Server Version#: 1.19.4.2865 on Windows 10 x64 Enterprise.
Player Version#: 4.30.2 (local Web)
For several versions of PMS I have been suffering from the TV Shows Library being scanned over & over. The scan is very slow as well, and it takes the CPU to 95-100% utilisation continuously.
The TV files are on an external Windows server share, accessed over SMB.
There are 18973 episodes in the Library.
What other information is needed to troubleshoot this situation?
Scanning for TV show introductions?
Is anything displayed under the Activity icon in Plex Web?
Example of Activity icon in this post:
Yes - its spinning all the time. And the Alerts screen is slowly scrolling with each folder listed, and then “Scanning TV Shows” repeated in between.
Slow scanning:
Status icon:
This is still happening every hour or so.
Any ideas why PMS keeps re-scanning (very slowly, using all the CPU) my TV Shows library over & over?
It doesn’t matter if I cancel the scan either - it just continues on doing it:
There is something wrong with the scanner or whatever. I’ve not seen this behaviour before. When a new episode is added to a TV Show folder, PMS appears to re-scan the whole show.
This image shows page 34 of 50 for the Alerts, just after a new episode of House Rules (AU) S08E28 was added to the library (actually added at 12h30). So while PMS was still scanning the entire Library (e.g. X-Files), it detected the new episode, and started scanning the entire HR (AU) folder - all seasons:
On page 29 you can see Season 07 was scanned & processed:
Page 1 looks like this:
Is some other process scanning/modifying the file system, making Plex think the library has been updated?
Maybe check Settings -> Library for library scan interval or other settings that might cause such behaviour.
To diagnose, turn off things such as scan for intros, auto scan, scan on changes, etc. See when the scanning stops. That will help determine where the problem lies.
I don’t think so. The new episodes should be the only thing writing to the Library.
These are my current settings:
Do you think it would pay to turn off all scanning options and see if it stops?
That’s all I can think of. But honestly, I’m grasping at straws. I don’t see anything close to this with my server. I admittedly have just a couple hundred TV episodes, not 18K+.
Maybe pull log files and post to the thread. No idea what to look for in the logs. Maybe somebody will see something. Make sure you’re set for debug logs. Verbose causes the logs to wrap quickly and desired info is lost.
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