gistfile1.txt

The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.

network-online.target @2min 9.001s
└─dnsmasq.service @8.972s +70ms
  └─network.target @8.940s
    └─systemd-networkd.service @8.500s +439ms
      └─network-pre.target @8.471s
        └─ip6tables.service @8.406s +63ms
          └─basic.target @8.404s
            └─dbus-broker.service @8.377s +25ms
              └─dbus.socket @8.367s
                └─sysinit.target @8.364s
                  └─systemd-timesyncd.service @8.326s +38ms
                    └─systemd-tmpfiles-setup.service @8.193s +89ms
                      └─local-fs.target @8.162s
                        └─run-docker-netns-2ed24aa597d2.mount @2min 12.617s
                          └─local-fs-pre.target @1.015s
                            └─systemd-tmpfiles-setup-dev.service @989ms +25ms
                              └─systemd-sysusers.service @947ms +41ms
                                └─systemd-tmpfiles-setup-dev-early.service @871ms +49ms
                                  └─kmod-static-nodes.service @845ms +19ms
                                    └─systemd-journald.socket @838ms
                                      └─system.slice @797ms
                                        └─-.slice @797ms