contrib-munin/plugins/system/dar_cpuusage

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2010-06-27 19:19:31 +02:00
#!/usr/bin/perl -w
# -*- perl -*-
=head1 NAME
dar_cpuusage - Munin plugin to monitor darwin cpu usage.
=head1 APPLICABLE SYSTEMS
Should work on any darwin (Mac OS X) system with the 'top' command.
=head1 CONFIGURATION
None needed
=head1 INTERPRETATION
The plugin runs the top command and shows the CPU usage for the machine.
=head1 BUGS
The stats are a snapshot at the time of the command - a 5 minute average would
be better.
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=head1 VERSION
v.0.0.1
=head1 AUTHOR
Copyright (C) 2010.
Original version by J.T.Sage (at) gmail (dot) com.
=head1 LICENSE
GPLv2
=cut
use Munin::Plugin;
if ( defined($ARGV[0])) {
if ($ARGV[0] eq 'autoconf') {
$uname = `uname`;
if ( not ( $uname =~ /Darwin/ ) ) { print "no (not a Darwin System)\n"; }
else {
if ( not -x "/usr/bin/top" ) { print "no (top not found)\n"; }
else {
print "yes\n";
}
}
exit 0;
}
if ( $ARGV[0] eq "config" ) {
print "graph_title CPU usage\n";
print "graph_args --base 1000 -r --lower-limit 0 --upper-limit 100\n";
print "graph_vlabel %\n";
print "graph_scale no\n";
print "graph_category system\n";
print "sys.label system\n";
print "sys.type GAUGE\n";
print "sys.min 0\nsys.draw AREA\n";
print "user.label user\n";
print "user.type GAUGE\n";
print "user.min 0\nuser.draw STACK\n";
print "idle.label idle\n";
print "idle.type GAUGE\n";
print "idle.min 0\nidle.draw STACK\n";
exit 0;
}
}
@top = `top -l1 -n0 -u`;
$quit = 0;
for ( $i = 1; ($i < $#top and $quit == 0); $i++ ) {
if ( $top[$i] =~ /^CPU/ ) {
$usr = $sys = $idl = $top[$i];
$usr =~ s/^.+?: (\d+\.\d+)\% user.+$/$1/;
chomp($usr);
$sys =~ s/^.+?, (\d+\.\d+)\% sys.+$/$1/;
chomp($sys);
$idl =~ s/^.+?, (\d+\.\d+)\% idle.+$/$1/;
chomp($idl);
print "sys.value " . $sys . "\n";
print "user.value " . $usr . "\n";
print "idle.value " . $idl . "\n";
$quit = 1;
}
}
# vim:syntax=perl