Hi,
I hope you can help, since installing the latest update last night my Pi keeps seizing and requiring a power cycle when watching media that it was playing fine the day before.
I’ve looked at the settings where I can and can’t see anything changed or missing so I turned on logging and have uploaded the log file.
Logfile → https://paste.osmc.tv/dihemeniwu
Willing to try any suggestions short of replacing the Pi.
Many Thanks.
I would remove these lines from your RPi’s config.txt file and see if that helps…
arm_freq=950
core_freq=450
sdram_freq=450
over_voltage=6
If that doesn’t fix the issue I would try another power supply. They have a tendency to fail over time.
Thanks, I’ll give it a go.
This seems to have worked.
I tried a number of different power supplies that were not in use and they all failed to supply enough current, but the original one works once the overclock settings are removed.
Many Thanks.
fyi the memorysize line in your advancedsettings.xml shouldn’t be working. According to the wiki the value you use for a buffer uses 3x it’s amount in RAM. 150MB cache isn’t going to fit in 384MB RAM with an operating system + software + that cache.
The other thing is the log shows you have some characters behind value, I’m not sure what that does. I know if you use just numbers it works correct.
Thanks for the heads up, I have now changed the value to 26214400 which I hope is more suitable.
I can’t see any extra characters when editing the file using nano so hopefully this will help with movie playback.
There really should not be a need to adjust the Cache at all for LAN playback especially with you already running NFS and system mounts. You might want to run iperf to check for a connection issue if your having problems. I did notice that you disallowed 50hz and 60hz switching in your whitelist and I could anticipate this leading to suboptimal playback of some content.
Thanks,
I’ll look into that, I think that them main issue might just be the limitation of the transfer speeds of the Pi as it is by far the slowest machine on the network.
I should upgrade to a faster machine as my Pi is very old now, I’ve looked at the Pi Model 4B but as there is no OSMC for it currently that’s out of the running for now.
A Vero 4K+ would probably obviate many of the problems I’ve had and it is something I’ve been seriously considering, but on the plus side I’ve learned a lot addressing the issues and finding out more about how things work so despite the issues it hasn’t been all bad.
The maximum transfer rate of a full HD Blu-ray rip is only 54mb/s so the lack of a full 1000mb/s network connection should not be much of an issue.
Thank you for the advice and the link.
I tried it as recommended and this is the result I received
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 59925
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 59926
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.00 sec 3.44 MBytes 28.9 Mbits/sec 1 103 KBytes
[ 5] 1.00-2.07 sec 3.38 MBytes 26.5 Mbits/sec 1 88.4 KBytes
[ 5] 2.07-3.00 sec 3.31 MBytes 29.9 Mbits/sec 0 114 KBytes
[ 5] 3.00-4.01 sec 3.62 MBytes 30.1 Mbits/sec 2 101 KBytes
[ 5] 4.01-5.00 sec 3.77 MBytes 31.9 Mbits/sec 1 91.2 KBytes
[ 5] 5.00-6.64 sec 5.74 MBytes 29.4 Mbits/sec 0 133 KBytes
[ 5] 6.64-7.64 sec 3.75 MBytes 31.4 Mbits/sec 0 151 KBytes
[ 5] 7.64-8.00 sec 1.47 MBytes 34.0 Mbits/sec 12 114 KBytes
[ 5] 8.00-9.15 sec 4.26 MBytes 31.1 Mbits/sec 0 140 KBytes
[ 5] 9.15-10.00 sec 1.84 MBytes 18.1 Mbits/sec 21 79.8 KBytes
[ 5] 10.00-10.01 sec 0.00 Bytes 0.00 bits/sec 0 81.3 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.01 sec 34.6 MBytes 29.0 Mbits/sec 38 sender
[ 5] 0.00-10.01 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
And here is the other
Accepted connection from 192.168.11.4, port 59929
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 59930
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 508 KBytes 4.16 Mbits/sec
[ 5] 1.00-2.00 sec 1.25 MBytes 10.5 Mbits/sec
[ 5] 2.00-3.00 sec 2.41 MBytes 20.2 Mbits/sec
[ 5] 3.00-4.00 sec 2.41 MBytes 20.2 Mbits/sec
[ 5] 4.00-5.00 sec 2.05 MBytes 17.2 Mbits/sec
[ 5] 5.00-6.00 sec 1.51 MBytes 12.7 Mbits/sec
[ 5] 6.00-7.00 sec 871 KBytes 7.14 Mbits/sec
[ 5] 7.00-8.00 sec 1.55 MBytes 13.0 Mbits/sec
[ 5] 8.00-9.00 sec 1.46 MBytes 12.3 Mbits/sec
[ 5] 9.00-10.00 sec 1.53 MBytes 12.9 Mbits/sec
[ 5] 10.00-10.04 sec 52.8 KBytes 10.2 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.04 sec 15.6 MBytes 13.0 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
For good measure I also ran the tests with Windows Firewall turned off.
c:\iperf3>iperf3.exe -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.3, port 48694
[ 5] local 192.168.11.4 port 5201 connected to 192.168.11.3 port 48696
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 2.38 MBytes 19.9 Mbits/sec
[ 5] 1.00-2.00 sec 3.12 MBytes 26.2 Mbits/sec
[ 5] 2.00-3.00 sec 3.00 MBytes 25.2 Mbits/sec
[ 5] 3.00-4.00 sec 3.12 MBytes 26.2 Mbits/sec
[ 5] 4.00-5.00 sec 3.38 MBytes 28.3 Mbits/sec
[ 5] 5.00-6.00 sec 3.25 MBytes 27.3 Mbits/sec
[ 5] 6.00-7.00 sec 2.75 MBytes 23.0 Mbits/sec
[ 5] 7.00-8.00 sec 3.00 MBytes 25.2 Mbits/sec
[ 5] 8.00-9.00 sec 3.12 MBytes 26.2 Mbits/sec
[ 5] 9.00-10.00 sec 3.00 MBytes 25.2 Mbits/sec
[ 5] 10.00-10.06 sec 256 KBytes 32.4 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.06 sec 30.4 MBytes 25.3 Mbits/sec sender
[ 5] 0.00-10.06 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.3, port 48698
[ 5] local 192.168.11.4 port 5201 connected to 192.168.11.3 port 48700
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 1.12 MBytes 9.43 Mbits/sec
[ 5] 1.00-2.00 sec 2.75 MBytes 23.1 Mbits/sec
[ 5] 2.00-3.00 sec 3.38 MBytes 28.3 Mbits/sec
[ 5] 3.00-4.00 sec 3.12 MBytes 26.2 Mbits/sec
[ 5] 4.00-5.00 sec 2.50 MBytes 21.0 Mbits/sec
[ 5] 5.00-6.00 sec 2.75 MBytes 23.1 Mbits/sec
[ 5] 6.00-7.00 sec 2.75 MBytes 23.1 Mbits/sec
[ 5] 7.00-8.00 sec 2.75 MBytes 23.0 Mbits/sec
[ 5] 8.00-9.00 sec 2.88 MBytes 24.1 Mbits/sec
[ 5] 9.00-10.00 sec 2.50 MBytes 21.0 Mbits/sec
[ 5] 10.00-10.06 sec 256 KBytes 37.0 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.06 sec 26.8 MBytes 22.3 Mbits/sec sender
[ 5] 0.00-10.06 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
I did some reading and the max throughput should be around 65mb/s on my model so I’m falling well short of that.
Also quite a bit slower than 54mb/s, the question of course now is where do I go from here in debugging the speed issue?
I tried from a PC on the network to the storage machine and the speeds were as expected (see below) so I don’t think that the issue is with the storage machine.
d:\iperf3>iperf3 -R -c 192.168.11.4
Connecting to host 192.168.11.4, port 5201
Reverse mode, remote host 192.168.11.4 is sending
[ 4] local 192.168.11.6 port 50180 connected to 192.168.11.4 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 112 MBytes 940 Mbits/sec
[ 4] 1.00-2.00 sec 112 MBytes 937 Mbits/sec
[ 4] 2.00-3.00 sec 112 MBytes 937 Mbits/sec
[ 4] 3.00-4.00 sec 112 MBytes 939 Mbits/sec
[ 4] 4.00-5.00 sec 112 MBytes 940 Mbits/sec
[ 4] 5.00-6.00 sec 112 MBytes 936 Mbits/sec
[ 4] 6.00-7.00 sec 112 MBytes 940 Mbits/sec
[ 4] 7.00-8.00 sec 111 MBytes 932 Mbits/sec
[ 4] 8.00-9.00 sec 112 MBytes 940 Mbits/sec
[ 4] 9.00-10.00 sec 112 MBytes 937 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.09 GBytes 938 Mbits/sec sender
[ 4] 0.00-10.00 sec 1.09 GBytes 938 Mbits/sec receiver
iperf Done.
d:\iperf3>iperf3 -c 192.168.11.4
Connecting to host 192.168.11.4, port 5201
[ 4] local 192.168.11.6 port 50194 connected to 192.168.11.4 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 110 MBytes 921 Mbits/sec
[ 4] 1.00-2.00 sec 111 MBytes 929 Mbits/sec
[ 4] 2.00-3.00 sec 110 MBytes 927 Mbits/sec
[ 4] 3.00-4.00 sec 110 MBytes 923 Mbits/sec
[ 4] 4.00-5.00 sec 111 MBytes 930 Mbits/sec
[ 4] 5.00-6.00 sec 110 MBytes 924 Mbits/sec
[ 4] 6.00-7.00 sec 110 MBytes 927 Mbits/sec
[ 4] 7.00-8.00 sec 111 MBytes 931 Mbits/sec
[ 4] 8.00-9.00 sec 111 MBytes 930 Mbits/sec
[ 4] 9.00-10.00 sec 112 MBytes 935 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.08 GBytes 928 Mbits/sec sender
[ 4] 0.00-10.00 sec 1.08 GBytes 928 Mbits/sec receiver
iperf Done.Swapping out ethernet cables is probably the best place to start, and most common point of failure. If your RPi is at the end of a long run or using structured wiring then either physically move the RPi closer to the switch for testing, or else plug in a laptop or other machine where the RPi is currently plugged in and see if you can get good numbers from that other machine. If you can’t find an issue with the cabling then you might look at other equipment, but it is hard to say much about that knowing nothing about what hardware your using.
Which model do you have? This is what I get on my oldest RPi which is a 2B with only 100mb/s NIC.
Connecting to host 192.168.254.201, port 5201
Reverse mode, remote host 192.168.254.201 is sending
[ 4] local 192.168.254.222 port 60118 connected to 192.168.254.201 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 1.00-2.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 2.00-3.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 3.00-4.00 sec 11.3 MBytes 94.8 Mbits/sec
[ 4] 4.00-5.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 5.00-6.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 6.00-7.00 sec 11.3 MBytes 94.8 Mbits/sec
[ 4] 7.00-8.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 8.00-9.00 sec 11.3 MBytes 94.9 Mbits/sec
[ 4] 9.00-10.00 sec 11.3 MBytes 94.9 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 113 MBytes 95.0 Mbits/sec sender
[ 4] 0.00-10.00 sec 113 MBytes 95.0 Mbits/sec receiver
And on my RPi 3B+ with (crippled by USB 2.0) gigabit I get…
Connecting to host 192.168.254.201, port 5201
Reverse mode, remote host 192.168.254.201 is sending
[ 4] local 192.168.254.224 port 40194 connected to 192.168.254.201 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 14.6 MBytes 122 Mbits/sec
[ 4] 1.00-2.00 sec 36.3 MBytes 305 Mbits/sec
[ 4] 2.00-3.00 sec 36.1 MBytes 303 Mbits/sec
[ 4] 3.00-4.00 sec 36.5 MBytes 306 Mbits/sec
[ 4] 4.00-5.00 sec 36.2 MBytes 304 Mbits/sec
[ 4] 5.00-6.00 sec 35.9 MBytes 301 Mbits/sec
[ 4] 6.00-7.00 sec 35.8 MBytes 300 Mbits/sec
[ 4] 7.00-8.00 sec 36.3 MBytes 305 Mbits/sec
[ 4] 8.00-9.00 sec 35.6 MBytes 299 Mbits/sec
[ 4] 9.00-10.00 sec 35.3 MBytes 296 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 339 MBytes 284 Mbits/sec sender
[ 4] 0.00-10.00 sec 339 MBytes 284 Mbits/sec receiver
I have the original Pi Model B, as I said, old!
I have dug out a laptop and done some more testing, with the laptop connected via cable to the same switch as the Pi I manage a reasonable average of 48Mb/s
Connecting to host 192.168.11.25, port 5201
Reverse mode, remote host 192.168.11.25 is sending
[ 4] local 192.168.11.3 port 32904 connected to 192.168.11.25 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.01 sec 4.49 MBytes 37.3 Mbits/sec
[ 4] 1.01-2.03 sec 6.38 MBytes 52.4 Mbits/sec
[ 4] 2.03-3.04 sec 5.50 MBytes 45.7 Mbits/sec
[ 4] 3.04-4.02 sec 5.62 MBytes 48.0 Mbits/sec
[ 4] 4.02-5.02 sec 5.62 MBytes 47.4 Mbits/sec
[ 4] 5.02-6.01 sec 6.00 MBytes 50.6 Mbits/sec
[ 4] 6.01-7.04 sec 5.75 MBytes 47.0 Mbits/sec
[ 4] 7.04-8.00 sec 5.00 MBytes 43.5 Mbits/sec
[ 4] 8.00-9.03 sec 5.88 MBytes 48.1 Mbits/sec
[ 4] 9.03-10.04 sec 5.75 MBytes 47.9 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.04 sec 56.6 MBytes 47.3 Mbits/sec sender
[ 4] 0.00-10.04 sec 56.2 MBytes 47.0 Mbits/sec receiver
iperf Done.
osmc@osmc:~$ iperf3 -c 192.168.11.25
Connecting to host 192.168.11.25, port 5201
[ 4] local 192.168.11.3 port 32908 connected to 192.168.11.25 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.10 sec 6.25 MBytes 47.7 Mbits/sec 0 137 KBytes
[ 4] 1.10-2.17 sec 6.25 MBytes 49.2 Mbits/sec 0 137 KBytes
[ 4] 2.17-3.00 sec 5.00 MBytes 50.2 Mbits/sec 0 144 KBytes
[ 4] 3.00-4.04 sec 6.25 MBytes 50.5 Mbits/sec 0 144 KBytes
[ 4] 4.04-5.07 sec 6.25 MBytes 50.6 Mbits/sec 0 144 KBytes
[ 4] 5.07-6.11 sec 6.25 MBytes 50.7 Mbits/sec 0 144 KBytes
[ 4] 6.11-7.16 sec 6.25 MBytes 49.8 Mbits/sec 0 144 KBytes
[ 4] 7.16-8.19 sec 6.25 MBytes 51.1 Mbits/sec 0 144 KBytes
[ 4] 8.19-9.11 sec 5.00 MBytes 45.5 Mbits/sec 0 144 KBytes
[ 4] 9.11-10.05 sec 5.00 MBytes 44.7 Mbits/sec 0 144 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.05 sec 58.8 MBytes 49.1 Mbits/sec 0 sender
[ 4] 0.00-10.05 sec 58.7 MBytes 49.1 Mbits/sec receiver
iperf Done.
However from the laptop to the file server this drops to an average of about 32Mb/s
c:\iperf3>iperf3.exe -R -c 192.168.11.25
Connecting to host 192.168.11.25, port 5201
Reverse mode, remote host 192.168.11.25 is sending
[ 4] local 192.168.11.4 port 63328 connected to 192.168.11.25 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 4.30 MBytes 36.1 Mbits/sec
[ 4] 1.00-2.00 sec 4.08 MBytes 34.2 Mbits/sec
[ 4] 2.00-3.00 sec 3.53 MBytes 29.6 Mbits/sec
[ 4] 3.00-4.00 sec 3.74 MBytes 31.3 Mbits/sec
[ 4] 4.00-5.00 sec 4.00 MBytes 33.6 Mbits/sec
[ 4] 5.00-6.00 sec 3.82 MBytes 32.1 Mbits/sec
[ 4] 6.00-7.00 sec 3.58 MBytes 30.0 Mbits/sec
[ 4] 7.00-8.00 sec 3.82 MBytes 32.0 Mbits/sec
[ 4] 8.00-9.00 sec 3.54 MBytes 29.7 Mbits/sec
[ 4] 9.00-10.00 sec 3.74 MBytes 31.4 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 38.4 MBytes 32.2 Mbits/sec sender
[ 4] 0.00-10.00 sec 38.3 MBytes 32.1 Mbits/sec receiver
iperf Done.
c:\iperf3>iperf3.exe -c 192.168.11.25
Connecting to host 192.168.11.25, port 5201
[ 4] local 192.168.11.4 port 63331 connected to 192.168.11.25 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 2.75 MBytes 23.1 Mbits/sec
[ 4] 1.00-2.00 sec 4.25 MBytes 35.7 Mbits/sec
[ 4] 2.00-3.00 sec 4.38 MBytes 36.7 Mbits/sec
[ 4] 3.00-4.00 sec 4.38 MBytes 36.7 Mbits/sec
[ 4] 4.00-5.00 sec 4.00 MBytes 33.6 Mbits/sec
[ 4] 5.00-6.00 sec 4.12 MBytes 34.6 Mbits/sec
[ 4] 6.00-7.00 sec 3.50 MBytes 29.4 Mbits/sec
[ 4] 7.00-8.00 sec 3.00 MBytes 25.2 Mbits/sec
[ 4] 8.00-9.00 sec 3.62 MBytes 30.4 Mbits/sec
[ 4] 9.00-10.00 sec 4.12 MBytes 34.6 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 38.1 MBytes 32.0 Mbits/sec sender
[ 4] 0.00-10.00 sec 38.0 MBytes 31.9 Mbits/sec receiver
iperf Done.
I suspect that the issue is the TP-Link TL-PA4010KIT Nano AV600 Powerline Adapters used to get the network from one end of the building to the other.
As I can’t run a physical cable this seemed the best option and a quick test with iperf over WiFi shows that it is still faster (and I’d guess more reliable) than the WiFi option.
All that is left for me to do is to try to find out why the laptop manages 32Mb/s but the Pi is in the 22Mb/s - 25Mb/s range.
It isn’t a huge difference, but may be enough to explain the issues with playback on movies.
Thanks for your help, having hard numbers makes it easier to identify the bottlenecks.
Wow, that must be painfully slow. I couldn’t upgrade my RPi’s fast enough once the 2 B’s were released.
Rebooting your switch/s and/or powerline adapters may help. It is not unusual for powerline adapters in particular to drop down to slower speeds and only recover after a hard boot. Be aware that switches can go bad and reduce transfer rate (sometimes on just some ports). To use iperf to verify cable integrity you would really need to have both devices plugged directly into the same switch (ideally with two gigabit capable machines so your testing all four pairs).
Not terribly, fine for most things most of the time, just the current issue with some of the movies that’s bugging me. Ones that I’ve watched before without issue are not playing properly now, maybe the Pi has reached a tipping point,
I’ll investigate the networking more fully over the weekend and will try swapping cables and testing at different points to see if I can improve things.
If I can get the buffer working better it will probably smooth over most issues anyway, but with a more decent network speed then that wouldn’t be an issue in the first place.
I’ll see where things go.
Mentioning that first time helps always 
Surely every Pi (even the oldest one) will do 94Mbit over Ethernet Cable. But Powerline surely gives major performance issues.
Surely every Pi (even the oldest one) will do 94Mbit over Ethernet Cable.
I don’t think so, here is a comparison from a respected computer hardware review website.
But I think that I should be achieving higher speeds than I am so I’ll be testing and debugging everything over the weekend.
Thanks for that, wasn’t aware of that.
While this page only reports low speeds for Downloading but iperf also at 94 Mbit
https://www.jeffgeerling.com/blogs/jeff-geerling/getting-gigabit-networking
Thanks for the link, but all the models listed are newer than the rPi I currently have.
I only need a small throughput improvement to sort out the issue so hopefully I’ll find something in my network that makes up the shortfall.
I have physically moved the rPi so that both it and the file server are connected to the same switch and re-tested transfer speeds.
It would appear that with kodi running speeds are significantly lower.
Here are the results with kodi running.
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 65507
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 65508
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.44 sec 7.50 MBytes 43.8 Mbits/sec 0 138 KBytes
[ 5] 1.44-2.34 sec 5.00 MBytes 46.4 Mbits/sec 0 138 KBytes
[ 5] 2.34-3.27 sec 5.00 MBytes 45.3 Mbits/sec 0 138 KBytes
[ 5] 3.27-4.41 sec 6.25 MBytes 45.9 Mbits/sec 0 138 KBytes
[ 5] 4.41-5.33 sec 5.00 MBytes 45.4 Mbits/sec 0 138 KBytes
[ 5] 5.33-6.24 sec 5.00 MBytes 46.0 Mbits/sec 0 138 KBytes
[ 5] 6.24-7.40 sec 6.25 MBytes 45.6 Mbits/sec 0 168 KBytes
[ 5] 7.40-8.31 sec 5.00 MBytes 45.6 Mbits/sec 0 168 KBytes
[ 5] 8.31-9.44 sec 6.25 MBytes 46.5 Mbits/sec 0 168 KBytes
[ 5] 9.44-10.11 sec 3.75 MBytes 46.7 Mbits/sec 0 168 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.11 sec 55.0 MBytes 45.6 Mbits/sec 0 sender
[ 5] 0.00-10.11 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 65509
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 65510
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.02 sec 3.37 MBytes 27.7 Mbits/sec
[ 5] 1.02-2.03 sec 5.12 MBytes 42.5 Mbits/sec
[ 5] 2.03-3.03 sec 5.12 MBytes 42.9 Mbits/sec
[ 5] 3.03-4.02 sec 5.75 MBytes 48.8 Mbits/sec
[ 5] 4.02-5.04 sec 5.88 MBytes 48.6 Mbits/sec
[ 5] 5.04-6.00 sec 5.00 MBytes 43.3 Mbits/sec
[ 5] 6.00-7.04 sec 5.88 MBytes 47.5 Mbits/sec
[ 5] 7.04-8.02 sec 5.12 MBytes 44.1 Mbits/sec
[ 5] 8.02-9.05 sec 5.38 MBytes 43.6 Mbits/sec
[ 5] 9.05-10.03 sec 5.12 MBytes 43.7 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.03 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.03 sec 51.7 MBytes 43.3 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Much better than when running over the powerline adapter with an average transfer speed of about 44 Mbits/sec compared with the speed of about 29 Mbits/sec measured yesterday.
One major difference is the number of retries is significantly lower then the previous test over the powerline adaptor which if I’m correct means that there are a lot of dropped packets over the powerline adapter connection.
Here are the results with kodi stopped.
osmc@osmc:~$ sudo systemctl stop mediacenter
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 65477
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 65478
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.02 sec 4.61 MBytes 37.9 Mbits/sec
[ 5] 1.02-2.02 sec 7.38 MBytes 61.8 Mbits/sec
[ 5] 2.02-3.02 sec 7.38 MBytes 61.9 Mbits/sec
[ 5] 3.02-4.02 sec 7.38 MBytes 62.2 Mbits/sec
[ 5] 4.02-5.02 sec 7.38 MBytes 61.4 Mbits/sec
[ 5] 5.02-6.02 sec 4.84 MBytes 41.0 Mbits/sec
[ 5] 6.02-7.05 sec 7.25 MBytes 58.6 Mbits/sec
[ 5] 7.05-8.03 sec 7.12 MBytes 61.4 Mbits/sec
[ 5] 8.03-9.03 sec 7.38 MBytes 61.5 Mbits/sec
[ 5] 9.03-10.02 sec 7.12 MBytes 60.7 Mbits/sec
[ 5] 10.02-10.05 sec 128 KBytes 29.2 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.05 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.05 sec 68.0 MBytes 56.7 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 65479
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 65480
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.27 sec 10.0 MBytes 66.1 Mbits/sec 0 141 KBytes
[ 5] 1.27-2.19 sec 7.50 MBytes 68.7 Mbits/sec 0 141 KBytes
[ 5] 2.19-3.25 sec 8.75 MBytes 68.7 Mbits/sec 0 141 KBytes
[ 5] 3.25-4.22 sec 7.50 MBytes 65.0 Mbits/sec 0 141 KBytes
[ 5] 4.22-5.28 sec 8.75 MBytes 69.3 Mbits/sec 0 141 KBytes
[ 5] 5.28-6.19 sec 7.50 MBytes 69.3 Mbits/sec 0 141 KBytes
[ 5] 6.19-7.25 sec 8.75 MBytes 69.0 Mbits/sec 0 141 KBytes
[ 5] 7.25-8.17 sec 7.50 MBytes 69.1 Mbits/sec 0 141 KBytes
[ 5] 8.17-9.23 sec 8.75 MBytes 68.9 Mbits/sec 0 141 KBytes
[ 5] 9.23-10.14 sec 7.50 MBytes 68.8 Mbits/sec 0 141 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.14 sec 82.5 MBytes 68.2 Mbits/sec 0 sender
[ 5] 0.00-10.14 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
An an average transfer speed of about 63 Mbits/sec, more than enough for my purposes and in line with the expected top end for this model.
I repeated the tests several times and the results were all similar.
Anyone have any idea how to speed up the transfer rate whilst kodi is running?
I guess it could be a case of limited resources and the rPi cannot sustain the faster transfer speeds with the overhead of running kodi, but there could also be some optimisation that I’m just not aware of that I could do to improve the situation.
Next I will test the speeds over the powerline adapter before the second switch. I will supply those details when I have them.
I took some screenshots of the powerline adapters speeds reported by the tp-link utility in case they were useful.
Transfer speeds with the powerline adapter but bypassing the second switch.
With kodi running about 37 Mbits/sec average, also no sign of any retries.
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49162
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49163
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 3.74 MBytes 31.3 Mbits/sec
[ 5] 1.00-2.00 sec 4.14 MBytes 34.7 Mbits/sec
[ 5] 2.00-3.00 sec 4.27 MBytes 36.0 Mbits/sec
[ 5] 3.00-4.00 sec 4.21 MBytes 35.3 Mbits/sec
[ 5] 4.00-5.00 sec 4.26 MBytes 35.6 Mbits/sec
[ 5] 5.00-6.00 sec 4.12 MBytes 34.7 Mbits/sec
[ 5] 6.00-7.01 sec 4.18 MBytes 34.7 Mbits/sec
[ 5] 7.01-8.01 sec 4.20 MBytes 35.3 Mbits/sec
[ 5] 8.01-9.00 sec 4.04 MBytes 34.1 Mbits/sec
[ 5] 9.00-10.01 sec 4.22 MBytes 35.0 Mbits/sec
[ 5] 10.01-10.03 sec 89.8 KBytes 35.5 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.03 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.03 sec 41.5 MBytes 34.7 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49164
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49166
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.00 sec 4.44 MBytes 37.1 Mbits/sec 0 185 KBytes
[ 5] 1.00-2.00 sec 4.04 MBytes 33.9 Mbits/sec 0 195 KBytes
[ 5] 2.00-3.00 sec 4.53 MBytes 38.0 Mbits/sec 0 195 KBytes
[ 5] 3.00-4.00 sec 4.72 MBytes 39.6 Mbits/sec 0 205 KBytes
[ 5] 4.00-5.00 sec 4.96 MBytes 41.6 Mbits/sec 0 205 KBytes
[ 5] 5.00-6.00 sec 5.27 MBytes 44.2 Mbits/sec 0 217 KBytes
[ 5] 6.00-7.00 sec 5.15 MBytes 43.0 Mbits/sec 0 217 KBytes
[ 5] 7.00-8.00 sec 5.02 MBytes 42.3 Mbits/sec 0 217 KBytes
[ 5] 8.00-9.00 sec 4.59 MBytes 38.5 Mbits/sec 0 217 KBytes
[ 5] 9.00-10.00 sec 4.29 MBytes 36.0 Mbits/sec 0 217 KBytes
[ 5] 10.00-10.03 sec 251 KBytes 69.0 Mbits/sec 0 217 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.03 sec 47.3 MBytes 39.5 Mbits/sec 0 sender
[ 5] 0.00-10.03 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Without kodi running, still about 37 Mbits/sec, and again no sign of retries.
osmc@osmc:~$ sudo systemctl stop mediacenter
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49179
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49181
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.00 sec 4.65 MBytes 39.0 Mbits/sec 0 181 KBytes
[ 5] 1.00-2.00 sec 4.41 MBytes 37.0 Mbits/sec 0 200 KBytes
[ 5] 2.00-3.00 sec 4.23 MBytes 35.5 Mbits/sec 0 201 KBytes
[ 5] 3.00-4.00 sec 4.41 MBytes 37.0 Mbits/sec 0 201 KBytes
[ 5] 4.00-5.00 sec 4.47 MBytes 37.4 Mbits/sec 0 212 KBytes
[ 5] 5.00-6.00 sec 4.66 MBytes 39.1 Mbits/sec 0 212 KBytes
[ 5] 6.00-7.00 sec 4.47 MBytes 37.6 Mbits/sec 0 212 KBytes
[ 5] 7.00-8.00 sec 4.59 MBytes 38.5 Mbits/sec 0 212 KBytes
[ 5] 8.00-9.00 sec 4.47 MBytes 37.5 Mbits/sec 0 212 KBytes
[ 5] 9.00-10.00 sec 4.59 MBytes 38.6 Mbits/sec 0 212 KBytes
[ 5] 10.00-10.02 sec 0.00 Bytes 0.00 bits/sec 0 212 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.02 sec 45.0 MBytes 37.6 Mbits/sec 0 sender
[ 5] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49183
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49185
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 4.02 MBytes 33.7 Mbits/sec
[ 5] 1.00-2.00 sec 4.33 MBytes 36.3 Mbits/sec
[ 5] 2.00-3.00 sec 4.21 MBytes 35.3 Mbits/sec
[ 5] 3.00-4.00 sec 4.48 MBytes 37.6 Mbits/sec
[ 5] 4.00-5.00 sec 4.32 MBytes 36.2 Mbits/sec
[ 5] 5.00-6.00 sec 4.46 MBytes 37.5 Mbits/sec
[ 5] 6.00-7.00 sec 4.53 MBytes 38.0 Mbits/sec
[ 5] 7.00-8.00 sec 4.36 MBytes 36.6 Mbits/sec
[ 5] 8.00-9.00 sec 4.43 MBytes 37.2 Mbits/sec
[ 5] 9.00-10.00 sec 4.37 MBytes 36.6 Mbits/sec
[ 5] 10.00-10.04 sec 145 KBytes 33.6 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.04 sec 43.7 MBytes 36.5 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Now, finally using the second switch again …
With kodi running an average of about 32 Mbits/sec.
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49210
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49211
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.67 sec 5.56 MBytes 27.9 Mbits/sec 9 125 KBytes
[ 5] 1.67-2.38 sec 2.50 MBytes 29.7 Mbits/sec 0 135 KBytes
[ 5] 2.38-3.43 sec 3.75 MBytes 29.9 Mbits/sec 0 150 KBytes
[ 5] 3.43-4.38 sec 3.75 MBytes 33.4 Mbits/sec 0 160 KBytes
[ 5] 4.38-5.35 sec 3.75 MBytes 32.4 Mbits/sec 0 167 KBytes
[ 5] 5.35-6.61 sec 5.00 MBytes 33.1 Mbits/sec 0 173 KBytes
[ 5] 6.61-7.54 sec 3.75 MBytes 33.9 Mbits/sec 0 177 KBytes
[ 5] 7.54-8.48 sec 3.75 MBytes 33.5 Mbits/sec 0 184 KBytes
[ 5] 8.48-9.46 sec 3.75 MBytes 32.0 Mbits/sec 0 188 KBytes
[ 5] 9.46-10.11 sec 2.50 MBytes 32.2 Mbits/sec 0 222 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.11 sec 38.1 MBytes 31.6 Mbits/sec 9 sender
[ 5] 0.00-10.11 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49213
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49214
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.02 sec 2.34 MBytes 19.3 Mbits/sec
[ 5] 1.02-2.00 sec 4.10 MBytes 35.0 Mbits/sec
[ 5] 2.00-3.00 sec 3.98 MBytes 33.3 Mbits/sec
[ 5] 3.00-4.00 sec 4.08 MBytes 34.3 Mbits/sec
[ 5] 4.00-5.06 sec 4.22 MBytes 33.4 Mbits/sec
[ 5] 5.06-6.00 sec 4.17 MBytes 37.2 Mbits/sec
[ 5] 6.00-7.00 sec 4.17 MBytes 35.0 Mbits/sec
[ 5] 7.00-8.00 sec 4.26 MBytes 35.7 Mbits/sec
[ 5] 8.00-9.00 sec 4.22 MBytes 35.4 Mbits/sec
[ 5] 9.00-10.00 sec 4.20 MBytes 35.1 Mbits/sec
[ 5] 10.00-10.03 sec 87.0 KBytes 30.0 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.03 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.03 sec 39.8 MBytes 33.3 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Without kodi running an average of about 37 Mbits/sec, and those retries are back, although not many.
osmc@osmc:~$ sudo systemctl stop mediacenter
osmc@osmc:~$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49221
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49222
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 5] 0.00-1.00 sec 4.66 MBytes 39.1 Mbits/sec 8 107 KBytes
[ 5] 1.00-2.01 sec 4.66 MBytes 38.9 Mbits/sec 2 101 KBytes
[ 5] 2.01-3.01 sec 4.78 MBytes 40.1 Mbits/sec 2 94.1 KBytes
[ 5] 3.01-4.00 sec 4.90 MBytes 41.3 Mbits/sec 1 88.4 KBytes
[ 5] 4.00-5.00 sec 4.90 MBytes 41.1 Mbits/sec 0 125 KBytes
[ 5] 5.00-6.01 sec 5.17 MBytes 42.8 Mbits/sec 6 84.1 KBytes
[ 5] 6.01-7.00 sec 4.84 MBytes 41.1 Mbits/sec 0 120 KBytes
[ 5] 7.00-8.00 sec 4.90 MBytes 41.2 Mbits/sec 4 115 KBytes
[ 5] 8.00-9.00 sec 4.96 MBytes 41.7 Mbits/sec 3 113 KBytes
[ 5] 9.00-10.00 sec 4.78 MBytes 40.1 Mbits/sec 3 107 KBytes
[ 5] 10.00-10.05 sec 0.00 Bytes 0.00 bits/sec 0 108 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-10.05 sec 48.6 MBytes 40.5 Mbits/sec 29 sender
[ 5] 0.00-10.05 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.11.4, port 49223
[ 5] local 192.168.11.3 port 5201 connected to 192.168.11.4 port 49224
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 3.99 MBytes 33.5 Mbits/sec
[ 5] 1.00-2.00 sec 4.09 MBytes 34.3 Mbits/sec
[ 5] 2.00-3.00 sec 4.10 MBytes 34.4 Mbits/sec
[ 5] 3.00-4.00 sec 4.06 MBytes 34.1 Mbits/sec
[ 5] 4.00-5.00 sec 4.24 MBytes 35.6 Mbits/sec
[ 5] 5.00-6.00 sec 4.29 MBytes 36.0 Mbits/sec
[ 5] 6.00-7.00 sec 4.10 MBytes 34.4 Mbits/sec
[ 5] 7.00-8.00 sec 4.25 MBytes 35.6 Mbits/sec
[ 5] 8.00-9.00 sec 4.16 MBytes 34.9 Mbits/sec
[ 5] 9.00-10.00 sec 4.24 MBytes 35.5 Mbits/sec
[ 5] 10.00-10.03 sec 118 KBytes 29.6 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.03 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.03 sec 41.6 MBytes 34.8 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
So in summary
rPi - ZyXel GS1900 - Storage
rPi - TP-LINK PA211 - TP-LINK PA211 - ZyXel GS1900 - Storage
rPi - Buffalo WHR-G300N v2 - TP-LINK PA211 - TP-LINK PA211 - ZyXel GS1900 - Storage
So what I’ve learned is;
Big thanks to everyone that offered assistance and suggestions that helped me to get to this point.