mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Arjan van de Ven](/assets/img/avatar_default.png)
Dave Jones, in his blog, had some feedback about the bootchart script: Primarily his complaint was that shorter delays weren't visualized. The reason for that was that too small delays will have their labels mixed up in the graph in an unreadable mess. This patch has a fix for this; for one, it makes the output wider, so more will fit. The second part is that smaller delays are now shown with a much smaller font for the label; while this isn't per se readable at a 1:1 zoom, at least you can zoom in with most SVG viewing applications and see what it is you are looking at. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
162 lines
4.7 KiB
Perl
162 lines
4.7 KiB
Perl
#!/usr/bin/perl
|
|
|
|
# Copyright 2008, Intel Corporation
|
|
#
|
|
# This file is part of the Linux kernel
|
|
#
|
|
# This program file is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by the
|
|
# Free Software Foundation; version 2 of the License.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but WITHOUT
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
# for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program in a file named COPYING; if not, write to the
|
|
# Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor,
|
|
# Boston, MA 02110-1301 USA
|
|
#
|
|
# Authors:
|
|
# Arjan van de Ven <arjan@linux.intel.com>
|
|
|
|
|
|
#
|
|
# This script turns a dmesg output into a SVG graphic that shows which
|
|
# functions take how much time. You can view SVG graphics with various
|
|
# programs, including Inkscape, The Gimp and Firefox.
|
|
#
|
|
#
|
|
# For this script to work, the kernel needs to be compiled with the
|
|
# CONFIG_PRINTK_TIME configuration option enabled, and with
|
|
# "initcall_debug" passed on the kernel command line.
|
|
#
|
|
# usage:
|
|
# dmesg | perl scripts/bootgraph.pl > output.svg
|
|
#
|
|
|
|
use strict;
|
|
|
|
my %start;
|
|
my %end;
|
|
my $done = 0;
|
|
my $maxtime = 0;
|
|
my $firsttime = 100;
|
|
my $count = 0;
|
|
my %pids;
|
|
|
|
while (<>) {
|
|
my $line = $_;
|
|
if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_]+)\+/) {
|
|
my $func = $2;
|
|
if ($done == 0) {
|
|
$start{$func} = $1;
|
|
if ($1 < $firsttime) {
|
|
$firsttime = $1;
|
|
}
|
|
}
|
|
if ($line =~ /\@ ([0-9]+)/) {
|
|
$pids{$func} = $1;
|
|
}
|
|
$count = $count + 1;
|
|
}
|
|
|
|
if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_]+)\+.*returned/) {
|
|
if ($done == 0) {
|
|
$end{$2} = $1;
|
|
$maxtime = $1;
|
|
}
|
|
}
|
|
if ($line =~ /Write protecting the/) {
|
|
$done = 1;
|
|
}
|
|
if ($line =~ /Freeing unused kernel memory/) {
|
|
$done = 1;
|
|
}
|
|
}
|
|
|
|
if ($count == 0) {
|
|
print STDERR <<END;
|
|
No data found in the dmesg. Make sure that 'printk.time=1' and
|
|
'initcall_debug' are passed on the kernel command line.
|
|
Usage:
|
|
dmesg | perl scripts/bootgraph.pl > output.svg
|
|
END
|
|
exit 1;
|
|
}
|
|
|
|
print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
|
|
print "<svg width=\"2000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
|
|
|
|
my @styles;
|
|
|
|
$styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
$styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
|
|
|
|
my $mult = 1950.0 / ($maxtime - $firsttime);
|
|
my $threshold2 = ($maxtime - $firsttime) / 120.0;
|
|
my $threshold = $threshold2/10;
|
|
my $stylecounter = 0;
|
|
my %rows;
|
|
my $rowscount = 1;
|
|
my @initcalls = sort { $start{$a} <=> $start{$b} } keys(%start);
|
|
|
|
foreach my $key (@initcalls) {
|
|
my $duration = $end{$key} - $start{$key};
|
|
|
|
if ($duration >= $threshold) {
|
|
my ($s, $s2, $s3, $e, $w, $y, $y2, $style);
|
|
my $pid = $pids{$key};
|
|
|
|
if (!defined($rows{$pid})) {
|
|
$rows{$pid} = $rowscount;
|
|
$rowscount = $rowscount + 1;
|
|
}
|
|
$s = ($start{$key} - $firsttime) * $mult;
|
|
$s2 = $s + 6;
|
|
$s3 = $s + 1;
|
|
$e = ($end{$key} - $firsttime) * $mult;
|
|
$w = $e - $s;
|
|
|
|
$y = $rows{$pid} * 150;
|
|
$y2 = $y + 4;
|
|
|
|
$style = $styles[$stylecounter];
|
|
$stylecounter = $stylecounter + 1;
|
|
if ($stylecounter > 11) {
|
|
$stylecounter = 0;
|
|
};
|
|
|
|
print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
|
|
if ($duration >= $threshold2) {
|
|
print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
|
|
} else {
|
|
print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
# print the time line on top
|
|
my $time = $firsttime;
|
|
my $step = ($maxtime - $firsttime) / 15;
|
|
while ($time < $maxtime) {
|
|
my $s3 = ($time - $firsttime) * $mult;
|
|
my $tm = int($time * 100) / 100.0;
|
|
print "<text transform=\"translate($s3,89) rotate(90)\">$tm</text>\n";
|
|
$time = $time + $step;
|
|
}
|
|
|
|
print "</svg>\n";
|