Tracker miners (for example tracker-miner-fs-3) are started for GDM, lightdm, other system users, and waste RAM + SSD resources. I don't think tracker miners should be started for such users.
At https://bugs.debian.org/981089 I've found solution how to fix this important issue - I'm pasting with trivial change to work on Ubuntu 22.04 and newer:
The fix is to change one line in all tracker-miners systemd files:
/usr/lib/systemd/user/tracker-miner-fs-3.service
/usr/lib/systemd/user/tracker-miner-fs-control-3.service
/usr/lib/systemd/user/tracker-extract-3.service
From: ConditionUser=!root
To: ConditionUser=!@system
On running system you can run simple sed command:
sed -i 's|ConditionUser=!root|ConditionUser=!@system|' /usr/lib/systemd/user/tracker-{extract-3,miner-fs-*}.service
I can provide a debdiff if you can include this trivial patch into LTS release.
The attachment "disable tracker-miners for system-users - patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.
[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]