/usr/share/munin/plugins/lpar_cpu is in munin-plugins-extra 2.0.19-3ubuntu0.3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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 | #!/usr/bin/perl -w
#
# Plugin to monitor physical cpu usage in an IBM POWER P5 / OpenPower LPAR
#
# Usage: Place in /etc/munin/plugins (or make a symlink to it there)
#
# Parameters understood:
#
# config
# autoconf
#
# This should be run as root, so drop a file with something like this in
# /etc/munin/plugin-conf.d/lpar_cpu:
# [lpar_cpu]
# user root
#
# Great thanks to Nigel Griffith of IBM for the magic to get these values
#
# Author: Ingvar Hagelund <ingvar(at)linpro.no>
#
# Licence: GNU General Public Licence v2.0,
# see http://www.gnu.org/copyleft/gpl.html
use strict;
my $stats="/proc/ppc64/lparcfg";
my $cpuinfo="/proc/cpuinfo";
my $seconds=2;
my $counter="";
my $after="";
my $timebase="";
sub readstats {
my $stats=shift;
my $purr;
open (STATS,"$stats") or die "Unable to read $stats, $!";
while (<STATS>) {
if ( /^purr\=(\d+)$/ ) { $purr = $1; }
}
close STATS;
return $purr;
}
sub error {
print "something horrible happened\n";
exit 2;
}
################
#
# Main
#
#
if ( defined $ARGV[0] ) {
if ( $ARGV[0] eq 'autoconf' ) {
if ( -x $stats && -e $cpuinfo ) {
print "yes\n";
exit 0;
}
else {
print "no (I need $stats and $cpuinfo)\n";
exit 0;
}
}
elsif ( $ARGV[0] eq 'config' ) {
print "graph_title LPAR physical CPU usage\n";
print "graph_vlabel percent\n";
print "graph_category system\n";
print "cpu.label cpu\n";
print "cpu.type DERIVE\n";
print "cpu.min 0\n";
exit 0;
}
}
$counter=readstats($stats);
open (CPUINFO,$cpuinfo) or die "Unable to read $cpuinfo, $!";
while (<CPUINFO>) {
if (/^timebase\s+\:\s+(\d+)/) { $timebase=$1; }
}
close CPUINFO;
error() if $cpuinfo eq "";
error() if $counter eq "";
error() if $timebase eq "";
my $val=100*$counter/$timebase;
$val =~ s/(\d+)\..+/$1/;
print "cpu.value " . $val . "\n";
exit 0;
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