14]   1.00-2.00   sec  59.4 KBytes   485 Kbits/sec    0   28.3 KBytes       
[ 16]   1.00-2.00   sec  69.3 KBytes   566 Kbits/sec    0   28.3 KBytes       
[ 18]   1.00-2.00   sec  69.3 KBytes   566 Kbits/sec    0   28.3 KBytes       
[ 20]   1.00-2.00   sec  35.4 KBytes   289 Kbits/sec    1   8.48 KBytes       
[ 22]   1.00-2.00   sec  56.6 KBytes   462 Kbits/sec    0   31.1 KBytes       
[SUM]   1.00-2.00   sec   585 KBytes  4.78 Mbits/sec    1             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   2.00-3.00   sec  52.3 KBytes   429 Kbits/sec    0   31.1 KBytes       
[  6]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   28.3 KBytes       
[  8]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   31.1 KBytes       
[ 10]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   29.7 KBytes       
[ 12]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   28.3 KBytes       
[ 14]   2.00-3.00   sec  49.5 KBytes   406 Kbits/sec    0   28.3 KBytes       
[ 16]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   28.3 KBytes       
[ 18]   2.00-3.00   sec  50.9 KBytes   417 Kbits/sec    0   28.3 KBytes       
[ 20]   2.00-3.00   sec  65.0 KBytes   533 Kbits/sec    0   14.1 KBytes       
[ 22]   2.00-3.00   sec  49.5 KBytes   406 Kbits/sec    0   31.1 KBytes       
[SUM]   2.00-3.00   sec   522 KBytes  4.28 Mbits/sec    0             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   3.00-4.00   sec  63.6 KBytes   521 Kbits/sec    0   33.9 KBytes       
[  6]   3.00-4.00   sec  74.9 KBytes   613 Kbits/sec    0   33.9 KBytes       
[  8]   3.00-4.00   sec  63.6 KBytes   521 Kbits/sec    0   33.9 KBytes       
[ 10]   3.00-4.00   sec  74.9 KBytes   613 Kbits/sec    0   35.4 KBytes       
[ 12]   3.00-4.00   sec  74.9 KBytes   613 Kbits/sec    0   33.9 KBytes       
[ 14]   3.00-4.00   sec  48.1 KBytes   393 Kbits/sec    1   14.1 KBytes       
[ 16]   3.00-4.00   sec  77.8 KBytes   636 Kbits/sec    0   33.9 KBytes       
[ 18]   3.00-4.00   sec  52.3 KBytes   428 Kbits/sec    1   7.07 KBytes       
[ 20]   3.00-4.00   sec  55.1 KBytes   451 Kbits/sec    0   17.0 KBytes       
[ 22]   3.00-4.00   sec  63.6 KBytes   521 Kbits/sec    0   33.9 KBytes       
[SUM]   3.00-4.00   sec   649 KBytes  5.31 Mbits/sec    2             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   4.00-5.01   sec  45.2 KBytes   370 Kbits/sec    0   33.9 KBytes       
[  6]   4.00-5.01   sec  45.2 KBytes   370 Kbits/sec    0   33.9 KBytes       
[  8]   4.00-5.01   sec  41.0 KBytes   335 Kbits/sec    1   8.48 KBytes       
[ 10]   4.00-5.01   sec  50.9 KBytes   416 Kbits/sec    0   35.4 KBytes       
[ 12]   4.00-5.01   sec  48.1 KBytes   393 Kbits/sec    0   33.9 KBytes       
[ 14]   4.00-5.01   sec  48.1 KBytes   393 Kbits/sec    0   15.6 KBytes       
[ 16]   4.00-5.01   sec  45.2 KBytes   370 Kbits/sec    1   17.0 KBytes       
[ 18]   4.00-5.01   sec  58.0 KBytes   474 Kbits/sec    1   7.07 KBytes       
[ 20]   4.00-5.01   sec  48.1 KBytes   393 Kbits/sec    0   17.0 KBytes       
[ 22]   4.00-5.01   sec  50.9 KBytes   416 Kbits/sec    0   33.9 KBytes       
[SUM]   4.00-5.01   sec   481 KBytes  3.93 Mbits/sec    3             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   5.01-6.00   sec  79.2 KBytes   651 Kbits/sec    0   39.6 KBytes       
[  6]   5.01-6.00   sec  80.6 KBytes   662 Kbits/sec    0   39.6 KBytes       
[  8]   5.01-6.00   sec  53.7 KBytes   441 Kbits/sec    0   18.4 KBytes       
[ 10]   5.01-6.00   sec  74.9 KBytes   616 Kbits/sec    0   41.0 KBytes       
[ 12]   5.01-6.00   sec  76.4 KBytes   627 Kbits/sec    1   19.8 KBytes       
[ 14]   5.01-6.00   sec  33.9 KBytes   279 Kbits/sec    1   9.90 KBytes       
[ 16]   5.01-6.00   sec  55.1 KBytes   453 Kbits/sec    1   8.48 KBytes       
[ 18]   5.01-6.00   sec  31.1 KBytes   256 Kbits/sec    0   11.3 KBytes       
[ 20]   5.01-6.00   sec  55.1 KBytes   453 Kbits/sec    0   19.8 KBytes       
[ 22]   5.01-6.00   sec  77.8 KBytes   639 Kbits/sec    0   39.6 KBytes       
[SUM]   5.01-6.00   sec   618 KBytes  5.08 Mbits/sec    3             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   6.00-7.00   sec  82.0 KBytes   672 Kbits/sec    0   45.2 KBytes       
[  6]   6.00-7.00   sec  94.7 KBytes   777 Kbits/sec    0   48.1 KBytes       
[  8]   6.00-7.00   sec  56.6 KBytes   464 Kbits/sec    0   19.8 KBytes       
[ 10]   6.00-7.00   sec  94.7 KBytes   777 Kbits/sec    0   49.5 KBytes       
[ 12]   6.00-7.00   sec  58.0 KBytes   475 Kbits/sec    0   21.2 KBytes       
[ 14]   6.00-7.00   sec  45.2 KBytes   371 Kbits/sec    0   14.1 KBytes       
[ 16]   6.00-7.00   sec  38.2 KBytes   313 Kbits/sec    1   5.66 KBytes       
[ 18]   6.00-7.00   sec  26.9 KBytes   220 Kbits/sec    2   2.83 KBytes       
[ 20]   6.00-7.00   sec  50.9 KBytes   417 Kbits/sec    1   9.90 KBytes       
[ 22]   6.00-7.00   sec  80.6 KBytes   661 Kbits/sec    0   45.2 KBytes       
[SUM]   6.00-7.00   sec   628 KBytes  5.15 Mbits/sec    4             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   7.00-8.01   sec  58.0 KBytes   473 Kbits/sec    1   22.6 KBytes       
[  6]   7.00-8.01   sec  65.0 KBytes   531 Kbits/sec    0   48.1 KBytes       
[  8]   7.00-8.01   sec  67.9 KBytes   554 Kbits/sec    0   21.2 KBytes       
[ 10]   7.00-8.01   sec  67.9 KBytes   554 Kbits/sec    0   49.5 KBytes       
[ 12]   7.00-8.01   sec  69.3 KBytes   566 Kbits/sec    0   21.2 KBytes       
[ 14]   7.00-8.01   sec  45.2 KBytes   369 Kbits/sec    1   9.90 KBytes       
[ 16]   7.00-8.01   sec  41.0 KBytes   335 Kbits/sec    0   12.7 KBytes       
[ 18]   7.00-8.01   sec  28.3 KBytes   231 Kbits/sec    0   8.48 KBytes       
[ 20]   7.00-8.01   sec  46.7 KBytes   381 Kbits/sec    0   14.1 KBytes       
[ 22]   7.00-8.01   sec  60.8 KBytes   496 Kbits/sec    1   22.6 KBytes       
[SUM]   7.00-8.01   sec   550 KBytes  4.49 Mbits/sec    3             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   8.01-9.00   sec  48.1 KBytes   395 Kbits/sec    0   22.6 KBytes       
[  6]   8.01-9.00   sec  46.7 KBytes   384 Kbits/sec    0   48.1 KBytes       
[  8]   8.01-9.00   sec  42.4 KBytes   349 Kbits/sec    1   9.90 KBytes       
[ 10]   8.01-9.00   sec  48.1 KBytes   395 Kbits/sec    0   49.5 KBytes       
[ 12]   8.01-9.00   sec  48.1 KBytes   395 Kbits/sec    0   21.2 KBytes       
[ 14]   8.01-9.00   sec  45.2 KBytes   372 Kbits/sec    0   12.7 KBytes       
[ 16]   8.01-9.00   sec  46.7 KBytes   384 Kbits/sec    0   14.1 KBytes       
[ 18]   8.01-9.00   sec  41.0 KBytes   337 Kbits/sec    0   11.3 KBytes       
[ 20]   8.01-9.00   sec  48.1 KBytes   395 Kbits/sec    0   15.6 KBytes       
[ 22]   8.01-9.00   sec  48.1 KBytes   395 Kbits/sec    0   22.6 KBytes       
[SUM]   8.01-9.00   sec   462 KBytes  3.80 Mbits/sec    1             
- - - - - - - - - - - - - - - - - - - - - - - - -
[  4]   9.00-10.00  sec  56.6 KBytes   464 Kbits/sec    0   22.6 KBytes       
[  6]   9.00-10.00  sec  56.6 KBytes   464 Kbits/sec    1   24.0 KBytes       
[  8]   9.00-10.00  sec  49.5 KBytes   406 Kbits/sec    0   12.7 KBytes       
[ 10]   9.00-10.00  sec  53.7 KBytes   441 Kbits/sec    0   49.5 KBytes       
[ 12]   9.00-10.00  sec  56.6 KBytes   464 Kbits/sec    0   21.2 KBytes       
[ 14]   9.00-10.00  sec  52.3 KBytes   429 Kbits/sec    0   14.1 KBytes       
[ 16]   9.00-10.00  sec  53.7 KBytes   441 Kbits/sec    0   15.6 KBytes       
[ 18]   9.00-10.00  sec  50.9 KBytes   417 Kbits/sec    0   12.7 KBytes       
[ 20]   9.00-10.00  sec  53.7 KBytes   441 Kbits/sec    0   17.0 KBytes       
[ 22]   9.00-10.00  sec  56.6 KBytes   464 Kbits/sec    0   22.6 KBytes       
[SUM]   9.00-10.00  sec   540 KBytes  4.43 Mbits/sec    1             
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   700 KBytes   573 Kbits/sec    1             sender
[  4]   0.00-10.00  sec   535 KBytes   438 Kbits/sec                  receiver
[  6]   0.00-10.00  sec   718 KBytes   588 Kbits/sec    1             sender
[  6]   0.00-10.00  sec   542 KBytes   444 Kbits/sec                  receiver
[  8]   0.00-10.00  sec   638 KBytes   522 Kbits/sec    2             sender
[  8]   0.00-10.00  sec   515 KBytes   422 Kbits/sec                  receiver
[ 10]   0.00-10.00  sec   727 KBytes   595 Kbits/sec    0             sender
[ 10]   0.00-10.00  sec   546 KBytes   447 Kbits/sec                  receiver
[ 12]   0.00-10.00  sec   677 KBytes   555 Kbits/sec    1             sender
[ 12]   0.00-10.00  sec   533 KBytes   437 Kbits/sec                  receiver
[ 14]   0.00-10.00  sec   563 KBytes   461 Kbits/sec    3             sender
[ 14]   0.00-10.00  sec   461 KBytes   378 Kbits/sec                  receiver
[ 16]   0.00-10.00  sec   607 KBytes   497 Kbits/sec    3             sender
[ 16]   0.00-10.00  sec   484 KBytes   396 Kbits/sec                  receiver
[ 18]   0.00-10.00  sec   537 KBytes   440 Kbits/sec    4             sender
[ 18]   0.00-10.00  sec   424 KBytes   347 Kbits/sec                  receiver
[ 20]   0.00-10.00  sec   615 KBytes   504 Kbits/sec    2             sender
[ 20]   0.00-10.00  sec   508 KBytes   416 Kbits/sec                  receiver
[ 22]   0.00-10.00  sec   701 KBytes   574 Kbits/sec    1             sender
[ 22]   0.00-10.00  sec   536 KBytes   439 Kbits/sec                  receiver
[SUM]   0.00-10.00  sec  6.33 MBytes  5.31 Mbits/sec   18             sender
[SUM]   0.00-10.00  sec  4.96 MBytes  4.16 Mbits/sec                  receiver

iperf Done.

It seems having my hard drive plugged in was really the biggest contributor to the slowdowns. I can't really understand why.

If anybody else has this problem I would have to advise they look up meverics repo and install the kernel and wifi fix as this seemed to fix 100% of my problem. and of course unplug the damn hard drive!!

xabolcs · Unread post by **xabolcs** » Sat Apr 27, 2019 8:18 pm

How about using an USB 3.0 extender cable with that external hard drive?
You could give a try to shield the cable with aluminium foil.

ODROID

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