I have a Vero 4K+ circa 2018 and am having annoying buffering issues with increasing frequency as I begin to watch more 4K content.
Iperf data below between the Vero and my NAS. I get identical results between the Vero and my PC also. Speeds improve a bit if I change the interface to 100mbps.
I thought it might be the ‘gigabit issue’ so I submitted a support ticket earlier in the week but haven’t received any advice. Does anyone have a suggestion on how to improve the poor and erratic upload performance? I think this will go a long way to resolving my buffering. Thanks!!
osmc@osmc:~$ iperf3 -R -c nas
[ ID] Interval Transfer Bitrate Retr
iperf Done.
[ ID] Interval Transfer Bitrate Retr
iperf Done.
Try ethtool sudo apt-get install ethtool and run ethtool eth0 check the output of that to see any issue.ifconfig eth0
fzinken:
ethtool eth0
osmc@osmc:~$ ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: external
Auto-negotiation: on
Cannot get wake-on-lan settings: Operation not permitted
Current message level: 0x0000003f (63)
drv probe link timer ifdown ifup
Link detected: yes
osmc@osmc:~$ ifconfig eth0
eth0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500
inet 192.168.1.30 netmask 255.255.255.0 broadcast 192.168.1.255
ether c4:4e:ac:28:db:e2 txqueuelen 1000 (Ethernet)
RX packets 12093657 bytes 17198591539 (16.0 GiB)
RX errors 0 dropped 109 overruns 0 frame 0
TX packets 532301 bytes 82152347 (78.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 30
Looks ok. Did you try the upload speed also with something else than iperf3?
Hi fzinken,
Sam did reply to my support ticket today asking for some more information.
In the meantime, I have swapped the Vero out for a RPi4, using the same CAT6 cable and got good results so I don’t believe there’s anything wrong with my infrastructure. Do you have a suggestion for another test tool other than iperf?
pi@raspberrypi:~ $ iperf3 -c nas -R
Connecting to host nas, port 5201
Reverse mode, remote host nas is sending
[ 5] local 192.168.1.90 port 35870 connected to 192.168.1.27 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 112 MBytes 941 Mbits/sec
[ 5] 1.00-2.00 sec 112 MBytes 942 Mbits/sec
[ 5] 2.00-3.00 sec 100 MBytes 842 Mbits/sec
[ 5] 3.00-4.00 sec 102 MBytes 857 Mbits/sec
[ 5] 4.00-5.00 sec 107 MBytes 899 Mbits/sec
[ 5] 5.00-6.00 sec 112 MBytes 942 Mbits/sec
[ 5] 6.00-7.00 sec 112 MBytes 942 Mbits/sec
[ 5] 7.00-8.00 sec 112 MBytes 942 Mbits/sec
[ 5] 8.00-9.00 sec 112 MBytes 942 Mbits/sec
[ 5] 9.00-10.00 sec 111 MBytes 932 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.07 GBytes 921 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.07 GBytes 918 Mbits/sec receiver
iperf Done.
Thanks for your input so far
Got this on my setup:
# iperf3 -R -c 10.0.2.3
Connecting to host 10.0.2.3, port 5201
Reverse mode, remote host 10.0.2.3 is sending
[ 5] local 10.0.3.242 port 40924 connected to 10.0.2.3 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 112 MBytes 940 Mbits/sec
[ 5] 1.00-2.00 sec 112 MBytes 941 Mbits/sec
[ 5] 2.00-3.00 sec 112 MBytes 941 Mbits/sec
[ 5] 3.00-4.00 sec 112 MBytes 941 Mbits/sec
[ 5] 4.00-5.00 sec 112 MBytes 942 Mbits/sec
[ 5] 5.00-6.00 sec 112 MBytes 941 Mbits/sec
[ 5] 6.00-7.00 sec 112 MBytes 942 Mbits/sec
[ 5] 7.00-8.00 sec 112 MBytes 942 Mbits/sec
[ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec
[ 5] 9.00-10.00 sec 112 MBytes 941 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 1.10 GBytes 941 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.10 GBytes 941 Mbits/sec receiver
Note that some computer chipset have smaller buffers for in the Tx (Transmit → sending) direction causing some transfers to be slower in one direction.
If you use kernel mounts to mount your shares you could just run a dd from NAS to /dev/null
Has it ever worked properly? In the first few months after the Vero 4K+ came out, there was a small number that had defective ethernet hardware - if yours hails from 2018, it might be one of them. I would have expected you to notice something wrong long before now, but if you’re only watching 4K stuff for the first time, maybe you might not have noticed.
If I remember correctly, the transfer speeds were way lower then what we see here.
It’s worked fine for 1080p content, and flawlessly with low bitrate 4K video. It’s just the higher bitrate movies that cause the problem to manifest itself. I wouldn’t have ever had cause to benchmark the upload speed otherwise so to answer your question, I don’t know.
So in that case, it may be the case @angry.sardine mentioned.@sam_nazarko can chime in here.
It’s a Synology RS819.
driver: r8168
version: 8.045.12-NAPI
Low end CPU on that thing, but having tested in all directions between NAS, PC, Vero & Pi4, the problem is isolated only to egress from the Vero regardless of destination so i’m not putting too much stock in the NAS being the problem.
Tonight, I’ll connect it directly to my PC to rule out the switch just in case there’s a weird incompatibility there.
Here’s results from Vero connected directly to my laptop using different CAT6 cable
(10.0.0.4 is laptop, 10.0.0.3 is vero)
osmc@osmc:~$ iperf3 -c 10.0.0.4
Connecting to host 10.0.0.4, port 5201
[ 5] local 10.0.0.3 port 39442 connected to 10.0.0.4 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.50 MBytes 12.6 Mbits/sec 68 2.83 KBytes
[ 5] 1.00-2.00 sec 382 KBytes 3.13 Mbits/sec 23 2.83 KBytes
[ 5] 2.00-3.00 sec 3.54 MBytes 29.7 Mbits/sec 157 5.66 KBytes
[ 5] 3.00-4.00 sec 382 KBytes 3.13 Mbits/sec 26 2.83 KBytes
[ 5] 4.00-5.00 sec 445 KBytes 3.65 Mbits/sec 19 2.83 KBytes
[ 5] 5.00-6.00 sec 445 KBytes 3.65 Mbits/sec 19 2.83 KBytes
[ 5] 6.00-7.00 sec 318 KBytes 2.61 Mbits/sec 22 2.83 KBytes
[ 5] 7.00-8.00 sec 573 KBytes 4.69 Mbits/sec 29 4.24 KBytes
[ 5] 8.00-9.00 sec 509 KBytes 4.17 Mbits/sec 28 2.83 KBytes
[ 5] 9.00-10.00 sec 445 KBytes 3.65 Mbits/sec 18 2.83 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 8.45 MBytes 7.09 Mbits/sec 409 sender
[ 5] 0.00-10.00 sec 8.33 MBytes 6.98 Mbits/sec receiver
iperf Done.
osmc@osmc:~$ iperf3 -c 10.0.0.4 -R
Connecting to host 10.0.0.4, port 5201
Reverse mode, remote host 10.0.0.4 is sending
[ 5] local 10.0.0.3 port 39446 connected to 10.0.0.4 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 109 MBytes 915 Mbits/sec
[ 5] 1.00-2.00 sec 109 MBytes 914 Mbits/sec
[ 5] 2.00-3.00 sec 106 MBytes 891 Mbits/sec
[ 5] 3.00-4.00 sec 109 MBytes 917 Mbits/sec
[ 5] 4.00-5.00 sec 109 MBytes 917 Mbits/sec
[ 5] 5.00-6.00 sec 110 MBytes 919 Mbits/sec
[ 5] 6.00-7.00 sec 109 MBytes 912 Mbits/sec
[ 5] 7.00-8.00 sec 107 MBytes 899 Mbits/sec
[ 5] 8.00-9.00 sec 109 MBytes 916 Mbits/sec
[ 5] 9.00-10.00 sec 109 MBytes 918 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.06 GBytes 912 Mbits/sec sender
[ 5] 0.00-10.00 sec 1.06 GBytes 912 Mbits/sec receiver
iperf Done.
osmc@osmc:~$
Only thing left to try is nuking the Vero and reimaging it. I don’t have time to do that right now, so will report back in a couple of days. Thanks everyone
Your MAC address shouldn’t be affected (I have checked affected units).
Can you try with a Cat5E cable?
Pinched a CAT5e from work and am getting the same results. I’ll wipe it tommorrow night. Thanks for ruling out the known hardware issue from 2018.
Okay so I was too curious, so wiped it tonight.
Fresh vanilla install:
osmc@osmc:~$ iperf3 -c nas
Connecting to host nas, port 5201
[ 5] local 192.168.1.30 port 45810 connected to 192.168.1.27 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 5.99 MBytes 50.2 Mbits/sec 143 1.41 KBytes
[ 5] 1.00-2.00 sec 1.39 MBytes 11.6 Mbits/sec 31 25.5 KBytes
[ 5] 2.00-3.00 sec 9.32 MBytes 78.2 Mbits/sec 228 2.83 KBytes
[ 5] 3.00-4.00 sec 15.0 MBytes 126 Mbits/sec 289 11.3 KBytes
[ 5] 4.00-5.00 sec 6.96 MBytes 58.4 Mbits/sec 198 2.83 KBytes
[ 5] 5.00-6.00 sec 7.27 MBytes 61.0 Mbits/sec 180 2.83 KBytes
[ 5] 6.00-7.00 sec 2.86 MBytes 24.0 Mbits/sec 61 2.83 KBytes
[ 5] 7.00-8.00 sec 4.78 MBytes 40.1 Mbits/sec 119 2.83 KBytes
[ 5] 8.00-9.00 sec 764 KBytes 6.25 Mbits/sec 30 2.83 KBytes
[ 5] 9.00-10.00 sec 13.4 MBytes 112 Mbits/sec 293 19.8 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 67.7 MBytes 56.7 Mbits/sec 1572 sender
[ 5] 0.00-10.00 sec 66.9 MBytes 56.1 Mbits/sec receiver
iperf Done.
I noticed that if I run 8 parallel streams, I get closer to what I expect but based on what I’ve read on the forums here, I should be getting closer to the 940Mbps without the -P 8 parameter. Maybe that info helps steer someone in the right direction to help me?
osmc@osmc:~$ iperf3 -c nas -P 8
Connecting to host nas, port 5201
[ 5] local 192.168.1.30 port 45854 connected to 192.168.1.27 port 5201
[ 7] local 192.168.1.30 port 45856 connected to 192.168.1.27 port 5201
[ 9] local 192.168.1.30 port 45858 connected to 192.168.1.27 port 5201
[ 11] local 192.168.1.30 port 45860 connected to 192.168.1.27 port 5201
[ 13] local 192.168.1.30 port 45862 connected to 192.168.1.27 port 5201
[ 15] local 192.168.1.30 port 45864 connected to 192.168.1.27 port 5201
[ 17] local 192.168.1.30 port 45866 connected to 192.168.1.27 port 5201
[ 19] local 192.168.1.30 port 45868 connected to 192.168.1.27 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 9.76 MBytes 81.8 Mbits/sec 174 7.07 KBytes
[ 7] 0.00-1.00 sec 8.26 MBytes 69.3 Mbits/sec 152 1.41 KBytes
[ 9] 0.00-1.00 sec 11.7 MBytes 97.9 Mbits/sec 180 1.41 KBytes
[ 11] 0.00-1.00 sec 13.1 MBytes 110 Mbits/sec 207 4.24 KBytes
[ 13] 0.00-1.00 sec 12.0 MBytes 101 Mbits/sec 224 9.90 KBytes
[ 15] 0.00-1.00 sec 13.7 MBytes 115 Mbits/sec 226 9.90 KBytes
[ 17] 0.00-1.00 sec 12.8 MBytes 108 Mbits/sec 203 2.83 KBytes
[ 19] 0.00-1.00 sec 13.8 MBytes 116 Mbits/sec 241 8.48 KBytes
[SUM] 0.00-1.00 sec 95.2 MBytes 798 Mbits/sec 1607
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 1.00-2.00 sec 13.7 MBytes 115 Mbits/sec 228 7.07 KBytes
[ 7] 1.00-2.00 sec 12.9 MBytes 108 Mbits/sec 225 2.83 KBytes
[ 9] 1.00-2.00 sec 11.9 MBytes 99.6 Mbits/sec 218 12.7 KBytes
[ 11] 1.00-2.00 sec 7.27 MBytes 61.0 Mbits/sec 127 1.41 KBytes
[ 13] 1.00-2.00 sec 15.7 MBytes 131 Mbits/sec 265 11.3 KBytes
[ 15] 1.00-2.00 sec 11.9 MBytes 100 Mbits/sec 190 9.90 KBytes
[ 17] 1.00-2.00 sec 8.82 MBytes 74.0 Mbits/sec 157 5.66 KBytes
[ 19] 1.00-2.00 sec 14.5 MBytes 122 Mbits/sec 233 8.48 KBytes
[SUM] 1.00-2.00 sec 96.8 MBytes 812 Mbits/sec 1643
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 2.00-3.00 sec 12.1 MBytes 102 Mbits/sec 228 21.2 KBytes
[ 7] 2.00-3.00 sec 10.6 MBytes 89.1 Mbits/sec 216 9.90 KBytes
[ 9] 2.00-3.00 sec 13.9 MBytes 116 Mbits/sec 265 7.07 KBytes
[ 11] 2.00-3.00 sec 4.10 MBytes 34.4 Mbits/sec 87 1.41 KBytes
[ 13] 2.00-3.00 sec 15.1 MBytes 127 Mbits/sec 310 8.48 KBytes
[ 15] 2.00-3.00 sec 14.5 MBytes 122 Mbits/sec 282 5.66 KBytes
[ 17] 2.00-3.00 sec 9.69 MBytes 81.3 Mbits/sec 191 8.48 KBytes
[ 19] 2.00-3.00 sec 14.7 MBytes 124 Mbits/sec 279 15.6 KBytes
[SUM] 2.00-3.00 sec 94.8 MBytes 795 Mbits/sec 1858
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 3.00-4.00 sec 16.5 MBytes 139 Mbits/sec 318 8.48 KBytes
[ 7] 3.00-4.00 sec 13.2 MBytes 111 Mbits/sec 252 1.41 KBytes
[ 9] 3.00-4.00 sec 6.90 MBytes 57.9 Mbits/sec 130 15.6 KBytes
[ 11] 3.00-4.00 sec 8.26 MBytes 69.3 Mbits/sec 181 12.7 KBytes
[ 13] 3.00-4.00 sec 12.0 MBytes 101 Mbits/sec 205 8.48 KBytes
[ 15] 3.00-4.00 sec 10.9 MBytes 91.2 Mbits/sec 217 14.1 KBytes
[ 17] 3.00-4.00 sec 15.2 MBytes 128 Mbits/sec 291 1.41 KBytes
[ 19] 3.00-4.00 sec 11.5 MBytes 96.4 Mbits/sec 232 5.66 KBytes
[SUM] 3.00-4.00 sec 94.5 MBytes 792 Mbits/sec 1826
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 4.00-5.00 sec 16.8 MBytes 141 Mbits/sec 286 15.6 KBytes
[ 7] 4.00-5.00 sec 12.2 MBytes 103 Mbits/sec 236 2.83 KBytes
[ 9] 4.00-5.00 sec 10.3 MBytes 86.5 Mbits/sec 182 2.83 KBytes
[ 11] 4.00-5.00 sec 15.4 MBytes 129 Mbits/sec 288 7.07 KBytes
[ 13] 4.00-5.00 sec 11.4 MBytes 95.4 Mbits/sec 218 1.41 KBytes
[ 15] 4.00-5.00 sec 10.1 MBytes 84.4 Mbits/sec 183 2.83 KBytes
[ 17] 4.00-5.00 sec 7.15 MBytes 59.9 Mbits/sec 148 5.66 KBytes
[ 19] 4.00-5.00 sec 13.2 MBytes 111 Mbits/sec 208 9.90 KBytes
[SUM] 4.00-5.00 sec 96.6 MBytes 810 Mbits/sec 1749
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 5.00-6.00 sec 8.82 MBytes 74.0 Mbits/sec 171 2.83 KBytes
[ 7] 5.00-6.00 sec 10.9 MBytes 91.2 Mbits/sec 224 4.24 KBytes
[ 9] 5.00-6.00 sec 11.4 MBytes 95.4 Mbits/sec 222 8.48 KBytes
[ 11] 5.00-6.00 sec 13.6 MBytes 114 Mbits/sec 270 7.07 KBytes
[ 13] 5.00-6.00 sec 10.4 MBytes 87.1 Mbits/sec 215 18.4 KBytes
[ 15] 5.00-6.00 sec 10.9 MBytes 91.8 Mbits/sec 185 9.90 KBytes
[ 17] 5.00-6.00 sec 14.1 MBytes 118 Mbits/sec 260 4.24 KBytes
[ 19] 5.00-6.00 sec 12.8 MBytes 107 Mbits/sec 249 15.6 KBytes
[SUM] 5.00-6.00 sec 92.9 MBytes 779 Mbits/sec 1796
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 6.00-7.00 sec 6.65 MBytes 55.8 Mbits/sec 125 2.83 KBytes
[ 7] 6.00-7.00 sec 12.5 MBytes 105 Mbits/sec 241 5.66 KBytes
[ 9] 6.00-7.00 sec 13.9 MBytes 117 Mbits/sec 258 19.8 KBytes
[ 11] 6.00-7.00 sec 12.8 MBytes 107 Mbits/sec 256 9.90 KBytes
[ 13] 6.00-7.00 sec 14.5 MBytes 122 Mbits/sec 278 12.7 KBytes
[ 15] 6.00-7.00 sec 12.8 MBytes 107 Mbits/sec 269 9.90 KBytes
[ 17] 6.00-7.00 sec 10.9 MBytes 91.2 Mbits/sec 203 19.8 KBytes
[ 19] 6.00-7.00 sec 10.2 MBytes 85.5 Mbits/sec 207 5.66 KBytes
[SUM] 6.00-7.00 sec 94.3 MBytes 791 Mbits/sec 1837
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 7.00-8.00 sec 3.36 MBytes 28.2 Mbits/sec 62 14.1 KBytes
[ 7] 7.00-8.00 sec 19.3 MBytes 162 Mbits/sec 433 4.24 KBytes
[ 9] 7.00-8.00 sec 9.76 MBytes 81.9 Mbits/sec 251 9.90 KBytes
[ 11] 7.00-8.00 sec 8.76 MBytes 73.5 Mbits/sec 185 8.48 KBytes
[ 13] 7.00-8.00 sec 18.0 MBytes 151 Mbits/sec 382 1.41 KBytes
[ 15] 7.00-8.00 sec 10.6 MBytes 88.6 Mbits/sec 224 14.1 KBytes
[ 17] 7.00-8.00 sec 10.1 MBytes 84.5 Mbits/sec 234 2.83 KBytes
[ 19] 7.00-8.00 sec 1.99 MBytes 16.7 Mbits/sec 44 11.3 KBytes
[SUM] 7.00-8.00 sec 81.8 MBytes 686 Mbits/sec 1815
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 8.00-9.00 sec 6.96 MBytes 58.4 Mbits/sec 139 2.83 KBytes
[ 7] 8.00-9.00 sec 16.2 MBytes 136 Mbits/sec 284 5.66 KBytes
[ 9] 8.00-9.00 sec 4.91 MBytes 41.2 Mbits/sec 100 2.83 KBytes
[ 11] 8.00-9.00 sec 23.3 MBytes 195 Mbits/sec 447 14.1 KBytes
[ 13] 8.00-9.00 sec 10.4 MBytes 87.5 Mbits/sec 208 7.07 KBytes
[ 15] 8.00-9.00 sec 17.7 MBytes 148 Mbits/sec 336 12.7 KBytes
[ 17] 8.00-9.00 sec 5.59 MBytes 46.9 Mbits/sec 105 15.6 KBytes
[ 19] 8.00-9.00 sec 12.2 MBytes 102 Mbits/sec 242 4.24 KBytes
[SUM] 8.00-9.00 sec 97.3 MBytes 816 Mbits/sec 1861
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 9.00-10.00 sec 12.6 MBytes 106 Mbits/sec 267 12.7 KBytes
[ 7] 9.00-10.00 sec 5.65 MBytes 47.5 Mbits/sec 111 15.6 KBytes
[ 9] 9.00-10.00 sec 4.97 MBytes 41.7 Mbits/sec 108 11.3 KBytes
[ 11] 9.00-10.00 sec 22.4 MBytes 188 Mbits/sec 499 43.8 KBytes
[ 13] 9.00-10.00 sec 13.0 MBytes 110 Mbits/sec 293 7.07 KBytes
[ 15] 9.00-10.00 sec 17.8 MBytes 149 Mbits/sec 339 9.90 KBytes
[ 17] 9.00-10.00 sec 2.17 MBytes 18.3 Mbits/sec 46 2.83 KBytes
[ 19] 9.00-10.00 sec 3.48 MBytes 29.2 Mbits/sec 92 1.41 KBytes
[SUM] 9.00-10.00 sec 82.2 MBytes 689 Mbits/sec 1755
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 107 MBytes 90.0 Mbits/sec 1998 sender
[ 5] 0.00-10.00 sec 107 MBytes 89.7 Mbits/sec receiver
[ 7] 0.00-10.00 sec 122 MBytes 102 Mbits/sec 2374 sender
[ 7] 0.00-10.00 sec 121 MBytes 102 Mbits/sec receiver
[ 9] 0.00-10.00 sec 99.5 MBytes 83.5 Mbits/sec 1914 sender
[ 9] 0.00-10.00 sec 99.0 MBytes 83.0 Mbits/sec receiver
[ 11] 0.00-10.00 sec 129 MBytes 108 Mbits/sec 2547 sender
[ 11] 0.00-10.00 sec 129 MBytes 108 Mbits/sec receiver
[ 13] 0.00-10.00 sec 133 MBytes 111 Mbits/sec 2598 sender
[ 13] 0.00-10.00 sec 132 MBytes 111 Mbits/sec receiver
[ 15] 0.00-10.00 sec 131 MBytes 110 Mbits/sec 2451 sender
[ 15] 0.00-10.00 sec 130 MBytes 109 Mbits/sec receiver
[ 17] 0.00-10.00 sec 96.5 MBytes 80.9 Mbits/sec 1838 sender
[ 17] 0.00-10.00 sec 96.2 MBytes 80.7 Mbits/sec receiver
[ 19] 0.00-10.00 sec 108 MBytes 91.0 Mbits/sec 2027 sender
[ 19] 0.00-10.00 sec 108 MBytes 90.5 Mbits/sec receiver
[SUM] 0.00-10.00 sec 926 MBytes 777 Mbits/sec 17747 sender
[SUM] 0.00-10.00 sec 923 MBytes 774 Mbits/sec receiver
iperf Done.
What I see is that you have lots of retries, showing a conditioned network.
Mine looks like this:
osmc@vero4k2:~$ ifconfig eth0
eth0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500
inet 10.0.3.242 netmask 255.255.254.0 broadcast 10.0.3.255
ether c4:4e:ac:28:57:97 txqueuelen 1000 (Ethernet)
RX packets 4670394 bytes 5971485544 (5.5 GiB)
RX errors 0 dropped 24787 overruns 0 frame 0
TX packets 1260651 bytes 1486299946 (1.3 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 30
NAS (Actually my Kubernetes Server):
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.5.1 netmask 255.255.255.240 broadcast 192.168.5.15
inet6 fe80::aaa1:59ff:fe80:162a prefixlen 64 scopeid 0x20<link>
ether a8:a1:59:80:16:2a txqueuelen 1000 (Ethernet)
RX packets 817514 bytes 856892979 (856.8 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 624739 bytes 293204032 (293.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Note: I have rebooted my NAS today. The Dropped packets on the vero interface come from that reboot as it was playing back some music at the time of the reboot.
Also - you made a straight connection NAS <-> Vero4k2? I have a switch in between so can actually also check the switch details (for errors etc.). OK, and The Vero also is routed through the firewall to reach the NAS
Practically everywhere the vero is involved, the Tx is reduced in speed.
Seems like there might be an issue with the device, but it’s not a unit that was affected in the initial batch.
Did you have playback issues from the beginning or did they come on suddenly?
Sam
= ~1-20mbps
= ~900mbps