3846N/A<?
xml version='1.0'?>
<!--*-nxml-*--> 3846N/A<!
DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" 3846N/A This file is part of systemd. 3846N/A Copyright 2012 Intel Corporation 3846N/A Auke Kok <auke-jan.h.kok@intel.com> 3846N/A systemd is free software; you can redistribute it and/or modify it 3846N/A under the terms of the GNU Lesser General Public License as published by 3846N/A the Free Software Foundation; either version 2.1 of the License, or 3846N/A (at your option) any later version. 3846N/A systemd is distributed in the hope that it will be useful, but 3846N/A WITHOUT ANY WARRANTY; without even the implied warranty of 3846N/A MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 3846N/A Lesser General Public License for more details. 3846N/A You should have received a copy of the GNU Lesser General Public License 3846N/A<
refentry id="systemd-bootchart" conditional='ENABLE_BOOTCHART'>
3846N/A <
title>systemd-bootchart</
title>
3846N/A <
productname>systemd</
productname>
3846N/A <
contrib>Developer</
contrib>
3846N/A <
firstname>Auke</
firstname>
3846N/A <
email>auke-jan.h.kok@intel.com</
email>
3846N/A <
refentrytitle>systemd-bootchart</
refentrytitle>
3846N/A <
refname>systemd-bootchart</
refname>
3846N/A <
refpurpose>Boot performance analysis graphing tool</
refpurpose>
3846N/A <
para>Systemd-bootchart is an boot time analysis tool. It represents
3846N/A various aspects of the system as graph elements. These graph
3846N/A elements allow the user to determine resource usage, efficiency
3846N/A and performance issues.</
para>
3846N/A <
para>systemd-bootchart can be invoked in several different ways:</
para>
3846N/A <
title>Kernel invocation</
title>
3846N/A <
listitem><
para>The kernel can invoke systemd-bootchart
3846N/A instead of the init process. In itself, systemd-bootchart
3846N/A this matter.</
para></
listitem>
3846N/A <
title>Started as a standalone program</
title>
3846N/A <
listitem><
para>One can execute systemd-bootchart as
3846N/A normal application from the commandline. In this mode
3846N/A it is highly recommended to pass the "-r" flag in order
3846N/A to not graph the time elapsed since boot and before
3846N/A systemd-bootchart was started, as it may result in
3846N/A page for information about the various options that influence how
7168N/A systemd-bootchart operates.</
para>
3846N/A <
para>Systemd-bootchart generates SVG graphs. In order to render these
3846N/A on a graphical display any SVG capable viewer can be used. It should be
3846N/A noted that the SVG render engines in most browsers (including Chrome
3846N/A and Firefox) are many times faster than dedicated graphical applications
3846N/A like Gimp and Inkscape. Just point your browser at "file:///
var/
log"!
3846N/A <
citerefentry><
refentrytitle>
bootchart.conf</
refentrytitle><
manvolnum>5</
manvolnum></
citerefentry>