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Plugin-Gallery: Get better 2nd level headings

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Review of category processes, system, snmp
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dipohl 2017-02-24 19:50:15 +01:00
parent 4b400a7320
commit e777037d06
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plugins/swap/swapspace-info Executable file
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#!/usr/bin/perl
# Munin plugin for monitoring swapspace usage
#
# FIELDS:
# Swap Alloc swap allocated (used)
# Swap Unalloc swap reserved but not allocated
# Swap Avail swap available for reservation
#
# Core logic developed by Brendan Gregg.
# REFERENCE: http://www.brendangregg.com/k9toolkit.html - the swap diagram.
#
# COPYRIGHT: Copyright (c) 2004 Brendan Gregg.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# (http://www.gnu.org/copyleft/gpl.html)
# Perldoc
=pod
=head1 NAME
swapspace_info - Plugin to monitor Swapspace usage
=head1 AUTHOR
Christian Braum, chrisi_braum@web.de
Core logic developed by Brendan Gregg. See K9Toolkit:
http://www.brendangregg.com/K9Toolkit/swapinfo
=head1 LICENSE
GPL 2.
=cut
# Main
use strict;
use warnings;
if ( defined $ARGV[0] )
{
if ( $ARGV[0] eq "config" )
{
&config();
}
else
{
&output();
}
}
else
{
&output();
}
sub value
{
my %h_swapvalue;
eval 'use Sun::Solaris::Kstat; 1;'
or die 'Please install Sun::Solaris::Kstat';
my $Kstat = Sun::Solaris::Kstat->new();
# --- Fetch Hardware info ---
### pagesize
$ENV{PATH} = "/usr/bin";
chomp(my $PAGESIZE = `pagesize`);
my $PAGETOMB = $PAGESIZE / (1024 * 1024);
my $PAGETOBYTE = $PAGESIZE;
my $BLOCKTOP = 512 / $PAGESIZE;
my %VMnow;
my %VMold;
my %VMinfo;
# --- Fetch VM info ---
foreach my $count (0..12)
{
#
# The values are counters that increment each second, here we
# check them several times and look for the value changing.
# (reading them once then again a second later was not reliable).
#
foreach my $var ("swap_avail","swap_alloc","swap_free")
{
$VMnow{$var} = $Kstat->{unix}->{0}->{vminfo}->{$var};
unless ($count)
{
$VMold{$var} = $VMnow{$var};
next;
}
if (($VMnow{$var} != $VMold{$var}) && (! $VMinfo{$var}))
{
$VMinfo{$var} = $VMnow{$var} - $VMold{$var};
}
}
select(undef, undef, undef, 0.1);
$Kstat->update();
}
# --- Calculations ---
### Swap
my $swap_free = $VMinfo{swap_free};
my $swap_avail = $VMinfo{swap_avail};
my $swap_alloc = $VMinfo{swap_alloc};
my $swap_unalloc = $swap_free - $swap_avail;
my $swap_unalloc_B = sprintf( "%d ", $swap_unalloc * $PAGETOBYTE );
my $swap_avail_B = sprintf( "%d ", $swap_avail * $PAGETOBYTE );
my $swap_alloc_B = sprintf( "%d ", $swap_alloc * $PAGETOBYTE );
my $swap_free_B = sprintf( "%d ", $swap_free * $PAGETOBYTE );
$h_swapvalue{"Alloc.value"} = "$swap_alloc_B";
$h_swapvalue{"Unalloc.value"} = "$swap_unalloc_B";
$h_swapvalue{"Avail.value"} = "$swap_avail_B";
return %h_swapvalue;
}
sub output
{
my %h_swapvalues=value();
print "Alloc.value " . $h_swapvalues{"Alloc.value"} . " \n";
print "Unalloc.value " . $h_swapvalues{"Unalloc.value"} . " \n";
print "Avail.value " . $h_swapvalues{"Avail.value"} . "\n";
}
sub config
{
print "graph_args --base 1024 -l 0 \n";
print "graph_vlabel Bytes\n";
print "graph_title Swapspace usage\n";
print "graph_category memory\n";
print "graph_info This graph shows what the machine uses Swapspace for.\n";
print "graph_order ";
print "Alloc ",
"Unalloc ",
"Avail ",
"\n";
print "Alloc.label Alloc \n";
print "Alloc.draw \n";
print "Alloc.info Swap used.\n";
print "Unalloc.label Unalloc \n";
print "Unalloc.draw \n";
print "Unalloc.info Swap reserved but not allocated.\n";
print "Avail.label Avail \n";
print "Avail.draw \n";
print "Avail.info Swap available.\n";
}