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#!/usr/bin/sh
# -*- sh -*-
: << =cut
=head1 NAME
swap - Plugin to monitor swap IO in number of blocks per second
=head1 CONFIGURATION
No configuration
=head1 AUTHOR
Unknown author
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
. "$MUNIN_LIBDIR/plugins/plugin.sh"
if [ "$1" = "autoconf" ]; then
if [ -r /proc/stat ]; then
echo yes
exit 0
else
echo "no (no /proc/stat)"
exit 0
fi
fi
if [ "$1" = "config" ]; then
echo 'graph_title Swap in/out'
echo 'graph_args -l 0 --base 1000'
# shellcheck disable=SC2016
echo 'graph_vlabel pages per ${graph_period} in (-) / out (+)'
echo 'graph_category system'
echo 'swap_in.label swap'
echo 'swap_in.type DERIVE'
echo 'swap_in.max 100000'
echo 'swap_in.min 0'
echo 'swap_in.graph no'
print_warning swap_in
print_critical swap_in
echo 'swap_out.label swap'
echo 'swap_out.type DERIVE'
echo 'swap_out.max 100000'
echo 'swap_out.min 0'
echo 'swap_out.negative swap_in'
print_warning swap_out
print_critical swap_out
exit 0
fi
if [ -f /proc/vmstat ]; then
awk '/pswpin/ { print "swap_in.value " $2 } /pswpout/ { print "swap_out.value " $2 }' < /proc/vmstat
else
awk '/swap/ { print "swap_in.value " $2 "\nswap_out.value " $3 }' < /proc/stat
fi