[bootlin/training-materials updates] master: boot time slides: systemd-analyze updates (8967e5dd)

[Thomas Petazzoni]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/8967e5dddbd9de59460b112b8df919d4eb817eca

>---------------------------------------------------------------

commit 8967e5dddbd9de59460b112b8df919d4eb817eca
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Wed Apr 7 08:22:48 2021 +0200

    boot time slides: systemd-analyze updates
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


>---------------------------------------------------------------

8967e5dddbd9de59460b112b8df919d4eb817eca
 .../boot-time-init-scripts.tex                     | 41 +++++++++++++---------
 1 file changed, 24 insertions(+), 17 deletions(-)

diff --git a/slides/boot-time-init-scripts/boot-time-init-scripts.tex b/slides/boot-time-init-scripts/boot-time-init-scripts.tex
index f9968b99..b232e201 100644
--- a/slides/boot-time-init-scripts/boot-time-init-scripts.tex
+++ b/slides/boot-time-init-scripts/boot-time-init-scripts.tex
@@ -55,27 +55,34 @@ If you are using \code{systemd} as your \code{init} program, you can use
 \begin{block}{}
 \tiny
 \begin{verbatim}
-$ systemd-analyze blame
-  6207ms udev-settle.service
-   735ms NetworkManager.service
-   642ms avahi-daemon.service
-   600ms abrtd.service
-   517ms rtkit-daemon.service
-   396ms dbus.service
-   390ms rpcidmapd.service
-   346ms systemd-tmpfiles-setup.service
-   316ms cups.service
-   310ms console-kit-log-system-start.service
-   309ms libvirtd.service
-   303ms rpcbind.service
-   298ms ksmtuned.service
-   281ms rpcgssd.service
-   277ms sshd.service
-...
+$ systemd-analyze critical-chain
+multi-user.target @47.820s
+└─pmie.service @35.968s +548ms
+  └─pmcd.service @33.715s +2.247s
+    └─network-online.target @33.712s
+      └─systemd-networkd-wait-online.service @12.804s +20.905s
+        └─systemd-networkd.service @11.109s +1.690s
+          └─systemd-udevd.service @9.201s +1.904s
+            └─systemd-tmpfiles-setup-dev.service @7.306s +1.776s
+              └─kmod-static-nodes.service @6.976s +177ms
+                └─systemd-journald.socket
+                  └─system.slice
+                    └─-.slice
 \end{verbatim}
 \end{block}
 \end{frame}
 
+\begin{frame}[fragile]
+\frametitle{systemd-analyze plot}
+This command prints an SVG graphic detailing which system services have been started at what time,
+highlighting the time they spent on initialization.
+\begin{verbatim}
+$ systemd-analyze plot >bootup.svg
+$ inkscape bootup.svg
+\end{verbatim}
+\end{frame}
+
+
 \begin{frame}
 \frametitle{Init}
 Starting as soon as possible after all the dependencies are started: