Created
November 25, 2014 19:34
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#!/usr/bin/perl | |
use strict; | |
use warnings; | |
use Data::Dumper; | |
my @ps_output = `ps ax -o pid,ppid,rss,command`; | |
shift @ps_output; | |
my %processes = map{ $_->[0], { pid => $_->[0], ppid => $_->[1], rss => $_->[2], command => $_->[3] } } map { [split(/\s+/, $_, 4)] } map { chomp; s/^\s+//; $_ } @ps_output; | |
foreach my $ps_info (values %processes) { | |
if($ps_info->{command} =~ /fb-(\w+)(-\w+)\.sh/) { | |
my $service = $1; | |
my $parent_pid = "fb-$service"; | |
$processes{$parent_pid} ||= { | |
ppid => 1, | |
pid => $parent_pid, | |
rss => 0, | |
command => '', | |
}; | |
$ps_info->{ppid} = $parent_pid; | |
} | |
} | |
foreach my $ps_info (values %processes) { | |
$ps_info->{children} ||= []; | |
my $pps_info = $processes{$ps_info->{ppid}}; | |
$pps_info->{children} ||= []; | |
push @{$pps_info->{children}}, $ps_info->{pid}; | |
} | |
sub total_rss { | |
my $ps_info = shift; | |
my $total_rss = $ps_info->{rss}; | |
foreach my $children (@{$ps_info->{children}}) { | |
$total_rss += total_rss($processes{$children}); | |
} | |
$total_rss; | |
} | |
foreach my $ps_info (values %processes) { | |
$ps_info->{total_rss} = total_rss($ps_info); | |
} | |
sub print_tree { | |
my ($pad, $pid) = @_; | |
$pad ||= ''; | |
my $ps_info = $processes{$pid}; | |
print $pad, $ps_info->{total_rss}, "KB\tpid=", $pid, "\t", $ps_info->{command}, "\n"; | |
my @children = sort { $processes{$b}{total_rss} <=> $processes{$a}{total_rss} } @{$ps_info->{children}}; | |
foreach my $child (@children) { | |
print_tree("\t".$pad, $child) | |
} | |
} | |
print_tree('+ ', 1); | |
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