Control group /:
-.slice
|-user.slice 
| `-user-0.slice 
|   |-session-1.scope 
|   | |- 908 login -- root
|   | |- 936 -bash
|   | |- 988 /usr/bin/python3 -s /usr/sbin/sos report --batch
|   | |-1321 timeout 300s lsinitrd
|   | |-1323 /usr/bin/bash /usr/bin/lsinitrd
|   | |-1335 /usr/bin/bash /usr/bin/lsinitrd
|   | |-1337 gzip -cd -- /boot/initramfs-5.11.12-300.fc34.x86_64.img
|   | |-1339 cpio --extract --verbose --quiet --to-stdout -- lib64/dracut/dra...
|   | |-1409 timeout 300s chronyc sourcestats
|   | |-1411 chronyc sourcestats
|   | |-1454 timeout 300s systemd-cgls
|   | `-1461 systemd-cgls
|   `-user@0.service ...
|     `-init.scope 
|       |-927 /usr/lib/systemd/systemd --user
|       `-929 (sd-pam)
|-init.scope 
| `-1 /usr/lib/systemd/systemd --switched-root --system --deserialize 31
`-system.slice 
  |-irqbalance.service 
  | `-735 /usr/sbin/irqbalance --foreground
  |-abrt-journal-core.service 
  | `-775 /usr/bin/abrt-dump-journal-core -D -T -f -e
  |-systemd-udevd.service 
  | |- 602 /usr/lib/systemd/systemd-udevd
  | |-1261 /usr/lib/systemd/systemd-udevd
  | |-1401 /usr/lib/systemd/systemd-udevd
  | `-1458 /usr/lib/systemd/systemd-udevd
  |-dbus-broker.service 
  | |-725 /usr/bin/dbus-broker-launch --scope system --audit
  | `-730 dbus-broker --log 4 --controller 9 --machine-id f8438940479a4151acd...
  |-systemd-homed.service 
  | `-758 /usr/lib/systemd/systemd-homed
  |-polkit.service 
  | `-874 /usr/lib/polkit-1/polkitd --no-debug
  |-chronyd.service 
  | `-741 /usr/sbin/chronyd
  |-auditd.service 
  | |-696 /sbin/auditd
  | `-698 /usr/sbin/sedispatch
  |-abrt-xorg.service 
  | `-777 /usr/bin/abrt-dump-journal-xorg -fxtD
  |-ModemManager.service 
  | `-731 /usr/sbin/ModemManager
  |-systemd-journald.service 
  | `-586 /usr/lib/systemd/systemd-journald
  |-atd.service 
  | `-896 /usr/sbin/atd -f
  |-sshd.service 
  | `-797 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
  |-NetworkManager.service 
  | `-786 /usr/sbin/NetworkManager --no-daemon
  |-gssproxy.service 
  | `-800 /usr/sbin/gssproxy -D
  |-rsyslog.service 
  | `-738 /usr/sbin/rsyslogd -n
  |-abrtd.service 
  | `-761 /usr/sbin/abrtd -d -s
  |-firewalld.service 
  | `-734 /usr/bin/python3 -s /usr/sbin/firewalld --nofork --nopid
  |-systemd-userdbd.service 
  | |-922 /usr/lib/systemd/systemd-userdbd
  | |-923 systemd-userwork
  | |-924 systemd-userwork
  | `-925 systemd-userwork
  |-sssd.service 
  | |-747 /usr/sbin/sssd -i --logger=files
  | |-782 /usr/libexec/sssd/sssd_be --domain implicit_files --uid 0 --gid 0 -...
  | `-783 /usr/libexec/sssd/sssd_nss --uid 0 --gid 0 --logger=files
  |-system-dbus\x2d:1.3\x2dorg.freedesktop.problems.slice 
  | `-dbus-:1.3-org.freedesktop.problems@0.service 
  |   `-1122 /usr/sbin/abrt-dbus -t133
  |-systemd-oomd.service 
  | `-694 /usr/lib/systemd/systemd-oomd
  |-systemd-resolved.service 
  | `-695 /usr/lib/systemd/systemd-resolved
  |-systemd-logind.service 
  | `-784 /usr/lib/systemd/systemd-logind
  `-abrt-oops.service 
    `-776 /usr/bin/abrt-dump-journal-oops -fxtD
