6.7.2 cache drive writes constantly

[nerbonne]

I've been having issues with slow performance on my unRaid system.  I started shutting down apps, mainly qbittorrent.  Then I noticed that even with all apps off except Plex, the cache drive, which is a 500Gb SSD, is being written to at about 6-10 MB/s.  Only a few KB/s of reads and the array isn't doing anything.  This goes on constantly.  Doesn't seem like this can be right?  How can I see what is being written?

[itimpi]

You could try installing the File Activity plugin.

 

Have you tried stopping Plex to see if that is the culprit?

[nerbonne]

File Activity plugin doesn't show any activity.  When I stop Plex, the cache drive goes silent.  So I guess it's Plex.  But what does that mean?

[John_M]

22 minutes ago, nerbonne said:

So I guess it's Plex.

Is it configured to generate video preview thumbnails? That produces huge quantities of data. https://support.plex.tv/articles/202197528-video-preview-thumbnails/

[nerbonne]

Generate video preview thumbnails was and is set to "never".

[nerbonne]

Seems like it was the specific Plex that I was using.  I was using the official plex app.  I removed it and installed the linuxserver.io plex app, now there is no more excessive cache writing.

[N385]

On 11/5/2019 at 12:07 AM, nerbonne said:

Seems like it was the specific Plex that I was using.  I was using the official plex app.  I removed it and installed the linuxserver.io plex app, now there is no more excessive cache writing.

Plex has been doing this to my server also.

Did the new version of plex accept the old appdata or did you do a fresh install?

I wouldn't want to manually edit my watch history and customizations...