Plex NAS Server extreme memory use

Plex Media Server NAS & Devices
1

Server Version#: 1.23.2.4656
Player Version#: N/A

Since a couple of days I have Plex server taking up 1GB more of RAM on my x86 Qnap NAS with 2GB RAM. none of the qnap processes take more than a ~ 80 MB of RAM. I downloaded the logs from the server but so far did not find the culprit, any idea where (what log file,…) to look?

2

Be careful what you look at.

There are two values. One is important, the other is.

  1. Virtual Size = How much the program allocated to itself (may not be in use)
  2. Resident Size = How much physical memory is actually in use.

QNAP Resource Monitor shows Resident Size.

Screenshot from 2021-06-08 03-32-14
Screenshot from 2021-06-08 03-32-141371×365 63.9 KB

This server has been running for over 2 weeks and is part of my daily testing.

It’s “Virtual size” is 1.2 GB. As you can see, it’s Resident Size is about 200 MB.

I also have a TS-128A , with 1GB memory. PMS runs just fine in it other than being a single-disk ARMv8 development system)

3

Thanks for your reply! Looking in my Resource monitor, I see 1.17 GB resident size. I suspect it has something to do with Plex’s internal scheduled tasks; directly after NAS reboot I am at around 160 MB resident size but the next day the NAS becomes unresponsive, the HDDs are working 100% and Plex’s resident memory climbs to 1GB+. This has started a couple of days back, prior to that I never had an issue.

4

If PMS is generating Chapter Thumbnails then it’s resident size will grow for the duration.

It explains why the HDDs are so busy.

There was a bug in the previous versions which I found and Engineering was just now able to fix in this release.

the bug was:

  1. Create a library section
  2. Analysis starts
  3. Thumbnails start
  4. If anything interupted this, PMS would never restart & complete the task.

Now, PMS will catch up all that work.

I will need your DEBUG log files ZIP to confirm what’s happening.

1 Like
5

I have uploaded the logs I captured AFTER I rebooted the NAS. Prior to reboot it was impossible to gather them.

Thank you!

6

going through the logs I noticed a name of one the series come up way too often - after deleting the folder, the problem disappears. I don’t know where exactly is the problem (corrupt file? unsupported file?) but the memory load is gone.

7

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.