Network speed of QNAP NAS decreased by 90% if EmbyServer is running

[Tormentor667 16]

Dear developers,

I have encountered a critical issue with my EmbyServer (4.8.0.21) running on my QNAP (TS-831X). 
 
If EmbyServer is running for a while, my network speed when reading and writing on my shared host on my NAS slows down from 100MB/s to 9MB/s. The only solution is restarting/shutting down EmbyServer on my QNAP.

After restarting, I have full speed again for a while.

What could be the issue here?

[Luke 42077]

Hi there, please attach the emby server log from when this happened.

How to Report a Problem

Thanks.

[Tormentor667 16]

Sure thing, there you go. I took the log while copying data to the NAS (10MB/s). After the log, I restarted the Emby Server from my QNAP Admin Interface and copied something else, and it was speedy as hell again (90MB/s).

embyserver.txt

[Luke 42077]

Two suggestions - disable the automatic port mapper in server network settings, and configure port forwarding in your router manually for remote access (if needed).

Then remove the statistics plugin. Do both of those things, then restart emby server and see how that compares. Thanks.

[Tormentor667 16]

Did both, seems that it fixed the problems. Thanks kindly for the solution, but what was causing it now? The statistics plugin or the router thing?

[Luke 42077]

2 hours ago, Tormentor667 said:

Did both, seems that it fixed the problems. Thanks kindly for the solution, but what was causing it now? The statistics plugin or the router thing?

Thanks for the feedback. I'm not sure. You could try reenabling them one at a time to determine that. Let us know what you find. Thanks.

[Tormentor667 16]

Okay, back to the issue: I noticed that the bug still persists even without Statistics Plugin and the Router Settings. The change didn't help anything, it started again after a while with 10MB/s and I had to restart Emby Server to get back to 100MB/s copying files over.

[Luke 42077]

9 hours ago, Tormentor667 said:

Okay, back to the issue: I noticed that the bug still persists even without Statistics Plugin and the Router Settings. The change didn't help anything, it started again after a while with 10MB/s and I had to restart Emby Server to get back to 100MB/s copying files over.

Please attach the emby server log from when that happened. Thanks.

[tux1980 1]

HI. Any news here? I have exactly the same problem with my TS-431 QNAP. Using EMBY 4.7.11.0 - but also 4.6 in the past I'm experiencing that too. After couple of days the networking throughput slows down to 1-3 Mbit (observing that with iperf). Then, I can access the qnap still via ssh (but not via the WEb UI) to stop the Emyb Service. After stopping Emby the orignal network speed tops up to 100 MB/a again.

Edited May 2, 2023 by tux1980

[tux1980 1]

I also observed that this problem exists since 2018 with all emby versions. A final solution would be great. I'm using the actual emby version and the actual qnap firmware version too.

[Luke 42077]

1 hour ago, tux1980 said:

HI. Any news here? I have exactly the same problem with my TS-431 QNAP. Using EMBY 4.7.11.0 - but also 4.6 in the past I'm experiencing that too. After couple of days the networking throughput slows down to 1-3 Mbit (observing that with iperf). Then, I can access the qnap still via ssh (but not via the WEb UI) to stop the Emyb Service. After stopping Emby the orignal network speed tops up to 100 MB/a again.

Hi, Please attach the emby server log from when that happened. Thanks.

[Tormentor667 16]

For me it works actually, didn't have the issue anymore.

[Luke 42077]

40 minutes ago, Tormentor667 said:

For me it works actually, didn't have the issue anymore.

What was the solution?

[Tormentor667 16]

Good question. I actually have no idea anymore… I was fiddling around with numerous things at this point. 

[tux1980 1]

Hi Guys. Thanks for your answers. I won't upload the log since all my folders and files are clearly shown there and that I won't to due to privacy. 

But asking for the log file is the standard answer for years and some people uploaded the logs and nevertheless, this issue has not been solved in 5 years (since 2018). 

What I'm doing, I restarting the Emby Service on my qnap NAS via the scheduler every second day at 7:30 am. So that is only a lazy bridge solution but at least it is working since the slowdown is only starting after 3-4 days.

@Tormentor667Maybe you will memorize the solution you did find to solve this issue. If so I'm happy about the feedback:).

 

Thanks

Tux1980

 

[Tormentor667 16]

Okay back here - I just tried it and I still suffer the same problem. It's happening from time to time but I didn't notice it anymore because I am restarting my QNAP every day around 8AM and shutting it down around 2AM. But if the slowdown occurs, I need to restart Emby Server and it works again.

[Luke 42077]

Please attach the Emby server log from when the problem was experienced. Thanks.

[Tormentor667 16]

Well, the problem is that it's hard to keep track when the issues is appearing or starting to appear.

When I restart my Emby Server on my QNAP everything works fine with the usual speed. I have no idea when things start to get worse, I would have to copy 24/7 a big file to my server just to find out when this is going to begin to happen - this doesn't seem like a good way to track things tbh. Any suggestions?

[Luke 42077]

Is it something you can zip up and attach here, or PM to me?

[Tormentor667 16]

How would I do that? I mean, what do you need to bugtrack that?

[Luke 42077]

7 minutes ago, Tormentor667 said:

How would I do that? I mean, what do you need to bugtrack that?

Just locate the original log file, zip it up and attach it here:

How to Report a Problem

Does that help?

[Tormentor667 16]

I know how this works but I wonder from when should I attach the LOG? Just the latest one? Because I can't really tell when the problem is starting to happen. I can only say that the speed is perfect when I restart the Emby server on my QNAP - at least for a specific time window.

[Luke 42077]

25 minutes ago, Tormentor667 said:

I know how this works but I wonder from when should I attach the LOG? Just the latest one? Because I can't really tell when the problem is starting to happen. I can only say that the speed is perfect when I restart the Emby server on my QNAP - at least for a specific time window.

As soon as you experience the problem again, then I would suggest grabbing the latest log file at that time.