[SOLVED] Slow transfer speed on Minix U9-H?

Thanks for the tip @kostaman. I read the link, weird that cat5e isn’t enough. In my case that is not an issue, I only have cat6, so that shouldn’t be a problem.

I will move my Minix box to the same location as my homebuilt (Intel mobo based) Libreelec HTPC and test IPERF from there. Since the connection for the Libreelec box is terrific (about 900 mbps) I assume that my Minix should deliver more or less the same from the exact same network location. I will notify you about the result!
Thank you all for your support and wisdom.

When it comes to router interface, I have a quite good router but with a crappy interface. I have a ASUS RT-AC68u. I guess I need to install Merlin to have the possibility to see connection type!

Wow. I am so sorry guys.
When I walked through my iperf logs I discovered something weird. Every now and then, I strange ip address appeared. I checked it up and it belongs to the wireless network adapter for the minix. I have no clue why this was enabled, but I can’t rule out that I enabled it upon installation. And I thought that it was put on sleep when a ethernet cable was connected too. But anyway, I get real nice figures in both server and client mode with the wireless adapter disabled:

CoreELEC (official): 8.95.7 (S912.arm)
Minix:~ # iperf3 -c
Connecting to host, port 5201
[ 5] local port 33485 connected to port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 98.1 MBytes 822 Mbits/sec 0 271 KBytes
[ 5] 1.00-2.00 sec 100 MBytes 843 Mbits/sec 0 271 KBytes
[ 5] 2.00-3.00 sec 112 MBytes 941 Mbits/sec 0 271 KBytes
[ 5] 3.00-4.00 sec 97.4 MBytes 817 Mbits/sec 0 271 KBytes
[ 5] 4.00-5.00 sec 112 MBytes 935 Mbits/sec 0 271 KBytes
[ 5] 5.00-6.00 sec 113 MBytes 944 Mbits/sec 0 271 KBytes
[ 5] 6.00-7.00 sec 103 MBytes 867 Mbits/sec 0 271 KBytes
[ 5] 7.00-8.00 sec 112 MBytes 938 Mbits/sec 0 271 KBytes
[ 5] 8.00-9.00 sec 113 MBytes 947 Mbits/sec 0 271 KBytes
[ 5] 9.00-10.00 sec 93.9 MBytes 788 Mbits/sec 0 271 KBytes

[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.03 GBytes 884 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.03 GBytes 883 Mbits/sec receiver

iperf Done.
Minix:~ # iperf3 -s

Server listening on 5201

Accepted connection from, port 51491
[ 5] local port 5201 connected to port 51492
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 110 MBytes 923 Mbits/sec
[ 5] 1.00-2.00 sec 77.6 MBytes 651 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 93.6 MBytes 785 Mbits/sec
[ 5] 5.00-6.00 sec 112 MBytes 942 Mbits/sec
[ 5] 6.00-7.00 sec 112 MBytes 941 Mbits/sec
[ 5] 7.00-8.00 sec 92.9 MBytes 780 Mbits/sec
[ 5] 8.00-9.00 sec 106 MBytes 887 Mbits/sec
[ 5] 9.00-10.00 sec 105 MBytes 880 Mbits/sec
[ 5] 10.00-10.00 sec 266 KBytes 934 Mbits/sec

[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.01 GBytes 867 Mbits/sec receiver

This is very embarrassing of course…sorry, and thanks to all of you!

Good to hear you found the issue. May I ask is your buffering issue now fixed with using your gigabit connection. It probably went through wifi before and wifi is not suitable for 4K streaming (even 100Mbit ethernet is more reliable)

Yes, everything is working as one can expect with a Minix and a gbit connection. Everything is lightning fast with no buffering what so ever. The minix is running in circles round my other HTPC, I will buy another S912 box right away to replace it. But maybe another one with gbit ethernet port, I need to do some investigation first. Anyway, I really like the power in these boxes.

Thanks again!!

@Exile82 glad to hear everything is working as expected now.

Just a word of warning when choosing another S912 device, stick with the Minix, it’s a premium brand that uses quality components, the age old saying of “you get what you pay for” applies here.

Some S912 devices have been hit and miss with fake RAM and different ethernet/wifi chips that we are unable to support.

Panfrost development is coming along for S912 as well so it should be safe for mainline support further down the line.

Thanks for the tip, @anon88919003. Yeah, I have read some threads about this, as I said, I will do a thorough investigation. :slight_smile:

I might be that I stick to the Minix, and buy another one. Besides fake ram and other sad things I appreciate the work Minix has done with the heat sink.

But yeah, I will definitely not go with the cheapest possible. But it is always fun to try other brands. Let’s see what the future holds, for now, I want just to enjoy my Minix u9-h with amazing transfer speed. :wink: