Plex Media Scanner high CPU

Server Version#: 1.15.3.876
Player Version#: 3.83.1

Just updated plex server last night to the latest version and got an alert this morning that it’s using up a lot of CPU. Not sure what is going on. Any advice would be appreciated. I tried restarting the service a few times to see if it was just something stuck but that doesn’t seem to be the case. Plex Media Server Logs_2019-04-22_07-33-40.zip (1.2 MB)

Similar to @wwilsonxp, since updating to 1.15.3.876 I am also seeing high CPU use by Plex Media Server, but only on one core at a time. It lasts for about a minute per core, then switches sequentially.
This also occurs when the server is idle (no scan, no active play sessions).
I have tried restarting the service and also rebooting the system, but to no avail.

As Engineering makes changes, there are times when the scanner will invoke the updated analysis path. During this pass, if there is previously unfinished work to be done, it will do it. A big user of resources is chapter index file generation. This is the most likely suspect .

Hi, I’m on the same version of Plex as well and having the same issue.

OS is Ubuntu 18.10 and at first it looked like the solution could be found here:

But neither disabling UPnP nor installing 1.14.0 or earlier did the job. I’m still getting massive CPU usage to the point the machine is almost unusable.

Does this mean I should just let it do its thing? Admittedly, I only recently reinstalled PMS and the scanner has only been running for about an hour and a half (though, I did experience this issue before and it lasted days which is why I removed it).

How long do you think should I wait and what else can I do to gather more data about this issue?

I’ve been having a similar issue but it doesn’t seem specific to this version of Plex Media Server… Its been doing it for months and through multiple updates. Media scanner is just crushing a single core nonstop. disabling UPnP has done nothing

As Engineering makes changes, there are times when the scanner will invoke the updated analysis path. During this pass, if there is previously unfinished work to be done, it will do it. A big user of resources is chapter index file generation. This is the most likely suspect .

@ChuckPa This isn’t a super helpful answer. The scanner is running for literally weeks at a time with no files having been added or changed. If this was something that would be resolved by just “letting it go”, it would have happened a long time ago

@Ohenn

Please provide me with DEBUG log files, ZIP captured while it’s scanning, and I will examine them.

Also please let me know how many media files, (totals for each type) the scanner has to process.

Also please show me how you have a movie and a tv episode file named (actual example including extension)

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