From bb150966c0687d2fa94da0a36dabba90c1a84b8b Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Tue, 23 Apr 2013 11:11:10 +0200
Subject: systemd-analyse: add "critical-chain" command
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"critical-chain" prints a tree of the critical chain of units

$ ./systemd-analyze critical-chain
graphical.target @1.226s
└─multi-user.target @1.226s
  └─nfs-lock.service @961ms +265ms
    └─rpcbind.service @958ms +1ms
      └─network.target @957ms
        └─NetworkManager.service @434ms +522ms
          └─basic.target @428ms
            └─sockets.target @428ms
              └─dbus.socket @428ms
                └─sysinit.target @427ms
                  └─systemd-tmpfiles-setup.service @411ms +15ms
                    └─local-fs.target @410ms
                      └─boot-efi.automount @410ms
                        └─boot.mount @397ms +9ms
                          └─local-fs-pre.target @192ms
                            └─systemd-udevd.service @187ms +5ms
                              └─systemd-udevd-control.socket @140ms
                                └─-.mount

With the "--fuzz=<ms>" parameter one can display more units around
the critical units.

$ ./systemd-analyze --fuzz=10ms critical-chain
└─multi-user.target @1.226s
  └─nfs-lock.service @961ms +265ms
    ├─rpcbind.service @958ms +1ms
    │ └─network.target @957ms
    │   └─NetworkManager.service @434ms +522ms
    │     ├─basic.target @428ms
    │     │ ├─sockets.target @428ms
    │     │ │ ├─dbus.socket @428ms
    │     │ │ │ └─sysinit.target @427ms
    │     │ │ │   ├─systemd-tmpfiles-setup.service @411ms +15ms
    │     │ │ │   │ └─local-fs.target @410ms
    │     │ │ │   │   └─boot-efi.automount @410ms
    │     │ │ │   │     └─boot.mount @397ms +9ms
    │     │ │ │   │       └─local-fs-pre.target @192ms
    │     │ │ │   │         └─systemd-udevd.service @187ms +5ms
    │     │ │ │   │           ├─systemd-udevd-control.socket @140ms
    │     │ │ │   │           │ └─-.mount
    │     │ │ │   │           └─systemd-udevd-kernel.socket @140ms
    │     │ │ │   └─swap.target @421ms
    │     │ │ │     └─dev-disk-by\x2duuid-....swap @414ms +6ms
    │     │ │ │       └─systemd-journald.socket
    │     │ │ ├─rpcbind.socket @428ms
    │     │ │ └─cups.socket @428ms
    │     │ ├─paths.target @428ms
    │     │ │ └─cups.path @428ms
    │     │ ├─timers.target @427ms
    │     │ │ └─systemd-tmpfiles-clean.timer @427ms
    │     │ └─sysinit.target @427ms
    │     │   └─...
    │     └─dbus.socket @428ms
    │       └─...
    └─network.target @957ms
      └─...
---
 shell-completion/bash/systemd-analyze | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'shell-completion/bash')

diff --git a/shell-completion/bash/systemd-analyze b/shell-completion/bash/systemd-analyze
index 8a4453d405..11276ef09c 100644
--- a/shell-completion/bash/systemd-analyze
+++ b/shell-completion/bash/systemd-analyze
@@ -31,6 +31,7 @@ _systemd_analyze() {
 
         local -A VERBS=(
                 [NO_OPTION]='time blame plot'
+                [CRITICAL_CHAIN]='critical-chain'
                 [DOT]='dot'
         )
 
@@ -57,6 +58,11 @@ _systemd_analyze() {
                         comps='--help --version --system --user'
                 fi
 
+        elif __contains_word "$verb" ${VERBS[CRITICAL_CHAIN]}; then
+                if [[ $cur = -* ]]; then
+                        comps='--help --version --system --user --fuzz'
+                fi
+
         elif __contains_word "$verb" ${VERBS[DOT]}; then
                 if [[ $cur = -* ]]; then
                         comps='--help --version --system --user --from-pattern --to-pattern --order --require'
-- 
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