Quelle hotcoldgraph.pl Sprache: Shell

#!/usr/bin/perl -w
#
# hotcoldgraph.pl flame/cold stack grapher.
#
# EXPERIMENTAL: This is a work in progress, and may not work properly.
#
# This takes on and off-cpu stack timings (see hcstackcollapse.pl) and
# renders a call graph, allowing latency in codepaths to be quickly identified.
#
# USAGE: ./hotcoldgraph.pl input.txt > graph.svg
#
#        grep funcA input.txt | ./hotcoldgraph.pl > graph.svg
#
# The input is stack frames and sample counts formatted as single lines.  Each
# frame in the stack is comma separated, with a space and count at the end of
# the line.  These can be generated using DTrace with stackcollapse.pl.
#
# The output graph shows relative presense 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 alphabeticly.
#
# 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:
# http://blogs.sun.com/realneel/entry/visualizing_callstacks_via_dtrace_and
#
# For the on-CPU graph only, see flamegraph.pl.
#
# Copyright 2013 Joyent, Inc.  All rights reserved.
# Copyright 2013 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 usr/src/OPENSOLARIS.LICENSE
# 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 usr/src/OPENSOLARIS.LICENSE.
# 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
#
# 10-Sep-2011 Brendan Gregg Created this.

use strict;

# tunables
my $fonttype = "Verdana";
my $imagewidth = 1200;  # max width, pixels
my $frameheight = 16;  # max height is dynamic
my $fontsize = 12;  # base text size
my $minwidth = 0.1;  # min function width, pixels

# internals
my $ypad1 = $fontsize * 4; # pad top, include title
my $ypad2 = $fontsize * 2 + 10; # pad bottom, include labels
my $xpad = 10;   # pad lefm and right
my $timemax = 0;
my $depthmax = 0;
my %Events;

# SVG functions
{ package SVG;
sub new {
  my $class = shift;
  my $self = {};
  bless ($self, $class);
  return $self;
}

sub header {
  my ($self, $w, $h) = @_;
  $self->{svg} .= <<SVG;
<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" width="$w" height="$h" onload="init(evt)" viewBox="0 0 $w $h" xmlns="http://www.w3.org/2000/svg" >
SVG
}

sub include {
  my ($self, $content) = @_;
  $self->{svg} .= $content;
}

sub colorAllocate {
  my ($self, $r, $g, $b) = @_;
  return "rgb($r,$g,$b)";
}

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) = @_;
  $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}\n";
}
1;
}

sub color {
my $type = shift;
if (defined $type and $type eq "hot") {
  my $r = 205 + int(rand(50));
  my $g = 0 + int(rand(230));
  my $b = 0 + int(rand(55));
  return "rgb($r,$g,$b)";
}
if (defined $type and $type eq "cold") {
  my $r = 0 + int(rand(40));
  my $b = 205 + int(rand(50));
  my $g = 0 + int(rand(150));
  return "rgb($r,$g,$b)";
}
return "rgb(0,0,0)";
}

my %Node;
my %Tmp;

sub flow {
my ($a, $b, $ca, $cb, $v) = @_;
my @A = split ",", $a;
my @B = split ",", $b;

my $len_a = $#A;
my $len_b = $#B;
$depthmax = $len_b if $len_b > $depthmax;

my $i = 0;
my $len_same = 0;
for (; $i <= $len_a; $i++) {
  last if $i > $len_b;
  last if $A[$i] ne $B[$i];
}
$len_same = $i;
$len_same = 0 if $ca != $cb;

for ($i = $len_a; $i >= $len_same; $i--) {
  my $k = "$A[$i]-$i";
  # a unique ID is constructed from func-depth-etime;
  # func-depth isn't unique, it may be repeated later.
  $Node{"$k-$v-$ca"}->{stime} = $Tmp{$k}->{stime};
  delete $Tmp{$k}->{stime};
  delete $Tmp{$k};
}

for ($i = $len_same; $i <= $len_b; $i++) {
  my $k = "$B[$i]-$i";
  $Tmp{$k}->{stime} = $v;
}
}

# Parse input
my @Data = <>;
my $laststack = "";
my $lastcpu = 0;
my $time = 0;
foreach (sort @Data) {
chomp;
my ($stack, $cpu, $samples) = split ' ';
$stack = ",$stack";
next unless defined $samples;
flow($laststack, $stack, $lastcpu, $cpu, $time);
$time += $samples;
$laststack = $stack;
$lastcpu = $cpu;
}
flow($laststack, "", $lastcpu, 0, $time);
$timemax = $time or die "ERROR: No stack counts found\n";

# Draw canvas
my $widthpertime = ($imagewidth - 2 * $xpad) / $timemax;
my $imageheight = ($depthmax * $frameheight) + $ypad1 + $ypad2;
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="#eeeeee" offset="5%" />
  <stop stop-color="#eeeeb0" offset="95%" />
</linearGradient>
</defs>
<style type="text/css">
rect[rx]:hover { stroke:black; stroke-width:1; }
text:hover { stroke:black; stroke-width:1; stroke-opacity:0.35; }
</style>
<script type="text/ecmascript">
<![CDATA[
var details;
function init(evt) { details = document.getElementById("details").firstChild; }
function s(info) { details.nodeValue = info; }
function c() { details.nodeValue = ' '; }
]]>
</script>
INC
$im->include($inc);
$im->filledRectangle(0, 0, $imagewidth, $imageheight, 'url(#background)');
my ($white, $black, $vvdgrey, $vdgrey) = (
$im->colorAllocate(255, 255, 255),
$im->colorAllocate(0, 0, 0),
$im->colorAllocate(40, 40, 40),
$im->colorAllocate(160, 160, 160),
    );
$im->stringTTF($black, $fonttype, $fontsize + 5, 0.0, int($imagewidth / 2), $fontsize * 2, "Flame Graph", "middle");
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $xpad, $imageheight - ($ypad2 / 2), 'Function:');
$im->stringTTF($black, $fonttype, $fontsize, 0.0, $xpad + 60, $imageheight - ($ypad2 / 2), " ", "", 'id="details"');

# Draw frames
foreach my $id (keys %Node) {
my ($func, $depth, $etime, $cpu) = split "-", $id;
die "missing start for $id" if !defined $Node{$id}->{stime};
my $stime = $Node{$id}->{stime};
my $samples = $etime - $stime;

my $x1 = $xpad + $stime * $widthpertime;
my $x2 = $xpad + $etime * $widthpertime;
my $width = $x2 - $x1;
next if $width < $minwidth;

my $y1 = $imageheight - $ypad2 - ($depth + 1) * $frameheight + 1;
my $y2 = $imageheight - $ypad2 - $depth * $frameheight;

my $info;
if ($func eq "" and $depth == 0) {
  $info = "all ($samples ms, 100%)";
} else {
  my $pct = sprintf "%.2f", ((100 * $samples) / $timemax);
  $info = "$func ($samples ms, $pct%)";
}
my $color = $cpu ? "hot" : "cold";
$im->filledRectangle($x1, $y1, $x2, $y2, color($color), 'rx="2" ry="2" onmouseover="s(' . "'$info'" . ')" onmouseout="c()"');

if ($width > 50) {
  my $chars = int($width / (0.7 * $fontsize));
  my $text = substr $func, 0, $chars;
  $text .= ".." if $chars < length $func;
  $im->stringTTF($black, $fonttype, $fontsize, 0.0, $x1 + 3, 3 + ($y1 + $y2) / 2, $text, "",
      'onmouseover="s(' . "'$info'" . ')" onmouseout="c()"');
}
}

print $im->svg;

quality95%

¤ Dauer der Verarbeitung: 0.25 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.