+ <para>These options can also be set in the
+ <filename>/etc/systemd/bootchart.conf</filename>
+ file. See
+ <citerefentry><refentrytitle>bootchart.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+ </para>
+
+ <variablelist>
+ <xi:include href="standard-options.xml" xpointer="help" />
+
+ <varlistentry>
+ <term><option>-n</option></term>
+ <term><option>--sample <replaceable>N</replaceable></option></term>
+ <listitem><para>Specify the number of
+ samples, <replaceable>N</replaceable>,
+ to record. Samples will be recorded at
+ intervals defined with <option>--freq</option>.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-f</option></term>
+ <term><option>--freq <replaceable>f</replaceable></option></term>
+ <listitem><para>Specify the sample log
+ frequency, a positive real <replaceable>f</replaceable>, in Hz.
+ Most systems can cope with values up to 25-50 without
+ creating too much overhead.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-r</option></term>
+ <term><option>--rel</option></term>
+ <listitem><para>Use relative times instead of absolute
+ times. This is useful for using bootchart at post-boot
+ time to profile an already booted system. Without this
+ option the graph would become extremely large. If set, the
+ horizontal axis starts at the first recorded sample
+ instead of time 0.0.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-F</option></term>
+ <term><option>--no-filter</option></term>
+ <listitem><para>Disable filtering of tasks that
+ did not contribute significantly to the boot. Processes
+ that are too short-lived (only seen in one sample) or
+ that do not consume any significant CPU time (less than
+ 0.001 s) will not be displayed in the output graph.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-C</option></term>
+ <term><option>--cmdline</option></term>
+ <listitem><para>Display the full command line with arguments of processes,
+ instead of only the process name.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-o</option></term>
+ <term><option>--output <replaceable>path</replaceable></option></term>
+ <listitem><para>Specify the output directory for the
+ graphs. By default, bootchart writes the graphs to
+ <filename>/run/log</filename>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-i</option></term>
+ <term><option>--init <replaceable>path</replaceable></option></term>
+ <listitem><para>Use this init binary. Defaults to
+ <command>/sbin/init</command>.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-p</option></term>
+ <term><option>--pss</option></term>
+ <listitem><para>Enable logging and graphing
+ of processes' PSS (Proportional Set Size)
+ memory consumption. See <filename>filesystems/proc.txt</filename>
+ in the kernel documentation for an
+ explanation of this field.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-e</option></term>
+ <term><option>--entropy</option></term>
+ <listitem><para>Enable logging and graphing
+ of the kernel random entropy pool size.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-x</option></term>
+ <term><option>--scale-x <replaceable>N</replaceable></option></term>
+ <listitem><para>Horizontal scaling factor for all variable
+ graph components.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-y</option></term>
+ <term><option>--scale-y <replaceable>N</replaceable></option></term>
+ <listitem><para>Vertical scaling factor for all variable
+ graph components.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+
+