-
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathflamegraph.pl
1125 lines (1040 loc) · 33.3 KB
/
flamegraph.pl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/perl -w
#
# flamegraph.pl flame stack grapher.
#
# This takes stack samples and renders a call graph, allowing hot functions
# and codepaths to be quickly identified. Stack samples can be generated using
# tools such as DTrace, perf, SystemTap, and Instruments.
#
# USAGE: ./flamegraph.pl [options] input.txt > graph.svg
#
# grep funcA input.txt | ./flamegraph.pl [options] > graph.svg
#
# Then open the resulting .svg in a web browser, for interactivity: mouse-over
# frames for info, click to zoom, and ctrl-F to search.
#
# Options are listed in the usage message (--help).
#
# The input is stack frames and sample counts formatted as single lines. Each
# frame in the stack is semicolon separated, with a space and count at the end
# of the line. These can be generated for Linux perf script output using
# stackcollapse-perf.pl, for DTrace using stackcollapse.pl, and for other tools
# using the other stackcollapse programs. Example input:
#
# swapper;start_kernel;rest_init;cpu_idle;default_idle;native_safe_halt 1
#
# An optional extra column of counts can be provided to generate a differential
# flame graph of the counts, colored red for more, and blue for less. This
# can be useful when using flame graphs for non-regression testing.
# See the header comment in the difffolded.pl program for instructions.
#
# The input functions can optionally have annotations at the end of each
# function name, following a precedent by some tools (Linux perf's _[k]):
# _[k] for kernel
# _[i] for inlined
# _[j] for jit
# _[w] for waker
# Some of the stackcollapse programs support adding these annotations, eg,
# stackcollapse-perf.pl --kernel --jit. They are used merely for colors by
# some palettes, eg, flamegraph.pl --color=java.
#
# The output flame graph shows relative presence of functions in stack samples.
# The ordering on the x-axis has no meaning; since the data is samples, time
# order of events is not known. The order used sorts function names
# alphabetically.
#
# While intended to process stack samples, this can also process stack traces.
# For example, tracing stacks for memory allocation, or resource usage. You
# can use --title to set the title to reflect the content, and --countname
# to change "samples" to "bytes" etc.
#
# There are a few different palettes, selectable using --color. By default,
# the colors are selected at random (except for differentials). Functions
# called "-" will be printed gray, which can be used for stack separators (eg,
# between user and kernel stacks).
#
# HISTORY
#
# This was inspired by Neelakanth Nadgir's excellent function_call_graph.rb
# program, which visualized function entry and return trace events. As Neel
# wrote: "The output displayed is inspired by Roch's CallStackAnalyzer which
# was in turn inspired by the work on vftrace by Jan Boerhout". See:
# https://blogs.oracle.com/realneel/entry/visualizing_callstacks_via_dtrace_and
#
# Copyright 2016 Netflix, Inc.
# Copyright 2011 Joyent, Inc. All rights reserved.
# Copyright 2011 Brendan Gregg. All rights reserved.
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at docs/cddl1.txt or
# http://opensource.org/licenses/CDDL-1.0.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at docs/cddl1.txt.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# 11-Oct-2014 Adrien Mahieux Added zoom.
# 21-Nov-2013 Shawn Sterling Added consistent palette file option
# 17-Mar-2013 Tim Bunce Added options and more tunables.
# 15-Dec-2011 Dave Pacheco Support for frames with whitespace.
# 10-Sep-2011 Brendan Gregg Created this.
use strict;
use Getopt::Long;
use open qw(:std :utf8);
# tunables
my $encoding;
my $fonttype = "Verdana";
my $imagewidth = 1200; # max width, pixels
my $frameheight = 16; # max height is dynamic
my $fontsize = 12; # base text size
my $fontwidth = 0.59; # avg width relative to fontsize
my $minwidth = 0.1; # min function width, pixels
my $nametype = "Function:"; # what are the names in the data?
my $countname = "samples"; # what are the counts in the data?
my $colors = "hot"; # color theme
my $bgcolor1 = "#eeeeee"; # background color gradient start
my $bgcolor2 = "#eeeeb0"; # background color gradient stop
my $nameattrfile; # file holding function attributes
my $timemax; # (override the) sum of the counts
my $factor = 1; # factor to scale counts by
my $hash = 0; # color by function name
my $palette = 0; # if we use consistent palettes (default off)
my %palette_map; # palette map hash
my $pal_file = "palette.map"; # palette map file name
my $stackreverse = 0; # reverse stack order, switching merge end
my $inverted = 0; # icicle graph
my $negate = 0; # switch differential hues
my $titletext = ""; # centered heading
my $titledefault = "Flame Graph"; # overwritten by --title
my $titleinverted = "Icicle Graph"; # " "
my $searchcolor = "rgb(230,0,230)"; # color for search highlighting
my $notestext = ""; # embedded notes in SVG
my $subtitletext = ""; # second level title (optional)
my $help = 0;
sub usage {
die <<USAGE_END;
USAGE: $0 [options] infile > outfile.svg\n
--title TEXT # change title text
--subtitle TEXT # second level title (optional)
--width NUM # width of image (default 1200)
--height NUM # height of each frame (default 16)
--minwidth NUM # omit smaller functions (default 0.1 pixels)
--fonttype FONT # font type (default "Verdana")
--fontsize NUM # font size (default 12)
--countname TEXT # count type label (default "samples")
--nametype TEXT # name type label (default "Function:")
--colors PALETTE # set color palette. choices are: hot (default), mem,
# io, wakeup, chain, java, js, perl, red, green, blue,
# aqua, yellow, purple, orange
--hash # colors are keyed by function name hash
--cp # use consistent palette (palette.map)
--reverse # generate stack-reversed flame graph
--inverted # icicle graph
--negate # switch differential hues (blue<->red)
--notes TEXT # add notes comment in SVG (for debugging)
--help # this message
eg,
$0 --title="Flame Graph: malloc()" trace.txt > graph.svg
USAGE_END
}
GetOptions(
'fonttype=s' => \$fonttype,
'width=i' => \$imagewidth,
'height=i' => \$frameheight,
'encoding=s' => \$encoding,
'fontsize=f' => \$fontsize,
'fontwidth=f' => \$fontwidth,
'minwidth=f' => \$minwidth,
'title=s' => \$titletext,
'subtitle=s' => \$subtitletext,
'nametype=s' => \$nametype,
'countname=s' => \$countname,
'nameattr=s' => \$nameattrfile,
'total=s' => \$timemax,
'factor=f' => \$factor,
'colors=s' => \$colors,
'hash' => \$hash,
'cp' => \$palette,
'reverse' => \$stackreverse,
'inverted' => \$inverted,
'negate' => \$negate,
'notes=s' => \$notestext,
'help' => \$help,
) or usage();
$help && usage();
# internals
my $ypad1 = $fontsize * 3; # pad top, include title
my $ypad2 = $fontsize * 2 + 10; # pad bottom, include labels
my $ypad3 = $fontsize * 2; # pad top, include subtitle (optional)
my $xpad = 10; # pad lefm and right
my $framepad = 1; # vertical padding for frames
my $depthmax = 0;
my %Events;
my %nameattr;
if ($titletext eq "") {
unless ($inverted) {
$titletext = $titledefault;
} else {
$titletext = $titleinverted;
}
}
if ($nameattrfile) {
# The name-attribute file format is a function name followed by a tab then
# a sequence of tab separated name=value pairs.
open my $attrfh, $nameattrfile or die "Can't read $nameattrfile: $!\n";
while (<$attrfh>) {
chomp;
my ($funcname, $attrstr) = split /\t/, $_, 2;
die "Invalid format in $nameattrfile" unless defined $attrstr;
$nameattr{$funcname} = { map { split /=/, $_, 2 } split /\t/, $attrstr };
}
}
if ($notestext =~ /[<>]/) {
die "Notes string can't contain < or >"
}
# background colors:
# - yellow gradient: default (hot, java, js, perl)
# - blue gradient: mem, chain
# - gray gradient: io, wakeup, flat colors (red, green, blue, ...)
if ($colors eq "mem" or $colors eq "chain") {
$bgcolor1 = "#eeeeee"; $bgcolor2 = "#e0e0ff";
}
if ($colors =~ /^(io|wakeup|red|green|blue|aqua|yellow|purple|orange)$/) {
$bgcolor1 = "#f8f8f8"; $bgcolor2 = "#e8e8e8";
}
# SVG functions
{ package SVG;
sub new {
my $class = shift;
my $self = {};
bless ($self, $class);
return $self;
}
sub header {
my ($self, $w, $h) = @_;
my $enc_attr = '';
if (defined $encoding) {
$enc_attr = qq{ encoding="$encoding"};
}
$self->{svg} .= <<SVG;
<?xml version="1.0"$enc_attr standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" width="$w" height="$h" onload="init(evt)" viewBox="0 0 $w $h" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Flame graph stack visualization. See /~https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples. -->
<!-- NOTES: $notestext -->
SVG
}
sub include {
my ($self, $content) = @_;
$self->{svg} .= $content;
}
sub colorAllocate {
my ($self, $r, $g, $b) = @_;
return "rgb($r,$g,$b)";
}
sub group_start {
my ($self, $attr) = @_;
my @g_attr = map {
exists $attr->{$_} ? sprintf(qq/$_="%s"/, $attr->{$_}) : ()
} qw(class style onmouseover onmouseout onclick);
push @g_attr, $attr->{g_extra} if $attr->{g_extra};
$self->{svg} .= sprintf qq/<g %s>\n/, join(' ', @g_attr);
$self->{svg} .= sprintf qq/<title>%s<\/title>/, $attr->{title}
if $attr->{title}; # should be first element within g container
if ($attr->{href}) {
my @a_attr;
push @a_attr, sprintf qq/xlink:href="%s"/, $attr->{href} if $attr->{href};
# default target=_top else links will open within SVG <object>
push @a_attr, sprintf qq/target="%s"/, $attr->{target} || "_top";
push @a_attr, $attr->{a_extra} if $attr->{a_extra};
$self->{svg} .= sprintf qq/<a %s>/, join(' ', @a_attr);
}
}
sub group_end {
my ($self, $attr) = @_;
$self->{svg} .= qq/<\/a>\n/ if $attr->{href};
$self->{svg} .= qq/<\/g>\n/;
}
sub filledRectangle {
my ($self, $x1, $y1, $x2, $y2, $fill, $extra) = @_;
$x1 = sprintf "%0.1f", $x1;
$x2 = sprintf "%0.1f", $x2;
my $w = sprintf "%0.1f", $x2 - $x1;
my $h = sprintf "%0.1f", $y2 - $y1;
$extra = defined $extra ? $extra : "";
$self->{svg} .= qq/<rect x="$x1" y="$y1" width="$w" height="$h" fill="$fill" $extra \/>\n/;
}
sub stringTTF {
my ($self, $color, $font, $size, $angle, $x, $y, $str, $loc, $extra) = @_;
$x = sprintf "%0.2f", $x;
$loc = defined $loc ? $loc : "left";
$extra = defined $extra ? $extra : "";
$self->{svg} .= qq/<text text-anchor="$loc" x="$x" y="$y" font-size="$size" font-family="$font" fill="$color" $extra >$str<\/text>\n/;
}
sub svg {
my $self = shift;
return "$self->{svg}</svg>\n";
}
1;
}
sub namehash {
# Generate a vector hash for the name string, weighting early over
# later characters. We want to pick the same colors for function
# names across different flame graphs.
my $name = shift;
my $vector = 0;
my $weight = 1;
my $max = 1;
my $mod = 10;
# if module name present, trunc to 1st char
$name =~ s/.(.*?)`//;
foreach my $c (split //, $name) {
my $i = (ord $c) % $mod;
$vector += ($i / ($mod++ - 1)) * $weight;
$max += 1 * $weight;
$weight *= 0.70;
last if $mod > 12;
}
return (1 - $vector / $max)
}
sub color {
my ($type, $hash, $name) = @_;
my ($v1, $v2, $v3);
if ($hash) {
$v1 = namehash($name);
$v2 = $v3 = namehash(scalar reverse $name);
} else {
$v1 = rand(1);
$v2 = rand(1);
$v3 = rand(1);
}
# theme palettes
if (defined $type and $type eq "hot") {
my $r = 205 + int(50 * $v3);
my $g = 0 + int(230 * $v1);
my $b = 0 + int(55 * $v2);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "mem") {
my $r = 0;
my $g = 190 + int(50 * $v2);
my $b = 0 + int(210 * $v1);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "io") {
my $r = 80 + int(60 * $v1);
my $g = $r;
my $b = 190 + int(55 * $v2);
return "rgb($r,$g,$b)";
}
# multi palettes
if (defined $type and $type eq "java") {
# Handle both annotations (_[j], _[i], ...; which are
# accurate), as well as input that lacks any annotations, as
# best as possible. Without annotations, we get a little hacky
# and match on java|org|com, etc.
if ($name =~ m:_\[j\]$:) { # jit annotation
$type = "green";
} elsif ($name =~ m:_\[i\]$:) { # inline annotation
$type = "aqua";
} elsif ($name =~ m:^L?(java|org|com|io|sun)/:) { # Java
$type = "green";
} elsif ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:_\[k\]$:) { # kernel annotation
$type = "orange";
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "perl") {
if ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:Perl: or $name =~ m:\.pl:) { # Perl
$type = "green";
} elsif ($name =~ m:_\[k\]$:) { # kernel
$type = "orange";
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "js") {
# Handle both annotations (_[j], _[i], ...; which are
# accurate), as well as input that lacks any annotations, as
# best as possible. Without annotations, we get a little hacky,
# and match on a "/" with a ".js", etc.
if ($name =~ m:_\[j\]$:) { # jit annotation
if ($name =~ m:/:) {
$type = "green"; # source
} else {
$type = "aqua"; # builtin
}
} elsif ($name =~ /::/) { # C++
$type = "yellow";
} elsif ($name =~ m:/.*\.js:) { # JavaScript (match "/" in path)
$type = "green";
} elsif ($name =~ m/:/) { # JavaScript (match ":" in builtin)
$type = "aqua";
} elsif ($name =~ m/^ $/) { # Missing symbol
$type = "green";
} elsif ($name =~ m:_\[k\]:) { # kernel
$type = "orange";
} else { # system
$type = "red";
}
# fall-through to color palettes
}
if (defined $type and $type eq "wakeup") {
$type = "aqua";
# fall-through to color palettes
}
if (defined $type and $type eq "chain") {
if ($name =~ m:_\[w\]:) { # waker
$type = "aqua"
} else { # off-CPU
$type = "blue";
}
# fall-through to color palettes
}
# color palettes
if (defined $type and $type eq "red") {
my $r = 200 + int(55 * $v1);
my $x = 50 + int(80 * $v1);
return "rgb($r,$x,$x)";
}
if (defined $type and $type eq "green") {
my $g = 200 + int(55 * $v1);
my $x = 50 + int(60 * $v1);
return "rgb($x,$g,$x)";
}
if (defined $type and $type eq "blue") {
my $b = 205 + int(50 * $v1);
my $x = 80 + int(60 * $v1);
return "rgb($x,$x,$b)";
}
if (defined $type and $type eq "yellow") {
my $x = 175 + int(55 * $v1);
my $b = 50 + int(20 * $v1);
return "rgb($x,$x,$b)";
}
if (defined $type and $type eq "purple") {
my $x = 190 + int(65 * $v1);
my $g = 80 + int(60 * $v1);
return "rgb($x,$g,$x)";
}
if (defined $type and $type eq "aqua") {
my $r = 50 + int(60 * $v1);
my $g = 165 + int(55 * $v1);
my $b = 165 + int(55 * $v1);
return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "orange") {
my $r = 190 + int(65 * $v1);
my $g = 90 + int(65 * $v1);
return "rgb($r,$g,0)";
}
return "rgb(0,0,0)";
}
sub color_scale {
my ($value, $max) = @_;
my ($r, $g, $b) = (255, 255, 255);
$value = -$value if $negate;
if ($value > 0) {
$g = $b = int(210 * ($max - $value) / $max);
} elsif ($value < 0) {
$r = $g = int(210 * ($max + $value) / $max);
}
return "rgb($r,$g,$b)";
}
sub color_map {
my ($colors, $func) = @_;
if (exists $palette_map{$func}) {
return $palette_map{$func};
} else {
$palette_map{$func} = color($colors, $hash, $func);
return $palette_map{$func};
}
}
sub write_palette {
open(FILE, ">$pal_file");
foreach my $key (sort keys %palette_map) {
print FILE $key."->".$palette_map{$key}."\n";
}
close(FILE);
}
sub read_palette {
if (-e $pal_file) {
open(FILE, $pal_file) or die "can't open file $pal_file: $!";
while ( my $line = <FILE>) {
chomp($line);
(my $key, my $value) = split("->",$line);
$palette_map{$key}=$value;
}
close(FILE)
}
}
my %Node; # Hash of merged frame data
my %Tmp;
# flow() merges two stacks, storing the merged frames and value data in %Node.
sub flow {
my ($last, $this, $v, $d) = @_;
my $len_a = @$last - 1;
my $len_b = @$this - 1;
my $i = 0;
my $len_same;
for (; $i <= $len_a; $i++) {
last if $i > $len_b;
last if $last->[$i] ne $this->[$i];
}
$len_same = $i;
for ($i = $len_a; $i >= $len_same; $i--) {
my $k = "$last->[$i];$i";
# a unique ID is constructed from "func;depth;etime";
# func-depth isn't unique, it may be repeated later.
$Node{"$k;$v"}->{stime} = delete $Tmp{$k}->{stime};
if (defined $Tmp{$k}->{delta}) {
$Node{"$k;$v"}->{delta} = delete $Tmp{$k}->{delta};
}
delete $Tmp{$k};
}
for ($i = $len_same; $i <= $len_b; $i++) {
my $k = "$this->[$i];$i";
$Tmp{$k}->{stime} = $v;
if (defined $d) {
$Tmp{$k}->{delta} += $i == $len_b ? $d : 0;
}
}
return $this;
}
# parse input
my @Data;
my $last = [];
my $time = 0;
my $delta = undef;
my $ignored = 0;
my $line;
my $maxdelta = 1;
# reverse if needed
foreach (<>) {
chomp;
$line = $_;
if ($stackreverse) {
# there may be an extra samples column for differentials
# XXX todo: redo these REs as one. It's repeated below.
my($stack, $samples) = (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
my $samples2 = undef;
if ($stack =~ /^(.*)\s+?(\d+(?:\.\d*)?)$/) {
$samples2 = $samples;
($stack, $samples) = $stack =~ (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
unshift @Data, join(";", reverse split(";", $stack)) . " $samples $samples2";
} else {
unshift @Data, join(";", reverse split(";", $stack)) . " $samples";
}
} else {
unshift @Data, $line;
}
}
# process and merge frames
foreach (sort @Data) {
chomp;
# process: folded_stack count
# eg: func_a;func_b;func_c 31
my ($stack, $samples) = (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
unless (defined $samples and defined $stack) {
++$ignored;
next;
}
# there may be an extra samples column for differentials:
my $samples2 = undef;
if ($stack =~ /^(.*)\s+?(\d+(?:\.\d*)?)$/) {
$samples2 = $samples;
($stack, $samples) = $stack =~ (/^(.*)\s+?(\d+(?:\.\d*)?)$/);
}
$delta = undef;
if (defined $samples2) {
$delta = $samples2 - $samples;
$maxdelta = abs($delta) if abs($delta) > $maxdelta;
}
# for chain graphs, annotate waker frames with "_[w]", for later
# coloring. This is a hack, but has a precedent ("_[k]" from perf).
if ($colors eq "chain") {
my @parts = split ";--;", $stack;
my @newparts = ();
$stack = shift @parts;
$stack .= ";--;";
foreach my $part (@parts) {
$part =~ s/;/_[w];/g;
$part .= "_[w]";
push @newparts, $part;
}
$stack .= join ";--;", @parts;
}
# merge frames and populate %Node:
$last = flow($last, [ '', split ";", $stack ], $time, $delta);
if (defined $samples2) {
$time += $samples2;
} else {
$time += $samples;
}
}
flow($last, [], $time, $delta);
warn "Ignored $ignored lines with invalid format\n" if $ignored;
unless ($time) {
warn "ERROR: No stack counts found\n";
my $im = SVG->new();
# emit an error message SVG, for tools automating flamegraph use
my $imageheight = $fontsize * 5;
$im->header($imagewidth, $imageheight);
$im->stringTTF($im->colorAllocate(0, 0, 0), $fonttype, $fontsize + 2,
0.0, int($imagewidth / 2), $fontsize * 2,
"ERROR: No valid input provided to flamegraph.pl.", "middle");
print $im->svg;
exit 2;
}
if ($timemax and $timemax < $time) {
warn "Specified --total $timemax is less than actual total $time, so ignored\n"
if $timemax/$time > 0.02; # only warn is significant (e.g., not rounding etc)
undef $timemax;
}
$timemax ||= $time;
my $widthpertime = ($imagewidth - 2 * $xpad) / $timemax;
my $minwidth_time = $minwidth / $widthpertime;
# prune blocks that are too narrow and determine max depth
while (my ($id, $node) = each %Node) {
my ($func, $depth, $etime) = split ";", $id;
my $stime = $node->{stime};
die "missing start for $id" if not defined $stime;
if (($etime-$stime) < $minwidth_time) {
delete $Node{$id};
next;
}
$depthmax = $depth if $depth > $depthmax;
}
# draw canvas, and embed interactive JavaScript program
my $imageheight = (($depthmax + 1) * $frameheight) + $ypad1 + $ypad2;
$imageheight += $ypad3 if $subtitletext ne "";
my $im = SVG->new();
$im->header($imagewidth, $imageheight);
my $inc = <<INC;
<defs >
<linearGradient id="background" y1="0" y2="1" x1="0" x2="0" >
<stop stop-color="$bgcolor1" offset="5%" />
<stop stop-color="$bgcolor2" offset="95%" />
</linearGradient>
</defs>
<style type="text/css">
.func_g:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
</style>
<script type="text/ecmascript">
<![CDATA[
var details, searchbtn, matchedtxt, svg;
function init(evt) {
details = document.getElementById("details").firstChild;
searchbtn = document.getElementById("search");
matchedtxt = document.getElementById("matched");
svg = document.getElementsByTagName("svg")[0];
searching = 0;
}
// mouse-over for info
function s(node) { // show
info = g_to_text(node);
details.nodeValue = "$nametype " + info;
}
function c() { // clear
details.nodeValue = ' ';
}
// ctrl-F for search
window.addEventListener("keydown",function (e) {
if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
e.preventDefault();
search_prompt();
}
})
// functions
function find_child(parent, name, attr) {
var children = parent.childNodes;
for (var i=0; i<children.length;i++) {
if (children[i].tagName == name)
return (attr != undefined) ? children[i].attributes[attr].value : children[i];
}
return;
}
function orig_save(e, attr, val) {
if (e.attributes["_orig_"+attr] != undefined) return;
if (e.attributes[attr] == undefined) return;
if (val == undefined) val = e.attributes[attr].value;
e.setAttribute("_orig_"+attr, val);
}
function orig_load(e, attr) {
if (e.attributes["_orig_"+attr] == undefined) return;
e.attributes[attr].value = e.attributes["_orig_"+attr].value;
e.removeAttribute("_orig_"+attr);
}
function g_to_text(e) {
var text = find_child(e, "title").firstChild.nodeValue;
return (text)
}
function g_to_func(e) {
var func = g_to_text(e);
// if there's any manipulation we want to do to the function
// name before it's searched, do it here before returning.
return (func);
}
function update_text(e) {
var r = find_child(e, "rect");
var t = find_child(e, "text");
var w = parseFloat(r.attributes["width"].value) -3;
var txt = find_child(e, "title").textContent.replace(/\\([^(]*\\)\$/,"");
t.attributes["x"].value = parseFloat(r.attributes["x"].value) +3;
// Smaller than this size won't fit anything
if (w < 2*$fontsize*$fontwidth) {
t.textContent = "";
return;
}
t.textContent = txt;
// Fit in full text width
if (/^ *\$/.test(txt) || t.getSubStringLength(0, txt.length) < w)
return;
for (var x=txt.length-2; x>0; x--) {
if (t.getSubStringLength(0, x+2) <= w) {
t.textContent = txt.substring(0,x) + "..";
return;
}
}
t.textContent = "";
}
// zoom
function zoom_reset(e) {
if (e.attributes != undefined) {
orig_load(e, "x");
orig_load(e, "width");
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_reset(c[i]);
}
}
function zoom_child(e, x, ratio) {
if (e.attributes != undefined) {
if (e.attributes["x"] != undefined) {
orig_save(e, "x");
e.attributes["x"].value = (parseFloat(e.attributes["x"].value) - x - $xpad) * ratio + $xpad;
if(e.tagName == "text") e.attributes["x"].value = find_child(e.parentNode, "rect", "x") + 3;
}
if (e.attributes["width"] != undefined) {
orig_save(e, "width");
e.attributes["width"].value = parseFloat(e.attributes["width"].value) * ratio;
}
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_child(c[i], x-$xpad, ratio);
}
}
function zoom_parent(e) {
if (e.attributes) {
if (e.attributes["x"] != undefined) {
orig_save(e, "x");
e.attributes["x"].value = $xpad;
}
if (e.attributes["width"] != undefined) {
orig_save(e, "width");
e.attributes["width"].value = parseInt(svg.width.baseVal.value) - ($xpad*2);
}
}
if (e.childNodes == undefined) return;
for(var i=0, c=e.childNodes; i<c.length; i++) {
zoom_parent(c[i]);
}
}
function zoom(node) {
var attr = find_child(node, "rect").attributes;
var width = parseFloat(attr["width"].value);
var xmin = parseFloat(attr["x"].value);
var xmax = parseFloat(xmin + width);
var ymin = parseFloat(attr["y"].value);
var ratio = (svg.width.baseVal.value - 2*$xpad) / width;
// XXX: Workaround for JavaScript float issues (fix me)
var fudge = 0.0001;
var unzoombtn = document.getElementById("unzoom");
unzoombtn.style["opacity"] = "1.0";
var el = document.getElementsByTagName("g");
for(var i=0;i<el.length;i++){
var e = el[i];
var a = find_child(e, "rect").attributes;
var ex = parseFloat(a["x"].value);
var ew = parseFloat(a["width"].value);
// Is it an ancestor
if ($inverted == 0) {
var upstack = parseFloat(a["y"].value) > ymin;
} else {
var upstack = parseFloat(a["y"].value) < ymin;
}
if (upstack) {
// Direct ancestor
if (ex <= xmin && (ex+ew+fudge) >= xmax) {
e.style["opacity"] = "0.5";
zoom_parent(e);
e.onclick = function(e){unzoom(); zoom(this);};
update_text(e);
}
// not in current path
else
e.style["display"] = "none";
}
// Children maybe
else {
// no common path
if (ex < xmin || ex + fudge >= xmax) {
e.style["display"] = "none";
}
else {
zoom_child(e, xmin, ratio);
e.onclick = function(e){zoom(this);};
update_text(e);
}
}
}
}
function unzoom() {
var unzoombtn = document.getElementById("unzoom");
unzoombtn.style["opacity"] = "0.0";
var el = document.getElementsByTagName("g");
for(i=0;i<el.length;i++) {
el[i].style["display"] = "block";
el[i].style["opacity"] = "1";
zoom_reset(el[i]);
update_text(el[i]);
}
}
// search
function reset_search() {
var el = document.getElementsByTagName("rect");
for (var i=0; i < el.length; i++) {
orig_load(el[i], "fill")
}
}
function search_prompt() {
if (!searching) {
var term = prompt("Enter a search term (regexp " +
"allowed, eg: ^ext4_)", "");
if (term != null) {
search(term)
}
} else {
reset_search();
searching = 0;
searchbtn.style["opacity"] = "0.1";
searchbtn.firstChild.nodeValue = "Search"
matchedtxt.style["opacity"] = "0.0";
matchedtxt.firstChild.nodeValue = ""
}
}
function search(term) {
var re = new RegExp(term);
var el = document.getElementsByTagName("g");
var matches = new Object();
var maxwidth = 0;
for (var i = 0; i < el.length; i++) {
var e = el[i];
if (e.attributes["class"].value != "func_g")
continue;
var func = g_to_func(e);
var rect = find_child(e, "rect");
if (rect == null) {
// the rect might be wrapped in an anchor
// if nameattr href is being used
if (rect = find_child(e, "a")) {
rect = find_child(r, "rect");
}
}
if (func == null || rect == null)
continue;
// Save max width. Only works as we have a root frame
var w = parseFloat(rect.attributes["width"].value);
if (w > maxwidth)
maxwidth = w;
if (func.match(re)) {
// highlight
var x = parseFloat(rect.attributes["x"].value);
orig_save(rect, "fill");
rect.attributes["fill"].value =
"$searchcolor";
// remember matches
if (matches[x] == undefined) {
matches[x] = w;
} else {
if (w > matches[x]) {
// overwrite with parent
matches[x] = w;
}
}
searching = 1;
}
}
if (!searching)
return;
searchbtn.style["opacity"] = "1.0";
searchbtn.firstChild.nodeValue = "Reset Search"
// calculate percent matched, excluding vertical overlap
var count = 0;
var lastx = -1;
var lastw = 0;
var keys = Array();
for (k in matches) {
if (matches.hasOwnProperty(k))
keys.push(k);
}
// sort the matched frames by their x location
// ascending, then width descending
keys.sort(function(a, b){
return a - b;
});
// Step through frames saving only the biggest bottom-up frames
// thanks to the sort order. This relies on the tree property
// where children are always smaller than their parents.
var fudge = 0.0001; // JavaScript floating point
for (var k in keys) {
var x = parseFloat(keys[k]);
var w = matches[keys[k]];
if (x >= lastx + lastw - fudge) {
count += w;
lastx = x;
lastw = w;
}
}
// display matched percent
matchedtxt.style["opacity"] = "1.0";
pct = 100 * count / maxwidth;
if (pct == 100)
pct = "100"
else
pct = pct.toFixed(1)
matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
}
function searchover(e) {