201 lines
5.6 KiB
Perl
201 lines
5.6 KiB
Perl
#!/usr/bin/perl
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# Copyright 2008, Intel Corporation
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#
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# This file is part of the Linux kernel
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#
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# This program file is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program in a file named COPYING; if not, write to the
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# Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301 USA
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#
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# Authors:
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# Arjan van de Ven <arjan@linux.intel.com>
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#
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# This script turns a dmesg output into a SVG graphic that shows which
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# functions take how much time. You can view SVG graphics with various
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# programs, including Inkscape, The Gimp and Firefox.
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#
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#
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# For this script to work, the kernel needs to be compiled with the
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# CONFIG_PRINTK_TIME configuration option enabled, and with
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# "initcall_debug" passed on the kernel command line.
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#
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# usage:
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# dmesg | perl scripts/bootgraph.pl > output.svg
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#
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use strict;
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my %start;
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my %end;
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my %type;
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my $done = 0;
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my $maxtime = 0;
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my $firsttime = 100;
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my $count = 0;
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my %pids;
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my %pidctr;
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while (<>) {
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my $line = $_;
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if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_\.]+)\+/) {
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my $func = $2;
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if ($done == 0) {
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$start{$func} = $1;
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$type{$func} = 0;
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if ($1 < $firsttime) {
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$firsttime = $1;
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}
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}
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if ($line =~ /\@ ([0-9]+)/) {
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$pids{$func} = $1;
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}
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$count = $count + 1;
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}
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if ($line =~ /([0-9\.]+)\] async_waiting @ ([0-9]+)/) {
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my $pid = $2;
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my $func;
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if (!defined($pidctr{$pid})) {
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$func = "wait_" . $pid . "_1";
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$pidctr{$pid} = 1;
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} else {
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$pidctr{$pid} = $pidctr{$pid} + 1;
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$func = "wait_" . $pid . "_" . $pidctr{$pid};
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}
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if ($done == 0) {
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$start{$func} = $1;
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$type{$func} = 1;
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if ($1 < $firsttime) {
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$firsttime = $1;
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}
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}
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$pids{$func} = $pid;
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$count = $count + 1;
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}
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if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_\.]+)\+.*returned/) {
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if ($done == 0) {
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$end{$2} = $1;
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$maxtime = $1;
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}
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}
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if ($line =~ /([0-9\.]+)\] async_continuing @ ([0-9]+)/) {
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my $pid = $2;
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my $func = "wait_" . $pid . "_" . $pidctr{$pid};
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$end{$func} = $1;
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$maxtime = $1;
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}
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if ($line =~ /Write protecting the/) {
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$done = 1;
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}
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if ($line =~ /Freeing unused kernel memory/) {
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$done = 1;
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}
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}
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if ($count == 0) {
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print STDERR <<END;
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No data found in the dmesg. Make sure that 'printk.time=1' and
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'initcall_debug' are passed on the kernel command line.
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Usage:
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dmesg | perl scripts/bootgraph.pl > output.svg
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END
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exit 1;
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}
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print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
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print "<svg width=\"2000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
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my @styles;
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$styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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my $style_wait = "fill:rgb(128,128,128);fill-opacity:0.5;stroke-width:0;stroke:rgb(0,0,0)";
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my $mult = 1950.0 / ($maxtime - $firsttime);
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my $threshold2 = ($maxtime - $firsttime) / 120.0;
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my $threshold = $threshold2/10;
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my $stylecounter = 0;
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my %rows;
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my $rowscount = 1;
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my @initcalls = sort { $start{$a} <=> $start{$b} } keys(%start);
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foreach my $key (@initcalls) {
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my $duration = $end{$key} - $start{$key};
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if ($duration >= $threshold) {
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my ($s, $s2, $s3, $e, $w, $y, $y2, $style);
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my $pid = $pids{$key};
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if (!defined($rows{$pid})) {
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$rows{$pid} = $rowscount;
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$rowscount = $rowscount + 1;
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}
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$s = ($start{$key} - $firsttime) * $mult;
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$s2 = $s + 6;
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$s3 = $s + 1;
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$e = ($end{$key} - $firsttime) * $mult;
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$w = $e - $s;
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$y = $rows{$pid} * 150;
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$y2 = $y + 4;
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$style = $styles[$stylecounter];
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$stylecounter = $stylecounter + 1;
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if ($stylecounter > 11) {
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$stylecounter = 0;
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};
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if ($type{$key} == 1) {
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$y = $y + 15;
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print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"115\" style=\"$style_wait\"/>\n";
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} else {
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print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
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if ($duration >= $threshold2) {
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print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
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} else {
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print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
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}
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}
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}
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}
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# print the time line on top
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my $time = $firsttime;
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my $step = ($maxtime - $firsttime) / 15;
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while ($time < $maxtime) {
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my $s3 = ($time - $firsttime) * $mult;
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my $tm = int($time * 100) / 100.0;
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print "<text transform=\"translate($s3,89) rotate(90)\">$tm</text>\n";
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$time = $time + $step;
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}
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print "</svg>\n";
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