Leia Update, Now most 4K movies are buffering/unwatchable

Anyone else having this issue? Almost all of my 4k content now is subject to buffering/stuttering.

My car won’t start, anyone else having this issue?

That’s about as useful an answer as your question. You should know by now that we will ask you for logs!

Was curious if it was a known issue first.

Seems to be happening regardless of the content I play. Was hoping for some guidance or advice on what is appropriate and how to take a relevant log, since sometimes it occurs in the first few minutes of a movie, sometimes 5-10 mins in.

To get a better understanding of the problem you are experiencing we need more information from you. The best way to get this information is for you to upload logs that demonstrate your problem. You can learn more about how to submit a useful support request here.

Depending on the used skin you have to set the settings-level to standard or higher, in summary:

  • enable debug logging at settings->system->logging

  • reboot the OSMC device

  • reproduce the issue

  • upload the log set either using the Log Uploader method within the My OSMC menu in the GUI or the ssh method invoking command grab-logs -A

  • publish the provided URL from the log set upload, here

Thanks for your understanding. We hope that we can help you get up and running again shortly.

OSMC skin screenshot:

Okay, logs grabbed. Took a few mins to show up so log is long, might be better to scroll up from the bottom.

http://paste.osmc.tv/wuyapudazo

Actually… Hold on one sec before you check out that log.

Might have solved this myself. Turns out the wife had a movie paused on my bedroom RPi OSMC instance. Thinking that might have been causing issues… When something is paused, does OSMC keep an active “connection/pipe/stream” with the server?

Stopped that movie completely & rebooted the bedroom Pi OSMC… so far about 10min of playback has been working great on the Vero now.

I am going to let this movie rock and will report back tomorrow if the log needs analysis. Apologies for the potential false alarm.

I guess it would for fast resume.
Depending on how you access the server eg lsof would tell you

@sam_nazarko @ActionA

Okay, so more testing this morning confirms this problem still exists. Grabbed you a new and hopefully cleaner log, located here.

https://paste.osmc.tv/ubeyusenon

Thanks for the log.

Does changing Adjust Refresh Rate to Start / Stop (instead of Always) help here?
Are you able to try playing that file from local storage?
Is it happening with all 4K movies or just some?

Sam

Hey Sam,

let me do some testing tomorrow and report back (my 4k collection is only maybe a dozen or so movies ATM so the sample size is not large). So far it has been most. Hard to report tbh since it happens sporadically, and different points for each movie (and different points when rewatching the same movie). I have not tried locally nor ever used local storage since movies have always been streamed from my mediaserver without any issue.

It may be tough to test locally, since I am unsure if I have an SD/usb drive large enough to fit a 50-70gb 4k movie. Would you still like me to see if I can track one down to test this?

Yes if you can still test on local storage it would be handy

logs too?

It the files play OK from local storage, then logs from that test would not be needed. We would then know that we need to focus on your network settings.

confirmed, changing the refresh rate to start/stop did not resolve the issue.

Playing locally appears okay after about 30-40 mins of playback (this movie normally would have issue in the first 1-3 mins).

Are you guys able to see anything in the logs?

EDIT: Maybe anecdotal, but it seems the Vero4k+ machine on Leia is dropping packets if I compare stats when running ifconfig to those RPi’s running OSMC (which have no packet loss). Granted the vero is like ~30gbs of RX traffic, 90 dropped pkts, vs. ~2gb and 0 dropped for the pi

Are your Pis and Veros on the same switch / router?

Sam

yes sir. I am using Ubiquiti networks USG, and a 24pt cisco unmanaged switch for my backbone. No hubs/switches anywhere else in the path for these two units.

Next step then is to do some network testing. iperf3 is your friend!

Hmm. New to iperf3, but am I reading this correctly in saying that I am only getting 100mbps instead of gigiabit?

osmc@LRMC:~$ iperf3 -R -c 192.168.1.4
Connecting to host 192.168.1.4, port 5201
Reverse mode, remote host 192.168.1.4 is sending
[  4] local 192.168.1.13 port 34378 connected to 192.168.1.4 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  10.6 MBytes  88.6 Mbits/sec                  
[  4]   1.00-2.00   sec  9.65 MBytes  80.9 Mbits/sec                  
[  4]   2.00-3.00   sec  9.94 MBytes  83.4 Mbits/sec                  
[  4]   3.00-4.00   sec  9.83 MBytes  82.4 Mbits/sec                  
[  4]   4.00-5.00   sec  9.29 MBytes  77.9 Mbits/sec                  
[  4]   5.00-6.00   sec  10.5 MBytes  88.3 Mbits/sec                  
[  4]   6.00-7.00   sec  10.4 MBytes  87.4 Mbits/sec                  
[  4]   7.00-8.00   sec  9.89 MBytes  83.0 Mbits/sec                  
[  4]   8.00-9.00   sec  9.86 MBytes  82.7 Mbits/sec                  
[  4]   9.00-10.00  sec  9.84 MBytes  82.5 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   100 MBytes  83.9 Mbits/sec                  sender
[  4]   0.00-10.00  sec   100 MBytes  83.9 Mbits/sec                  receiver

Well far below 100Mbit (which would be in the range of 94-96 Mbit.
What is the value if you run iperf3 without the -R?

Thanks, @fzinken. I just swapped ports upstairs @ the server. I have two. reran.

osmc@LRMC:~$ iperf3 -R -c 192.168.1.4
Connecting to host 192.168.1.4, port 5201
Reverse mode, remote host 192.168.1.4 is sending
[  4] local 192.168.1.13 port 34385 connected to 192.168.1.4 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  11.3 MBytes  95.2 Mbits/sec                  
[  4]   1.00-2.00   sec  11.1 MBytes  93.2 Mbits/sec                  
[  4]   2.00-3.00   sec  11.1 MBytes  93.5 Mbits/sec                  
[  4]   3.00-4.00   sec  11.1 MBytes  93.4 Mbits/sec                  
[  4]   4.00-5.00   sec  11.1 MBytes  93.4 Mbits/sec                  
[  4]   5.00-6.00   sec  11.1 MBytes  93.1 Mbits/sec                  
[  4]   6.00-7.00   sec  11.1 MBytes  93.2 Mbits/sec                  
[  4]   7.00-8.00   sec  11.1 MBytes  93.0 Mbits/sec                  
[  4]   8.00-9.00   sec  11.1 MBytes  93.2 Mbits/sec                  
[  4]   9.00-10.00  sec  11.1 MBytes  93.0 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   112 MBytes  93.5 Mbits/sec                  sender
[  4]   0.00-10.00  sec   112 MBytes  93.5 Mbits/sec                  receiver 

Removed the -R and results are similar.

osmc@LRMC:~$ iperf3 -c 192.168.1.4
Connecting to host 192.168.1.4, port 5201
[  4] local 192.168.1.13 port 34387 connected to 192.168.1.4 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  11.9 MBytes   100 Mbits/sec   25   83.4 KBytes       
[  4]   1.00-2.00   sec  11.2 MBytes  94.4 Mbits/sec   10   86.3 KBytes       
[  4]   2.00-3.00   sec  11.1 MBytes  93.3 Mbits/sec   13   89.1 KBytes       
[  4]   3.00-4.00   sec  11.2 MBytes  94.4 Mbits/sec   11   91.9 KBytes       
[  4]   4.00-5.00   sec  11.2 MBytes  93.8 Mbits/sec   12   96.2 KBytes       
[  4]   5.00-6.00   sec  11.2 MBytes  94.1 Mbits/sec   11   70.7 KBytes       
[  4]   6.00-7.00   sec  11.2 MBytes  94.2 Mbits/sec    0    112 KBytes       
[  4]   7.00-8.00   sec  11.2 MBytes  94.4 Mbits/sec   12    115 KBytes       
[  4]   8.00-9.00   sec  11.2 MBytes  93.8 Mbits/sec   24   84.8 KBytes       
[  4]   9.00-10.00  sec  11.2 MBytes  94.4 Mbits/sec   10   89.1 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   113 MBytes  94.7 Mbits/sec  128             sender
[  4]   0.00-10.00  sec   112 MBytes  94.1 Mbits/sec                  receiver

speed seems better, but still not gigabit. BRB going to check the lights on the backbone switch