Plex falls alone

Hello,

For a few months now, plex has apparently fallen off on its own and it recovers on its own, let me explain. For example, it goes down but I have access to the physical server but not to the plex and after 3-4 minutes it recovers on its own and I have access again. It’s as if the communication is lost because when that happens it checks the service on the server and I see it up… Any idea?

Logs will hopefully indicate why

https://forums.plex.tv/t/help-us-help-you-how-to-provide-logs-to-get-your-problems-identified-and-hopefully-resolved/672904/2

At the moment I have already activated the debugging logs, to see if it happens again today I attach them. At the moment I attach the logs I have:

Yesterday (October 7) in the period from 11:00 p.m. to 11:30 p.m. I suffered another phantom fall and another recovery alone. This time, according to what they tell me, he recovered in 3 minutes. I attach the logs in debug mode:

It just happened to me right now, I upload the logs

Thank you… I found it.

You have hardware failing.

Please look here at the last line.

Oct 11, 2022 22:55:43.723 [0x7fe29fee2b00] DEBUG - [Req#1ecad] [Now] Device is Samsung (TV UE46H7000).
Oct 11, 2022 22:55:43.723 [0x7fe29fee2b00] DEBUG - [Req#1ecad] [Now] Profile is Samsung
Oct 11, 2022 22:55:43.723 [0x7fe29fee2b00] DEBUG - [Req#1ecad] [Now] Updated play state for /library/metadata/96343.
Oct 11, 2022 22:55:43.723 [0x7fe29fee2b00] DEBUG - [Req#1ecad] Statistics: (p7chvwllfnu5o) Reporting active playback in state 1 of type 4 (scrobble: 0) for account 26743638
Oct 11, 2022 22:55:43.724 [0x7fe2aab0db00] DEBUG - Completed: [83.38.28.101:53903] 200 GET /:/timeline?type=video&state=paused&time=1286884&duration=4050656&key=%2Flibrary%2Fmetadata%2F96343&ratingKey=96343&playQueueItemID=1198780&playQueueID=35505 (84 live) GZIP 3ms 629 bytes (pipelined: 508)
Oct 11, 2022 22:55:43.793 [0x7fe2a2724b00] DEBUG - [Req#1ecd3/Transcode/bce002c137adeb37-com-plexapp-android/1dcf6cae-da7d-471d-8c82-9d36efb09066] Transcoder segment range: 114 - 1164 (1164)
Oct 11, 2022 22:55:43.793 [0x7fe2a2724b00] DEBUG - [Req#1ecdc/Transcode/bce002c137adeb37-com-plexapp-android/1dcf6cae-da7d-471d-8c82-9d36efb09066] Transcoder segment range: 114 - 1165 (1164)
\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00

All those NULL characters are telling us what the OS thought it should print (which spot in memory) isn’t valid -OR- the HDD/SSD is failing or corrupted.

I would check the HDD/SSD first then start working on the server CPU & Memory (check for thermal overload – dust in the machine)

Thanks a lot! I get to work on it

Well, after reviewing the entire server and doing different tests, it is concluded that there is no hardware failure. Could there be any other cause for this error?

The last time I saw this without it being a hardware failure was with ESXi and a bug in the VMNET3 network driver. The problem was because Tx Offload and Rx Offload were faulty in the driver on Ubuntu.

The solution / workaround there was to change the network adapter to e1000e .

Is this in a VM or is it native on the host?

It is native on the host, how can I change that option? Can it be done via software? I actually have ubuntu installed.

Make certain all the updates are applied and restarted after updates

If you’re using a plug-in network card, power off, reseat the card and then power on again.

After updates I always reboot and no, I don’t have a plug-in card. Any other solution?

Motherboard firmware (BIOS / UEFI)

Also check ethtool . ethtool shows you and allows you to set features on the card.

If the board has a ‘cheap’ chip on it and the Ubuntu driver has a flaw, try getting around it by changing those defaults.

There will be experimentation required.

It’s very clear, A string of null bytes is a hard kernel panic which should never occur. Such things are when the kernel faults while handling one of its one tasks (e.g. Page faults while paging application memory or a device driver points to memory not allocated to its process, and other memory access violations)

But it is that this did not happen before, surely it is not a problem of Plex and the management that it does? I’ve been talking to other people in the world and the same thing happens to them, the Plex goes away and comes back all the time.

On the premise there is a PMS problem, Can you install the previous version ?

If it’s a PMS fault then it’s best we find it right now.

After downgrading to the previous version, use it normally and see if it happens again.

I have downgraded several versions back, since this has been happening for 3-4 versions. I have put the 1.28.1.6092. I’ll keep reporting if this keeps happening. If it happens I will get other logs. Thank you

It just happened to me again and with hardly any traffic, there was only one person viewing.

There was no crash.

The server was commanded to shut down here:

(17 live) TLS GZIP 4ms 494 bytes (pipelined: 84)
Oct 17, 2022 08:29:40.625 [0x7f21da211b00] DEBUG - Shutting down with signal 15 (Terminated)
Oct 17, 2022 08:29:40.625 [0x7f21da211b00] DEBUG - Ordered to stop server.
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Stopping server...
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - HttpServer: Stopping server.
Oct 17, 2022 08:29:40.625 [0x7f21d9ad0b00] DEBUG - MetadataItemClusterRequestHandler: a shutdown event has been received
Oct 17, 2022 08:29:40.625 [0x7f21d9ad0b00] DEBUG - TranscodeJobManager: [Running] onServerShutdown
Oct 17, 2022 08:29:40.625 [0x7f21d9ad0b00] DEBUG - TranscodeJobManager: [Running] -> [Shutdown]
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Server stopped.
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Killing job.
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Signalling job ID 5139 with 9
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Job was already killed, not killing again.
Oct 17, 2022 08:29:40.625 [0x7f21de1c91c0] DEBUG - Stopping transcode session 557c202c4403318b-com-plexapp-android
Oct 17, 2022 08:29:40.625 [0x7f21d2738b00] DEBUG - Cleaning directory for session 557c202c4403318b-com-plexapp-android (/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache/Transcode/Sessions/plex-transcode-557c202c4403318b-com-plexapp-android-532bc0ca-2a0a-4e31-a7e6-131367950dab)
Oct 17, 2022 08:29:40.626 [0x7f21de1c91c0] DEBUG - Transcoder: Cleaning old transcode directories.
Oct 17, 2022 08:29:40.626 [0x7f21de1c91c0] DEBUG - Transcoder: Cleaning old transcode directory: "/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache/Transcode/Sessions/plex-transcode-557c202c4403318b-com-plexapp-android-532bc0ca-2a0a-4e31-a7e6-131367950dab"
Oct 17, 2022 08:29:40.633 [0x7f21da211b00] DEBUG - Jobs: '/usr/lib/plexmediaserver/Plex Transcoder' exit code for process 5139 is -9 (signal: Killed)
Oct 17, 2022 08:29:40.634 [0x7f21de1c91c0] DEBUG - Whacked session 557c202c4403318b-com-plexapp-android, 0 remaining.
Oct 17, 2022 08:29:40.634 [0x7f21de1c91c0] DEBUG - Killing plug-ins.
Oct 17, 2022 08:29:40.646 [0x7f21de1c91c0] DEBUG - [com.plexapp.system] Killing.
Oct 17, 2022 08:29:40.648 [0x7f21da211b00] WARN - JobManager: Could not find job for handle 1398
Oct 17, 2022 08:29:40.649 [0x7f21de1c91c0] DEBUG - ChildProcessMonitor: Waiting for Plex Tuner Service to exit.
Oct 17, 2022 08:29:40.649 [0x7f21de1c91c0] DEBUG - [JobRunner] Signalling job ID 1463 with 2
Oct 17, 2022 08:29:40.708 [0x7f21da211b00] DEBUG - Jobs: '/usr/lib/plexmediaserver/Plex Tuner Service' exit code for process 1463 is 0 (success)
Oct 17, 2022 08:29:40.708 [0x7f21d34b9b00] DEBUG - [ChildProcessMonitor] Plex Tuner Service exited.
Oct 17, 2022 08:29:40.709 [0x7f21de1c91c0] DEBUG - Database: Shutting down.
Oct 17, 2022 08:29:40.730 [0x7f21de1c91c0] DEBUG - Database: Shutting down.

and also here.

(19 live) TLS GZIP 2ms 454 bytes (pipelined: 1092)
Oct 17, 2022 04:45:01.391 [0x7fe2374f3b00] DEBUG - Shutting down with signal 15 (Terminated)
Oct 17, 2022 04:45:01.391 [0x7fe2374f3b00] DEBUG - Ordered to stop server.
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Stopping server...
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - HttpServer: Stopping server.
Oct 17, 2022 04:45:01.391 [0x7fe236db2b00] DEBUG - MetadataItemClusterRequestHandler: a shutdown event has been received
Oct 17, 2022 04:45:01.391 [0x7fe236db2b00] DEBUG - TranscodeJobManager: [Running] onServerShutdown
Oct 17, 2022 04:45:01.391 [0x7fe236db2b00] DEBUG - TranscodeJobManager: [Running] -> [Shutdown]
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Server stopped.
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Killing job.
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Signalling job ID 10983 with 9
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Job was already killed, not killing again.
Oct 17, 2022 04:45:01.391 [0x7fe23b4ab1c0] DEBUG - Stopping transcode session e8uyhcld3pd4ign0lxdcw49m
Oct 17, 2022 04:45:01.392 [0x7fe22eaceb00] DEBUG - Cleaning directory for session e8uyhcld3pd4ign0lxdcw49m (/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache/Transcode/Sessions/plex-transcode-e8uyhcld3pd4ign0lxdcw49m-f6472e33-e893-4338-9bc0-76df84a4b7e0)
Oct 17, 2022 04:45:01.393 [0x7fe23b4ab1c0] DEBUG - Transcoder: Cleaning old transcode directories.
Oct 17, 2022 04:45:01.394 [0x7fe23b4ab1c0] DEBUG - Transcoder: Cleaning old transcode directory: "/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache/Transcode/Sessions/plex-transcode-e8uyhcld3pd4ign0lxdcw49m-f6472e33-e893-4338-9bc0-76df84a4b7e0"
Oct 17, 2022 04:45:01.396 [0x7fe23b4ab1c0] DEBUG - Whacked session e8uyhcld3pd4ign0lxdcw49m, 0 remaining.
Oct 17, 2022 04:45:01.396 [0x7fe23b4ab1c0] DEBUG - Killing plug-ins.
Oct 17, 2022 04:45:01.413 [0x7fe23b4ab1c0] DEBUG - [com.plexapp.system] Killing.
Oct 17, 2022 04:45:01.415 [0x7fe2374f3b00] WARN - JobManager: Could not find job for handle 1402
Oct 17, 2022 04:45:01.416 [0x7fe23b4ab1c0] DEBUG - ChildProcessMonitor: Waiting for Plex Tuner Service to exit.
Oct 17, 2022 04:45:01.416 [0x7fe23b4ab1c0] DEBUG - [JobRunner] Signalling job ID 1470 with 2
Oct 17, 2022 04:45:01.464 [0x7fe2374f3b00] DEBUG - Jobs: '/usr/lib/plexmediaserver/Plex Tuner Service' exit code for process 1470 is 0 (success)
Oct 17, 2022 04:45:01.464 [0x7fe23066ab00] DEBUG - [ChildProcessMonitor] Plex Tuner Service exited.
Oct 17, 2022 04:45:01.466 [0x7fe23b4ab1c0] INFO - Killing process: Plex EAE Service (pid: 1515)
Oct 17, 2022 04:45:01.466 [0x7fe23b4ab1c0] DEBUG - Killing job.
Oct 17, 2022 04:45:01.466 [0x7fe23b4ab1c0] DEBUG - Signalling job ID 1515 with 9
Oct 17, 2022 04:45:01.474 [0x7fe23b4ab1c0] DEBUG - Database: Shutting down.
Oct 17, 2022 04:45:01.486 [0x7fe2374f3b00] DEBUG - Jobs: '/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Codecs/EasyAudioEncoder-1785-linux-x86_64/EasyAudioEncoder/EasyAudioEncoder' exit code for process 1515 is -9 (signal: Killed)
Oct 17, 2022 04:45:01.495 [0x7fe23b4ab1c0] DEBUG - Database: Shutting down.

Do these correlate to anything?

The one at 4:45 is a planned restart, the one at 8 in the morning is surely a shutdown or restart of the Plex service? Because it would match the downgrade

The unexpected fall has been around 10:40-10:50

For the entire duration 10:40 - 10:50, there was continuous playback activity.

It is running so smoothly that I can see blocks of data being sent to one user every 10 seconds.

Are you possibly saturating your internet ?
I find it extremely unlikely you’re saturating the CPU