Analyze boot time systemd

Draw boot dependency graph systemd-analyze dot --require | dot -Tsvg > boot.svg && open boot.svg Create a simple service unit cat > /etc/systemd/system/myapp.service <<EOF [Unit] Description=My App After=network.target [Service] ExecStart=/usr/bin/myapp Restart=always RestartSec=5 User=appuser [Install] WantedBy=multi-user.target EOF Run one-shot as another user systemd-run --uid=1000 --gid=1000 --wait /usr/bin/myapp --task Create systemd timer cat > /etc/systemd/system/backup.timer <<EOF [Unit] Description=Daily backup [Timer] OnCalendar=daily Persistent=true [Install] WantedBy=timers.target EOF Set memory limit on service systemctl set-property myapp.service MemoryMax=512M CPUQuota=50%