How to troubleshoot SCALE - Nextcloud App Performance

[pvuchetich]

Is there a reference for how to troubleshoot performance issues with TrueNAS SCALE + Nextcloud?
I have used TrueNAS CORE for a long time, and finally trying out TrueNAS SCALE, and have not used Docker other than on the desktop to test applications.
It seems that something is "stuck", but I don't know where to look.

I installed TrueNAS-SCALE-22.12.2, and Nextcloud 26.0.1_1.6.25 according to the guide (note - after first install attempt didn't work, chose to NOT include ffmpeg per commentary on TrueNAS Discord discussion)

Adding Nextcloud for Media Previews

Provides instructions to configure TrueNAS SCALE and install Nextcloud to support hosting a wider variety of media file previews such as HEIC, Mp4 and MOV files.

www.truenas.com

Symptom: When connecting to Nextcloud from other computers on the LAN, using a timer on my phone, it took over 3 minutes to switch from "files" to "dashboard", and similar time to switch to photos, and over a minute to open one of the default photos. There is no delay when interacting with the TrueNAS SCALE UI.

The hardware is a fresh bare metal install on an older development-level machine: Intel(R) Xeon(R) CPU E5-1620 @ 3.60GHz (4 cores), 128 GB RAM, mirrored 240 GB SATA SSD pool for TrueNAS, mirrored 240 GB SATA SSD for data.

The readily accessible performance measures are all low - CPU usage < 10% (average load of 0.29, max of 1.38), only 6 GB RAM used (note - new install, so ZFS cache has only used a little so far), and disk usage looks low - about 20 tps when running iostat from the shell, and 300 KB/sec written per SCALE reporting UI. Almost no read activity on the disk (nearly 100% ZFS ARC hits).

The SCALE-Nextcloud App logs aren't flooded with messages or obvious errors- the postgresql log ends with "LOG: database system is ready to accept connections".
The nextcloud log looks mostly automatic healthchecks and limited activity from my logins slowly scrolling.

This is the point I am stuck - is there a reference of where to look for performance issues in the app? The fact that it takes (literally) minutes suggests that something is failing and timing out, but I don't know where specifically to look due to inexperience with SCALE + Docker and Nextcloud.

 

[pvuchetich]

Update - Using the Nextcloud Admin account, I disabled everything under the "App bundles", but left the rest of the "active apps" alone. The user experience immediately improved to essentially "immediately" when switching between files/photos/activity apps (the only 3 remaining on the top menu). I do not yet know which app was the troublemaker, but this points to a misbehaving app that is probably hitting a timeout failure of some sort. Therefore this appears to be more likely a Nextcloud config error than a SCALE/Docker error. I'll check on the Nextcloud forums, log files, or enable one app at a time.

 

[rokyo]

I have exactly the same problem:

TrueNAS Scale 22.12
NextCloud 26

For me, disabling Collabora Online App inside NextCloud fixed the performance issues. As soon as I re-enable it, everything take 5 minutes to load again...