Control group /:
-.slice
|-user.slice 
| `-user-500.slice 
|   |-user@500.service ...
|   | |-session.slice 
|   | | |-plasma-ksmserver.service 
|   | | | `- 3816 /usr/lib/kf5/bin/ksmserver
|   | | |-plasma-kwin_x11.service 
|   | | | `- 3821 /usr/lib/kf5/bin/kwin_x11 --replace
|   | | |-plasma-kded.service 
|   | | | |- 3818 /usr/lib/kf5/bin/kded5
|   | | | `- 3917 /usr/bin/xsettingsd
|   | | |-plasma-plasmashell.service 
|   | | | |- 3862 /usr/lib/kf5/bin/plasmashell --no-respawn
|   | | | `- 4119 /usr/bin/pulseaudio --start --log-target=syslog
|   | | `-dbus.service 
|   | |   `- 3768 /bin/dbus-daemon --session --address=systemd: --nofork --no...
|   | |-background.slice 
|   | | |-plasma-kactivitymanagerd.service 
|   | | | `- 3881 /usr/libexec/kf5/kactivitymanagerd
|   | | |-plasma-polkit-agent.service 
|   | | | `- 3884 /usr/libexec/kf5/polkit-kde-authentication-agent-1
|   | | |-plasma-kscreen.service 
|   | | | `- 4027 /usr/libexec/kf5/kscreen_backend_launcher
|   | | |-plasma-xembedsniproxy.service 
|   | | | `- 3886 /usr/lib/kf5/bin/xembedsniproxy
|   | | |-plasma-kglobalaccel.service 
|   | | | `- 3854 /usr/lib/kf5/bin/kglobalaccel5
|   | | |-plasma-gmenudbusmenuproxy.service 
|   | | | `- 3883 /usr/lib/kf5/bin/gmenudbusmenuproxy
|   | | `-plasma-powerdevil.service 
|   | |   `- 3885 /usr/libexec/kf5/org_kde_powerdevil
|   | |-app.slice 
|   | | |-app-org.kde.kdeconnect.daemon@autostart.service 
|   | | | `- 4006 /usr/libexec/kf5/kdeconnectd
|   | | |-app-org.kde.discover.notifier@autostart.service 
|   | | | `- 4020 /usr/libexec/DiscoverNotifier
|   | | |-app-kaccess@autostart.service 
|   | | | `- 4014 /usr/lib/kf5/bin/kaccess
|   | | |-app-org.kde.plasma\x2dwelcome@autostart.service 
|   | | | `- 4024 /usr/lib/kf5/bin/plasma-welcome
|   | | |-dconf.service 
|   | | | `- 3904 /usr/libexec/dconf-service
|   | | |-app-kf5\x2dorg.kde.konsole-1336cdcecb54461b8b74d5ceffe42763.scope 
|   | | | |- 4363 /usr/bin/konsole --workdir /home/test
|   | | | |- 4375 /bin/bash
|   | | | |- 4403 su -
|   | | | `- 4409 -bash
|   | | |-ssh-agent.service 
|   | | | `- 3888 /usr/bin/ssh-agent -D -a /run/user/500/ssh-agent.socket
|   | | |-obex.service 
|   | | | `- 3800 /usr/libexec/bluetooth/obexd
|   | | `-app-org.kde.kalendarac@autostart.service 
|   | |   `- 4021 /usr/lib/kf5/bin/kalendarac
|   | `-init.scope 
|   |   |- 3649 /lib/systemd/systemd --user
|   |   `- 3651 (sd-pam)
|   |-session-3.scope 
|   | |- 3641 lightdm --session-child 12 19
|   | |- 3662 /usr/lib/kf5/bin/kwalletd5 --pam-login 8 9
|   | |- 3663 /usr/lib/kf5/bin/startplasma-x11
|   | |- 3708 ssh-agent -u
|   | `- 3724 /usr/bin/xauthority-hostname-updater -d
|   `-session-5.scope 
|     |- 4642 sshd: test [priv]
|     |- 4648 sshd: test@pts/1
|     |- 4649 -bash
|     |- 4688 su -
|     |- 4692 -bash
|     |- 5689 /usr/bin/python2.7 /usr/sbin/sosreport
|     |- 5821 timeout 300s systemd-cgls
|     `- 5822 systemd-cgls
|-init.scope 
| `- 1 /sbin/init splash
`-system.slice 
  |-rngd.service 
  | `- 2807 /usr/sbin/rngd -f
  |-nmb.service 
  | `- 3064 /usr/sbin/nmbd --no-process-group
  |-systemd-udevd.service 
  | |- 2586 /lib/systemd/systemd-udevd
  | |- 5803 (udev-worker)
  | |- 5806 (udev-worker)
  | `- 5807 (udev-worker)
  |-polkit.service 
  | `- 2803 /usr/libexec/polkit-1/polkitd --no-debug
  |-chronyd.service 
  | `- 3616 /usr/sbin/chronyd
  |-bluetooth.service 
  | `- 2795 /usr/libexec/bluetooth/bluetoothd
  |-accounts-daemon.service 
  | `- 2969 /usr/libexec/accounts-daemon
  |-wpa_supplicant.service 
  | `- 3117 /usr/sbin/wpa_supplicant -u
  |-lightdm.service 
  | |- 2943 /usr/sbin/lightdm
  | `- 2968 X -nolisten tcp :0 -seat seat0 -auth /run/lightdm/root/:0 -nolist...
  |-ModemManager.service 
  | `- 2885 /usr/sbin/ModemManager
  |-systemd-journald.service 
  | `- 2566 /lib/systemd/systemd-journald
  |-power-profiles-daemon.service 
  | `- 2805 /usr/lib/power-profiles-daemon
  |-sshd.service 
  | `- 2947 /usr/sbin/sshd -D
  |-crond.service 
  | `- 2938 /usr/sbin/crond -n
  |-colord.service 
  | `- 3632 /usr/libexec/colord
  |-NetworkManager.service 
  | `- 2922 /usr/sbin/NetworkManager --no-daemon
  |-ahttpd.service 
  | `- 2828 /usr/bin/guile --no-auto-compile /usr/sbin/ahttpd
  |-systemd-userdbd.service 
  | |- 2594 /lib/systemd/systemd-userdbd
  | |- 5429 systemd-userwork: waiting...
  | |- 5432 systemd-userwork: waiting...
  | `- 5448 systemd-userwork: waiting...
  |-rpcbind.service 
  | `- 2570 /sbin/rpcbind -w -l
  |-cups-browsed.service 
  | `- 2940 /usr/sbin/cups-browsed
  |-postfix.service 
  | |- 3463 /usr/libexec/postfix/master -w
  | |- 3464 pickup -l -t fifo -u -c
  | `- 3465 qmgr -l -t fifo -u -c
  |-cups.service 
  | |- 2925 /usr/sbin/cupsd -l
  | |- 3631 /usr/lib/cups/notifier/dbus dbus://
  | `- 4358 /usr/lib/cups/notifier/dbus dbus://
  |-smb.service 
  | |- 3130 /usr/sbin/smbd --no-process-group
  | |- 3147 /usr/sbin/smbd --no-process-group
  | `- 3151 /usr/sbin/smbd --no-process-group
  |-upower.service 
  | `- 3902 /usr/libexec/upower/upowerd
  |-alteratord.service 
  | `- 2788 /usr/bin/guile --no-auto-compile /usr/sbin/alteratord
  |-systemd-oomd.service 
  | `- 3350 /lib/systemd/systemd-oomd
  |-udisks2.service 
  | `- 3976 /usr/libexec/udisks2/udisksd
  |-acpid.service 
  | `- 2785 /usr/sbin/acpid -f -n
  |-dbus.service 
  | `- 2799 /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile...
  |-avahi-daemon.service 
  | |- 2791 avahi-daemon: running [host-192.local]
  | `- 2842 avahi-daemon: chroot helper
  `-systemd-logind.service 
    `- 2823 /lib/systemd/systemd-logind
