Synology memory usage (not DNLA)

Server Version#:Version Version 1.19.1.2621
Player Version#:Version 1.6.5.1097-3bb9dc68

I would appreciate some assistance finding my recent high RAM utilization. I have 64GB installed, and in the past I would find the majority of it allocated to cache. This made sense, it was using RAM to cache files to improve performance. now, after a few days, it all is used. There must be a leak somewhere as now I see it all tagged as “used”

I am not sure it is PLEX to be honest, at free and top don’t help me see its usage


top shows a few processes all using .2% or less each
not a docker app

What can use memory and not show it in “top”? Maybe a driver w a memory leak?
only way I found so far to free it up is a NAS restart.

I created a playlist of all my movies (approx 1500 hours)
That playlist is now running on the AppleTV (with TV off)
Memory utilization is currently holding at 2.9 GB
I will let it play and observe

I do have an LG TV, and I often use the built in LG WEB OS plex app, but I do not have DNLA enabled at my PLEX server.

I checked the processes in Task manager and nothing seems to be using it, yet is it used :slight_smile:

Thanks for the suggestion. … I will try that test later. That being said, with everyone at home for COVID-19 social distancing … The chances I can get the main household TV off for any length of time these days … :slight_smile: pretty slim.

Interesting to consider the LG as part of this, I had not thought about that. I know just yesterday the WEB-OS and the PLEX app itself had updates… this problem pre-dates that thou …

Beating on the support staff in the process , I might add
:rofl:

If turning off the TV for my local family was problematic, turning it off for remote family might be dangerous :slight_smile:
sure I have spare systems I could run it on, but that means training them to pick that other server…

Since you brought up the LG TV, it does actually have a problem, but one that I have had for so long I just learned to live with it. The first time you run plex after TV power up, the server times out. you just need to enter a library and retry once, it works everytime. Again long term issue, so I doubt its related but …

Chuck, hey now, I was just looking for advice on how to tie memory use to a process when the normal tools didn’t show anything :slight_smile:

The NAS reboots fast enough that I can and actually just did , do. most plex users buffer enough that its OK-ish. anyway, as expected, ram use dropped down to a few GB.

Most of the other apps are in docker and can be disabled. I can/have been doing that type of troubleshooting.

shutting down the docker containers didn’t help
shutting down plex media server didnt help
updating the plex media server (syno package) didn’t even clear up the RAM use.

None of that shocked me as top showed none of those processes using that much RAM. but plex does include video drivers, for hw transcode, that has been seeing changes lately and other problems… thus I was postulating maybe this is a place you can have a memory leak and not see it assigned to anything in top, while still being “used”

There is one way to properly see what’s happening and that’s get in at the command line and run top.

top will let us look at the RSS (Resident) memory in use by every program

hmmm Well it has been two days and my memory “used” seems to have stabilized. fortunate from the perspective that nothing seems broken, but I sure would have likes to learn what can lead to memory that is “used” but doesn’t appear tied to a process in “top.”

I’ve been running PMS continuously for 48 hours now. zero increase in resident memory usage here either.

Sorry to hijack this thread but I updated to server version 1.19.1.2645 from version 1.18.something and I’m seeing about double the memory usage from Plex server as previously. Was about 1.8GB and it’s currently at 3.7GB, shown through DSM task manager.

This is non-docker instancr running on a Synology DS1019+. It has 8GB total memory. Total Nas memory usage is sitting at about 80% used, before the Plex update it used to be consistently somewhere around 55%.

I haven’t changed anything on the Nas other than update to the new version. DNLA has always been disabled within Plex
The clients we use are Android (phones) and Android TV (Nvidia shield), those have not changed other than Play store app updates, currently on. 7.31.0.16802.

I don’t think [quote=“Gavin-Ashford, post:16, topic:567438”]
Sorry to hijack this thread
[/quote]

Maybe make you own, as my system has stabilized, it must have been another app in a docker container with a memory leak or something.
I should close this one

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