Plex Server Showing Spikey CPU Usage

Plex Media Server NAS & Devices
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@wwoolrich

OH MY! “Lucy, you got some splainin’ to do!” :slight_smile:

Could not read ‘/var/packages/PlexMediaServer/shares/PlexMediaServer/AppData/tmp/pms-e447d2ab-37ca-4034-999f-4a546825de6f/EasyAudioEncoder/Convert to WAV (to 8ch or less)/0deee64e-38f2-4e03-8cab-48f606e21b83_5970-0-3443.wav’
Jan 14, 2024 15:17:21.001 [140624016137016] ERROR - [Req#2a8b5d/Transcode/0deee64e-38f2-4e03-8cab-48f606e21b83/5b1ba2b9-0826-408e-9c5b-3f0c24d38a3f] [eac3_eae @ 0x7ff1eda8a5c0] error reading output: -5 (I/O error)
Jan 14, 2024 15:17:21.002 [140624035969848] ERROR - [Req#2a8b5e/Transcode/0deee64e-38f2-4e03-8cab-48f606e21b83/5b1ba2b9-0826-408e-9c5b-3f0c24d38a3f] Error while decoding stream #0:1: I/O error
Jan 14, 2024 15:17:26.000 [140624011918136] ERROR - [Req#2a8b5f/Transcode/0deee64e-38f2-4e03-8cab-48f606e21b83/5b1ba2b9-0826-408e-9c5b-3f0c24d38a3f] [eac3_eae @ 0x7ff1eda8a5c0] EAE timeout! EAE not running, or wrong folder?

Background info

  1. Plex uses the ‘inotify’ kernel feature when transcoding Dolby. This is our only interface to their program (Dolby provided).

  2. On Synology, by default, DSM provides us with up to 65536 inotify-watchable folders.

  3. The error we see above occurs when that table fills (overflows) and there’s nothing left for the transcoder and EAE to use.

  4. The possible root causes are:

  • A lot of properly curated media (music is a common cause) and having simply overflowed the default table size

  • Accidentally pointing Plex at the wrong folders to monitor / search for media.

  • Placing media anywhere in the PlexMediaServer shared folder is primary cause and why there are warnings in 6 different languages

  • Accidentally making a typo when creating a library section where PMS tries to index the entire Syno or entire Volume.

  1. One of these is the cause. The task now is to figure out and correct it.

If you’re certain, and have double checked, that no media is misplaced and that all section folder pathnames are correct, then we will figure out how many folders we need to tell DSM to allow us to monitor and adjust the table size to match.

Here is the FAQ which tells you how to do this.

If you have ANY questions, please don’t hesitate to ask.