On some servers (running ubuntu 18.04) I have a process "systemd --user" that uses ~10% of the CPU in average. Only the root user needs to start services.
Is this process really needed and how can I disable it?
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You can disable it by disabling the
However, you also thereby lose the automatic setting of the
XDG_RUNTIME_DIR environment variable, creation of a per-user runtime directory, and creation of certain control groups, as well, note.
You'll have to gauge how much of a loss this is.