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|
#!/usr/bin/perl
#
# tcsim_plot - Plot various aspects of tcsim_filter output
#
# Written 2001,2002 by Werner Almesberger
# Copyright 2001 EPFL-ICA
# Copyright 2002 Bivio Networks, Werner Almesberger
#
use IO::Handle;
$color = 1;
undef $ps_file;
$type = "rate";
$jiffies = 0;
$avg = 1;
$user_cmd = "";
sub usage
{
print STDERR "usage: $0 [-a samples] [-j] [-m] [-t plot_type]\n";
print STDERR (" "x 18)."[-p ps_file | -jpeg jpeg_file | -png png_file]\n";
print STDERR (" "x 18)."[-cmd command ...] [file ...] \n";
print STDERR " -a samples Average over the number of samples\n";
print STDERR " -j Time is in jiffies, not seconds\n";
print STDERR " -m Monochrome output\n";
print STDERR " -cmd command Send command to gnuplot before plotting\n";
print STDERR " -p ps_file Generate Postscript output (- for stdout)".
"\n";
print STDERR " -jpeg jpeg_file Generate JPEG output (- for stdout)\n";
print STDERR " -png png_file Generate PNG output (- for stdout)\n";
print STDERR " -t plot_type rate (default), iat, cumul, delay\n";
exit(1);
}
while ($ARGV[0] =~ /^-/) {
$arg = shift;
if ($arg eq "-m") { $color = 0; }
elsif ($arg eq "-a") {
$avg = shift;
&usage unless $avg =~ /^\d+$/;
}
elsif ($arg eq "-p" || $arg =~ /-?-ps/) {
$ps_file = shift;
&usage if defined $jpeg_file || defined $png_file;
&usage unless defined $ps_file;
}
elsif ($arg =~ /-?-jpe?g/) {
$jpeg_file = shift;
&usage if defined $ps_file || defined $png_file;
&usage unless defined $jpeg_file;
}
elsif ($arg =~ /-?-png/) {
$png_file = shift;
&usage if defined $jpeg_file || defined $ps_file;
&usage unless defined $png_file;
}
elsif ($arg eq "-cmd") {
$_cmd = shift;
&usage unless defined $_cmd;
$user_cmd .= $_cmd."\n";
}
elsif ($arg eq "-t") {
$type = shift;
&usage unless $type =~ /^(rate|iat|cumul|delay)$/;
}
else {
&usage;
}
}
print STDERR "warning: -m ignored with --jpeg\n"
if defined $jpeg_file && !$color;
$stdout = 0;
if (defined $ps_file) {
$gp = "set terminal postscript eps ".($color ? "color solid" :
"monochrome"). "\n";
$gp .= "set output \"$ps_file\"\n" unless $ps_file eq "-";
$stdout = $ps_file eq "-";
$opt = "";
}
elsif (defined $png_file) {
$gp = "set terminal png ".($color ? "color" : "monochrome"). "\n";
$gp .= "set output \"$png_file\"\n" unless $png_file eq "-";
$stdout = $png_file eq "-";
$opt = "";
}
elsif (defined $jpeg_file) {
$gp = "set terminal jpeg\n";
$gp .= "set output \"$jpeg_file\"\n" unless $jpeg_file eq "-";
$stdout = $jpeg_file eq "-";
$opt = "";
}
else {
$opt = ($color ? "" : "-mono ")."-persist";
}
$tmp_num = 0;
while (<>) {
chop;
if (/^#/) {
print "$_\n" unless $stdout;
next;
}
if (/\d+\.\d+\s+\S\s+:\s+/) {
print STDERR
"unrecognized input - did you rember to use tcsim_filter ?\n";
exit(1);
}
die unless /^(\d+\.\d+)\s+(\S+)\s+(\d+)/;
if (($type eq "rate" || $type eq "iat") && !defined $last_time{$2}) {
$last_time{$2} = $1;
$last_size{$2} = $3;
next;
}
if (!defined $fh{$2}) {
$fh{$2} = IO::Handle->new();
$name = ".plot_$tmp_num.tmp";
$tmp_num++;
open($fh{$2},">$name") || die "create $name: $!";
$set{$2} = $name;
$unused{$2} = 1;
if ($type eq "cumul") {
print { $fh{$2} } "0 0\n" || die "write $name: $!";
}
}
$weight = 1;
if ($type eq "rate") {
if ($last_time{$2} == $1) {
$last_size{$2} += $3;
next;
}
$weight = $1-$last_time{$2};
$y = $last_size{$2}*8.0;
}
if ($type eq "iat") {
$y = $1-$last_time{$2};
}
if ($type eq "cumul") {
$cumul{$2} += $3;
$y = $cumul{$2};
}
if ($type eq "delay") {
if (substr($2,0,1) eq "E") {
$enq{$'} = $1;
next;
}
die "ghost packet$' from nowhere" unless defined $enq{$'};
$y = $1-$enq{$'};
delete $enq{$'};
}
if (@{ $hist{$2} } == $avg) {
$sum{$2} -= shift @{ $hist{$2} };
$weight{$2} -= shift @{ $hist_weight{$2} };
}
$sum{$2} += $y;
$weight{$2} += $weight;
push(@{ $hist{$2} },$y);
push(@{ $hist_weight{$2} },$weight);
print { $fh{$2} } "$1 ".($sum{$2}/$weight{$2})."\n" || die "write: $!";
delete $unused{$2};
$last_time{$2} = $1;
$last_size{$2} = $3;
}
for (values %fh) {
close $_ || die "close: $!";
}
if ($jiffies) {
$gp .= "set xlabel \"Time (jiffies)\"\n";
}
else {
$gp .= "set xlabel \"Time (sec)\"\n";
}
if ($type eq "rate") {
$gp .= "set ylabel \"Rate (bps)\"\n";
}
if ($type eq "iat") {
$gp .= "set ylabel \"Inter-arrival time (sec)\"\n";
}
if ($type eq "cumul") {
$gp .= "set ylabel \"Cumulative (bytes)\"\n";
}
if ($type eq "delay") {
$gp .= "set ylabel \"Queuing delay (sec)\"\n";
}
$gp .= "set yrange [0:]\n";
if (!keys %set) {
print STDERR "no data sets\n";
exit(1);
}
@tmpfile = values %set;
for (keys %unused) {
delete $set{$_};
}
$gp .= "set data style lines\n";
$gp .= $user_cmd."plot";
# open(GP,">.gnuplot") || die "open .gnuplot: $!";
for (@tmp = sort keys %set) {
$gp .= " \"$set{$_}\" title \"$_\"";
$gp .= $_ eq $tmp[$#tmp] ? "\n" : ", \\\n";
}
# Otherwise, gnuplot plots twice, apparently no matter what else we do. Weird.
$gp .= "set output \"/dev/null\"\n";
push(@tmpfile,".gnuplot");
open(GP,">.gnuplot") || die "open .gnuplot: $!";
print GP $gp || die "write .gnuplot: $!";
close GP || die "close .gnuplot: $!";
die "gnuplot: $!" if system("gnuplot $opt .gnuplot") == 1;
unlink(@tmpfile);
|
