Vero 4K + network speed major disappointment

Wuffzack · 20 September 2018 14:37

ethtool -s eth0 speed 100 duplex full autoneg off works the same. Switch shows 100 MBit/s in the web ui.

Receiving seems a little slow

Now for giggles, I tried -R with 1 Gbit/s. I am sure, I tried this before, and it was really bad. But now I get this:

root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[  4] local 10.1.0.41 port 50299 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  74.6 MBytes   626 Mbits/sec
[  4]   1.00-2.00   sec   112 MBytes   940 Mbits/sec
[  4]   2.00-3.00   sec   110 MBytes   920 Mbits/sec
[  4]   3.00-4.00   sec   112 MBytes   939 Mbits/sec
[  4]   4.00-5.00   sec   112 MBytes   941 Mbits/sec
[  4]   5.00-6.00   sec   112 MBytes   941 Mbits/sec
[  4]   6.00-7.00   sec   112 MBytes   939 Mbits/sec
[  4]   7.00-8.00   sec   112 MBytes   941 Mbits/sec
[  4]   8.00-9.00   sec   110 MBytes   927 Mbits/sec
[  4]   9.00-10.00  sec   112 MBytes   941 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  1.05 GBytes   906 Mbits/sec                  sender
[  4]   0.00-10.00  sec  1.05 GBytes   906 Mbits/sec                  receiver

iperf Done.

What the… ???
Sending is still bad with many retries.
After the test above I tried playback in Kodi. Should work fine, as receiving is fine… No! Stutters and freezes like hell.

Now repeat the same test. Very, very bad:

root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[  4] local 10.1.0.41 port 50497 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  77.0 MBytes   646 Mbits/sec
[  4]   1.00-2.00   sec  1.71 MBytes  14.3 Mbits/sec
[  4]   2.00-3.00   sec  1.09 MBytes  9.16 Mbits/sec
[  4]   3.00-4.00   sec   489 KBytes  4.01 Mbits/sec
[  4]   4.00-5.00   sec   894 KBytes  7.32 Mbits/sec
[  4]   5.00-6.00   sec  1.94 MBytes  16.2 Mbits/sec
[  4]   6.00-7.00   sec  5.47 MBytes  45.9 Mbits/sec
[  4]   7.00-8.00   sec  1.66 MBytes  13.9 Mbits/sec
[  4]   8.00-9.00   sec  73.5 KBytes   602 Kbits/sec
[  4]   9.00-10.00  sec  2.42 MBytes  20.3 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  92.9 MBytes  77.9 Mbits/sec                  sender
[  4]   0.00-10.00  sec  92.7 MBytes  77.8 Mbits/sec                  receiver

iperf Done.

Smurphy · 20 September 2018 14:44

If you have a configurable Switch - could you configure the Switch and the Vero to use 1GBps full duplex? wonder if that works.

Wuffzack · 20 September 2018 14:44

No I don’t know, how to do this. And frankly, I don’t see the point. The problem seems to be very down at the link layer. Capturing packet doesn’t make sense to me.

As a reminder, same switch(es), same cable, and Amlogic S912 box with Libreelec wrxtasty build runs fine, Windows PCs run fine, Nvidia Shield with Kodi runs fine.

I suspect something is wrong with the “magic” eth0 interface, which provides 1 GB Ethernet with the S905X. I have no idea, how this is actually possible. Is this an external Ethernet chip? But then, how is it connected to the SOC? Certainly not USB…

Wuffzack · 20 September 2018 14:45

You mean non auto negotiation? Will try.

Smurphy · 20 September 2018 14:46

Exactly. Make sure you configure the same params on both sides.

fzinken · 20 September 2018 14:48

What does that mean? What was Sending and Receiving average?

Wuffzack · 20 September 2018 14:51

Done. Quite bad:

root@osmckino:~# iperf3 -c whs3
Connecting to host whs3, port 5201
[  4] local 10.1.0.41 port 50671 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  4.42 MBytes  37.1 Mbits/sec  121   4.24 KBytes
[  4]   1.00-2.00   sec  1.81 MBytes  15.2 Mbits/sec   70   2.83 KBytes
[  4]   2.00-3.00   sec  1.01 MBytes  8.43 Mbits/sec   31   2.83 KBytes
[  4]   3.00-4.00   sec  1.90 MBytes  15.9 Mbits/sec   66   2.83 KBytes
[  4]   4.00-5.00   sec  1.93 MBytes  16.2 Mbits/sec   65   2.83 KBytes
[  4]   5.00-6.00   sec  1.80 MBytes  15.1 Mbits/sec   62   2.83 KBytes
[  4]   6.00-7.00   sec  2.35 MBytes  19.7 Mbits/sec   73   2.83 KBytes
[  4]   7.00-8.00   sec  1.40 MBytes  11.7 Mbits/sec   47   2.83 KBytes
[  4]   8.00-9.00   sec   745 KBytes  6.10 Mbits/sec   27   1.41 KBytes
[  4]   9.00-10.00  sec  3.80 MBytes  31.9 Mbits/sec  129   2.83 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  21.1 MBytes  17.7 Mbits/sec  691             sender
[  4]   0.00-10.00  sec  21.1 MBytes  17.7 Mbits/sec                  receiver

iperf Done.

But now the other direction:
root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[ 4] local 10.1.0.41 port 50708 connected to 10.1.0.10 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 110 MBytes 924 Mbits/sec
[ 4] 1.00-2.00 sec 109 MBytes 917 Mbits/sec
[ 4] 2.00-3.00 sec 112 MBytes 936 Mbits/sec
[ 4] 3.00-4.00 sec 106 MBytes 893 Mbits/sec
[ 4] 4.00-5.00 sec 111 MBytes 928 Mbits/sec
[ 4] 5.00-6.00 sec 111 MBytes 931 Mbits/sec
[ 4] 6.00-7.00 sec 107 MBytes 895 Mbits/sec
[ 4] 7.00-8.00 sec 106 MBytes 888 Mbits/sec
[ 4] 8.00-9.00 sec 76.5 MBytes 642 Mbits/sec
[ 4] 9.00-10.00 sec 112 MBytes 940 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.04 GBytes 889 Mbits/sec sender
[ 4] 0.00-10.00 sec 1.04 GBytes 889 Mbits/sec receiver

iperf Done.

???

Wuffzack · 20 September 2018 14:54

root@osmckino:~# iperf3 -c whs3
Connecting to host whs3, port 5201
[  4] local 10.1.0.41 port 50757 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  10.7 MBytes  89.4 Mbits/sec    0    250 KBytes
[  4]   1.00-2.00   sec  10.0 MBytes  84.2 Mbits/sec    0    250 KBytes
[  4]   2.00-3.00   sec  10.2 MBytes  85.8 Mbits/sec    0    272 KBytes
[  4]   3.00-4.00   sec  9.96 MBytes  83.6 Mbits/sec    0    272 KBytes
[  4]   4.00-5.00   sec  9.91 MBytes  83.1 Mbits/sec    0    272 KBytes
[  4]   5.00-6.00   sec  9.83 MBytes  82.4 Mbits/sec    0    272 KBytes
[  4]   6.00-7.00   sec  10.0 MBytes  84.1 Mbits/sec    0    273 KBytes
[  4]   7.00-8.00   sec  10.0 MBytes  84.2 Mbits/sec    0    273 KBytes
[  4]   8.00-9.00   sec  9.90 MBytes  83.1 Mbits/sec    0    273 KBytes
[  4]   9.00-10.00  sec  9.98 MBytes  83.8 Mbits/sec    0    273 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   101 MBytes  84.4 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  99.2 MBytes  83.2 Mbits/sec                  receiver

iperf Done.
root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[  4] local 10.1.0.41 port 50759 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   132 KBytes  1.08 Mbits/sec
[  4]   1.00-2.00   sec  97.6 KBytes   799 Kbits/sec
[  4]   2.00-3.00   sec   210 KBytes  1.72 Mbits/sec
[  4]   3.00-4.00   sec  59.4 KBytes   486 Kbits/sec
[  4]   4.00-5.00   sec  73.5 KBytes   603 Kbits/sec
[  4]   5.00-6.00   sec  55.1 KBytes   452 Kbits/sec
[  4]   6.00-7.00   sec  1.01 MBytes  8.44 Mbits/sec
[  4]   7.00-8.00   sec   331 KBytes  2.71 Mbits/sec
[  4]   8.00-9.00   sec  5.48 MBytes  46.0 Mbits/sec
[  4]   9.00-10.00  sec  5.13 MBytes  43.0 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  12.8 MBytes  10.7 Mbits/sec                  sender
[  4]   0.00-10.00  sec  12.7 MBytes  10.6 Mbits/sec                  receiver

iperf Done.

Smurphy · 20 September 2018 14:55

Any chance you can replicate the test where it is bad, and get on the vero at the same time (new putty/ssh connection open) a packet capture (dump)? Start the tcpdump capture prior making the iperf test.

sudo apt install tcpdump
sudo tcpdump -i eth0 -s100 -w /tmp/output.pcap

And hit Control-C when iperf is done. Let me know where I can download it. If it’s not too large, I can send you my E-Mail.

Wuffzack · 20 September 2018 14:57

Okay, but I have to do it later.

fzinken · 20 September 2018 14:58

Thanks, so that is really confusing if you force 100Mbit the receiving is bad.
Guess from here onwards we have to wait for @sam_nazarko to show up with some magic

sam_nazarko · 20 September 2018 18:13

I’ve put some details here: Vero 4k + wired network not working - #14

Wuffzack · 20 September 2018 19:12

Some additional Info:
When I connect the Vero to the router (MikroTik CCR 1009) and not to the switch, I get super fast speed. Super smooth playback.
The Mikrotik is connected to the TP-Link Switch which is connected to the whs.box.

root@osmckino:~# iperf3 -c whs3
Connecting to host whs3, port 5201
[  4] local 10.1.0.41 port 44303 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   111 MBytes   934 Mbits/sec    0    272 KBytes
[  4]   1.00-2.00   sec   110 MBytes   923 Mbits/sec    0    272 KBytes
[  4]   2.00-3.00   sec   111 MBytes   938 Mbits/sec    0    272 KBytes
[  4]   3.00-4.00   sec   112 MBytes   937 Mbits/sec    0    272 KBytes
[  4]   4.00-5.00   sec   112 MBytes   938 Mbits/sec    0    272 KBytes
[  4]   5.00-6.00   sec   112 MBytes   937 Mbits/sec    0    272 KBytes
[  4]   6.00-7.00   sec   112 MBytes   936 Mbits/sec    0    272 KBytes
[  4]   7.00-8.00   sec   112 MBytes   937 Mbits/sec    0    272 KBytes
[  4]   8.00-9.00   sec   111 MBytes   935 Mbits/sec    0    272 KBytes
[  4]   9.00-10.00  sec   112 MBytes   938 Mbits/sec    0    272 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.09 GBytes   936 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  1.09 GBytes   934 Mbits/sec                  receiver

iperf Done.
root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[  4] local 10.1.0.41 port 44318 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   111 MBytes   932 Mbits/sec
[  4]   1.00-2.00   sec   112 MBytes   937 Mbits/sec
[  4]   2.00-3.00   sec   110 MBytes   926 Mbits/sec
[  4]   3.00-4.00   sec   109 MBytes   911 Mbits/sec
[  4]   4.00-5.00   sec   112 MBytes   939 Mbits/sec
[  4]   5.00-6.00   sec   112 MBytes   938 Mbits/sec
[  4]   6.00-7.00   sec   112 MBytes   939 Mbits/sec
[  4]   7.00-8.00   sec   110 MBytes   925 Mbits/sec
[  4]   8.00-9.00   sec   112 MBytes   938 Mbits/sec
[  4]   9.00-10.00  sec   112 MBytes   939 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  1.09 GBytes   933 Mbits/sec                  sender
[  4]   0.00-10.00  sec  1.09 GBytes   933 Mbits/sec                  receiver

iperf Done.

Smurphy · 20 September 2018 19:13

So I guess there is an incompatibility on the Switch. that’s why I had requested the packet capture. Maybe we see something there.

Wuffzack · 20 September 2018 19:30

I made a capture while doing this:

root@osmckino:~# iperf3 -c whs3 -R
Connecting to host whs3, port 5201
Reverse mode, remote host whs3 is sending
[  4] local 10.1.0.41 port 44749 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  3.50 MBytes  29.3 Mbits/sec
[  4]   1.00-2.00   sec  1.59 MBytes  13.4 Mbits/sec
[  4]   2.00-3.00   sec   356 KBytes  2.92 Mbits/sec
[  4]   3.00-4.00   sec   625 KBytes  5.12 Mbits/sec
[  4]   4.00-5.00   sec  3.15 MBytes  26.4 Mbits/sec
[  4]   5.00-6.00   sec  1.14 MBytes  9.58 Mbits/sec
[  4]   6.00-7.00   sec  2.87 MBytes  24.0 Mbits/sec
[  4]   7.00-8.00   sec  3.10 MBytes  26.0 Mbits/sec
[  4]   8.00-9.00   sec  3.57 MBytes  29.9 Mbits/sec
[  4]   9.00-10.00  sec   204 KBytes  1.67 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  20.2 MBytes  17.0 Mbits/sec                  sender
[  4]   0.00-10.00  sec  20.1 MBytes  16.8 Mbits/sec                  receiver

iperf Done.

It is 459 kBytes compressed, so can be sent by email.
Where shall I send it?

EDIT:
Or can I attach it to a post?

ActionA · 20 September 2018 19:43

Dropbox? Google drive link?

Wuffzack · 20 September 2018 19:44

Please send me your E-Mail.

sam_nazarko · 20 September 2018 19:57

I am also interested in the capture so will make some space available shortly

Is everyone using a TP Link? I have these switches too but no issues

Painkiller88 · 20 September 2018 20:35

i use a Netgear Nighthawk R7000 Router where my Box is directly connected and to test my macbook 2013 (1300MBit AC Wifi)

SERVER Vero4k+:

Accepted connection from 192.168.1.3, port 61568
[ 5] local 192.168.1.15 port 5201 connected to 192.168.1.3 port 61569
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 82.3 MBytes 689 Mbits/sec
[ 5] 1.00-2.00 sec 83.8 MBytes 702 Mbits/sec
[ 5] 2.00-3.00 sec 83.7 MBytes 704 Mbits/sec
[ 5] 3.00-4.00 sec 83.4 MBytes 699 Mbits/sec
[ 5] 4.00-5.00 sec 84.6 MBytes 709 Mbits/sec
[ 5] 5.00-6.00 sec 84.3 MBytes 708 Mbits/sec
[ 5] 6.00-7.00 sec 84.5 MBytes 708 Mbits/sec
[ 5] 7.00-8.00 sec 84.1 MBytes 706 Mbits/sec
[ 5] 8.00-9.00 sec 84.7 MBytes 711 Mbits/sec
[ 5] 9.00-10.00 sec 84.4 MBytes 708 Mbits/sec
[ 5] 10.00-10.01 sec 559 KBytes 437 Mbits/sec

[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.01 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.01 sec 840 MBytes 704 Mbits/sec receiver

Client (Macbook):
Renes-MacBook-Pro:~ Rene$ iperf3 -c 192.168.1.15
Connecting to host 192.168.1.15, port 5201
[ 5] local 192.168.1.3 port 61569 connected to 192.168.1.15 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 83.1 MBytes 697 Mbits/sec
[ 5] 1.00-2.00 sec 84.2 MBytes 706 Mbits/sec
[ 5] 2.00-3.00 sec 83.4 MBytes 701 Mbits/sec
[ 5] 3.00-4.00 sec 83.6 MBytes 701 Mbits/sec
[ 5] 4.00-5.00 sec 84.2 MBytes 708 Mbits/sec
[ 5] 5.00-6.00 sec 84.4 MBytes 707 Mbits/sec
[ 5] 6.00-7.00 sec 84.2 MBytes 706 Mbits/sec
[ 5] 7.00-8.00 sec 84.0 MBytes 705 Mbits/sec
[ 5] 8.00-9.00 sec 85.1 MBytes 714 Mbits/sec
[ 5] 9.00-10.00 sec 84.2 MBytes 707 Mbits/sec

[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 841 MBytes 705 Mbits/sec sender
[ 5] 0.00-10.00 sec 840 MBytes 705 Mbits/sec receiver

BTW: Tests are made while watching over NAS. For using Wifi on the macbook to test, the results are ok for me.

sam_nazarko · 20 September 2018 20:43

I’d like to work with people that have a transmit problem. Your network performance looks healthy.

Sam