diff options
| -rw-r--r-- | man/systemd-analyze.xml | 38 | ||||
| -rw-r--r-- | src/analyze/systemd-analyze.c | 52 |
2 files changed, 58 insertions, 32 deletions
diff --git a/man/systemd-analyze.xml b/man/systemd-analyze.xml index c8d0b4743b..9f313d76f1 100644 --- a/man/systemd-analyze.xml +++ b/man/systemd-analyze.xml @@ -93,20 +93,21 @@ been started at what time, highlighting the time they spent on initialization.</para> - <para><command>systemd-analyze dot</command> - Generate textual dependency graph description in dot - format for further processing with the GraphViz + <para><command>systemd-analyze dot</command> Generate + textual dependency graph description in dot format for + further processing with the GraphViz <citerefentry><refentrytitle>dot</refentrytitle><manvolnum>1</manvolnum></citerefentry> tool. Use a command line like <command>systemd-analyze - dot | dot -Tsvg > systemd.svg</command> to generate - a graphical dependency tree. Unless + dot | dot -Tsvg > systemd.svg</command> to generate a + graphical dependency tree. Unless <option>--order</option> or <option>--require</option> is passed the generated graph will show both ordering - and requirement dependencies.</para> - - <para>Optional patterns may be given at the end. The - relationship is printed if any of these matches either - lefthand or righthand node.</para> + and requirement dependencies. Optional pattern + globbing style specifications + (e.g. <filename>*.target</filename>) may be given at + the end. A unit dependency is included in the graph if + any of these patterns match either the origin or + destination node.</para> <para>If no command is passed <command>systemd-analyze time</command> is implied.</para> @@ -192,6 +193,23 @@ </refsect1> <refsect1> + <title>Examples</title> + + <para>This plots all dependencies of any unit whose + name starts with "<literal>avahi-daemon.</literal>":</para> + + <programlisting>$ systemd-analyze dot 'avahi-daemon.*' | dot -Tsvg > avahi.svg +$ eog avahi.svg</programlisting> + + <para>This plots the dependencies between all known target units:</para> + + <programlisting>systemd-analyze dot --to-pattern='*.target' --from-patter='*.target' | dot -Tsvg > targets.svg +$ eog targets.svg</programlisting> + + + </refsect1> + + <refsect1> <title>See Also</title> <para> <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, diff --git a/src/analyze/systemd-analyze.c b/src/analyze/systemd-analyze.c index ec579282e7..e648a4449f 100644 --- a/src/analyze/systemd-analyze.c +++ b/src/analyze/systemd-analyze.c @@ -626,40 +626,48 @@ static int graph_one_property(const char *name, const char *prop, DBusMessageIte dbus_message_iter_next(&sub)) { const char *s; char **p; - bool match_found = true; + bool match_found; assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING); dbus_message_iter_get_basic(&sub, &s); - STRV_FOREACH(p, arg_dot_from_patterns) { + if (!strv_isempty(arg_dot_from_patterns)) { match_found = false; - if (fnmatch(*p, name, 0) == 0) { - match_found = true; - break; - } + + STRV_FOREACH(p, arg_dot_from_patterns) + if (fnmatch(*p, name, 0) == 0) { + match_found = true; + break; + } + + if (!match_found) + continue; } - if (!match_found) - continue; - STRV_FOREACH(p, arg_dot_to_patterns) { + if (!strv_isempty(arg_dot_to_patterns)) { match_found = false; - if (fnmatch(*p, s, 0) == 0) { - match_found = true; - break; - } + + STRV_FOREACH(p, arg_dot_to_patterns) + if (fnmatch(*p, s, 0) == 0) { + match_found = true; + break; + } + + if (!match_found) + continue; } - if (!match_found) - continue; - STRV_FOREACH(p, patterns) { + if (!strv_isempty(patterns)) { match_found = false; - if (fnmatch(*p, name, 0) == 0 || fnmatch(*p, s, 0) == 0) { - match_found = true; - break; - } + + STRV_FOREACH(p, patterns) + if (fnmatch(*p, name, 0) == 0 || fnmatch(*p, s, 0) == 0) { + match_found = true; + break; + } + if (!match_found) + continue; } - if (!match_found) - continue; printf("\t\"%s\"->\"%s\" %s;\n", name, s, c); } |