Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/scripts/bootgraph.pl

  1 #!/usr/bin/perl
  2 
  3 # Copyright 2008, Intel Corporation
  4 #
  5 # This file is part of the Linux kernel
  6 #
  7 # This program file is free software; you can redistribute it and/or modify it
  8 # under the terms of the GNU General Public License as published by the
  9 # Free Software Foundation; version 2 of the License.
 10 #
 11 # This program is distributed in the hope that it will be useful, but WITHOUT
 12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14 # for more details.
 15 #
 16 # You should have received a copy of the GNU General Public License
 17 # along with this program in a file named COPYING; if not, write to the
 18 # Free Software Foundation, Inc.,
 19 # 51 Franklin Street, Fifth Floor,
 20 # Boston, MA 02110-1301 USA
 21 #
 22 # Authors:
 23 #       Arjan van de Ven <arjan@linux.intel.com>
 24 
 25 
 26 #
 27 # This script turns a dmesg output into a SVG graphic that shows which
 28 # functions take how much time. You can view SVG graphics with various
 29 # programs, including Inkscape, The Gimp and Firefox.
 30 #
 31 #
 32 # For this script to work, the kernel needs to be compiled with the
 33 # CONFIG_PRINTK_TIME configuration option enabled, and with
 34 # "initcall_debug" passed on the kernel command line.
 35 #
 36 # usage:
 37 #       dmesg | perl scripts/bootgraph.pl > output.svg
 38 #
 39 
 40 use strict;
 41 use Getopt::Long;
 42 my $header = 0;
 43 
 44 sub help {
 45         my $text = << "EOM";
 46 Usage:
 47 1) dmesg | perl scripts/bootgraph.pl [OPTION] > output.svg
 48 2) perl scripts/bootgraph.pl -h
 49 
 50 Options:
 51         -header Insert kernel version and date
 52 EOM
 53         my $std=shift;
 54         if ($std == 1) {
 55                 print STDERR $text;
 56         } else {
 57                 print $text;
 58         }
 59         exit;
 60 }
 61 
 62 GetOptions(
 63         'h|help'        =>\&help,
 64         'header'        =>\$header
 65 );
 66 
 67 my %start;
 68 my %end;
 69 my %type;
 70 my $done = 0;
 71 my $maxtime = 0;
 72 my $firsttime = 99999;
 73 my $count = 0;
 74 my %pids;
 75 my %pidctr;
 76 
 77 my $headerstep = 20;
 78 my $xheader = 15;
 79 my $yheader = 25;
 80 my $cyheader = 0;
 81 
 82 while (<>) {
 83         my $line = $_;
 84         if ($line =~ /([0-9\.]+)\] calling  ([a-zA-Z0-9\_\.]+)\+/) {
 85                 my $func = $2;
 86                 if ($done == 0) {
 87                         $start{$func} = $1;
 88                         $type{$func} = 0;
 89                         if ($1 < $firsttime) {
 90                                 $firsttime = $1;
 91                         }
 92                 }
 93                 if ($line =~ /\@ ([0-9]+)/) {
 94                         $pids{$func} = $1;
 95                 }
 96                 $count = $count + 1;
 97         }
 98 
 99         if ($line =~ /([0-9\.]+)\] async_waiting @ ([0-9]+)/) {
100                 my $pid = $2;
101                 my $func;
102                 if (!defined($pidctr{$pid})) {
103                         $func = "wait_" . $pid . "_1";
104                         $pidctr{$pid} = 1;
105                 } else {
106                         $pidctr{$pid} = $pidctr{$pid} + 1;
107                         $func = "wait_" . $pid . "_" . $pidctr{$pid};
108                 }
109                 if ($done == 0) {
110                         $start{$func} = $1;
111                         $type{$func} = 1;
112                         if ($1 < $firsttime) {
113                                 $firsttime = $1;
114                         }
115                 }
116                 $pids{$func} = $pid;
117                 $count = $count + 1;
118         }
119 
120         if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_\.]+)\+.*returned/) {
121                 if ($done == 0) {
122                         $end{$2} = $1;
123                         $maxtime = $1;
124                 }
125         }
126 
127         if ($line =~ /([0-9\.]+)\] async_continuing @ ([0-9]+)/) {
128                 my $pid = $2;
129                 my $func =  "wait_" . $pid . "_" . $pidctr{$pid};
130                 $end{$func} = $1;
131                 $maxtime = $1;
132         }
133         if ($line =~ /Write protecting the/) {
134                 $done = 1;
135         }
136         if ($line =~ /Freeing unused kernel memory/) {
137                 $done = 1;
138         }
139 }
140 
141 if ($count == 0) {
142     print STDERR <<END;
143 No data found in the dmesg. Make sure that 'printk.time=1' and
144 'initcall_debug' are passed on the kernel command line.
145 END
146         help(1);
147     exit 1;
148 }
149 
150 print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
151 print "<svg width=\"2000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
152 
153 
154 if ($header) {
155         my $version = `uname -a`;
156         my $date = `date`;
157         print "<text transform=\"translate($xheader,$yheader)\">Kernel version: $version</text>\n";
158         $cyheader = $yheader+$headerstep;
159         print "<text transform=\"translate($xheader,$cyheader)\">Date: $date</text>\n";
160 }
161 
162 my @styles;
163 
164 $styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
165 $styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
166 $styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
167 $styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
168 $styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
169 $styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
170 $styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
171 $styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
172 $styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
173 $styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
174 $styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
175 $styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
176 
177 my $style_wait = "fill:rgb(128,128,128);fill-opacity:0.5;stroke-width:0;stroke:rgb(0,0,0)";
178 
179 my $mult = 1950.0 / ($maxtime - $firsttime);
180 my $threshold2 = ($maxtime - $firsttime) / 120.0;
181 my $threshold = $threshold2/10;
182 my $stylecounter = 0;
183 my %rows;
184 my $rowscount = 1;
185 my @initcalls = sort { $start{$a} <=> $start{$b} } keys(%start);
186 
187 foreach my $key (@initcalls) {
188         my $duration = $end{$key} - $start{$key};
189 
190         if ($duration >= $threshold) {
191                 my ($s, $s2, $s3, $e, $w, $y, $y2, $style);
192                 my $pid = $pids{$key};
193 
194                 if (!defined($rows{$pid})) {
195                         $rows{$pid} = $rowscount;
196                         $rowscount = $rowscount + 1;
197                 }
198                 $s = ($start{$key} - $firsttime) * $mult;
199                 $s2 = $s + 6;
200                 $s3 = $s + 1;
201                 $e = ($end{$key} - $firsttime) * $mult;
202                 $w = $e - $s;
203 
204                 $y = $rows{$pid} * 150;
205                 $y2 = $y + 4;
206 
207                 $style = $styles[$stylecounter];
208                 $stylecounter = $stylecounter + 1;
209                 if ($stylecounter > 11) {
210                         $stylecounter = 0;
211                 };
212 
213                 if ($type{$key} == 1) {
214                         $y = $y + 15;
215                         print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"115\" style=\"$style_wait\"/>\n";
216                 } else {
217                         print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
218                         if ($duration >= $threshold2) {
219                                 print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
220                         } else {
221                                 print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
222                         }
223                 }
224         }
225 }
226 
227 
228 # print the time line on top
229 my $time = $firsttime;
230 my $step = ($maxtime - $firsttime) / 15;
231 while ($time < $maxtime) {
232         my $s3 = ($time - $firsttime) * $mult;
233         my $tm = int($time * 100) / 100.0;
234         print "<text transform=\"translate($s3,89) rotate(90)\">$tm</text>\n";
235         $time = $time + $step;
236 }
237 
238 print "</svg>\n";

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us