From c96ec6308c1a31bb302f392e183f678ce819a8fd Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 11 Jan 2023 13:52:12 +0100 Subject: [PATCH] man: explain what kind of data is actually included in "systemd-analyze plot" output Prompted by: https://lists.freedesktop.org/archives/systemd-devel/2023-January/048736.html --- man/systemd-analyze.xml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/man/systemd-analyze.xml b/man/systemd-analyze.xml index 0d91cdd7d0..4a276bd3c7 100644 --- a/man/systemd-analyze.xml +++ b/man/systemd-analyze.xml @@ -284,6 +284,13 @@ Timestamp units-load-finish: Thu 2019-03-14 23:28:07 CET $ eog bootup.svg& + + Note that this plot is based on the most recent per-unit timing data of loaded units. This means + that if a unit gets started, then stopped and then started again the information shown will cover the + most recent start cycle, not the first one. Thus it's recommended to consult this information only + shortly after boot, so that this distinction doesn't matter. Moreover, units that are not referenced by + any other unit through a dependency might be unloaded by the service manager once they terminate (and + did not fail). Such units will not show up in the plot. -- 2.25.1