#!/bin/sh
#
# Plugin to monitor swap IO in number of blocks per second.
#
# Parameters:
#
# 	config   (required)
# 	autoconf (optional - used by munin-config)
#
# Magic markers (used by munin-config and some installation scripts (i.e.
# optional)):
#%# family=auto
#%# capabilities=autoconf



if [ "$1" = "autoconf" ]; then
    if [ -x /usr/bin/vmstat ]; then
        /usr/bin/vmstat > /dev/null
    	if [ $? = "0" ]; then
	    	echo yes
    		exit 0
    	else
		    echo no
		    exit 0
	    fi
    else
        echo no
        exit 0
    fi
fi

if [ "$1" = "config" ]; then

	echo 'graph_title Swap in/out'
	echo 'graph_args -l 0 --base 1000'
	echo 'graph_vlabel pages per ${graph_period} in (-) / out (+)'
	echo 'graph_category system'
	echo 'graph_info This graph shows the swap activity of the system.'
	echo 'swap_in.label swap'
	echo 'swap_in.type DERIVE'
	echo 'swap_in.min 0'
	echo 'swap_in.max 100000'
	echo 'swap_in.graph no'
	echo 'swap_out.label swap'
	echo 'swap_out.type DERIVE'
	echo 'swap_out.min 0'
	echo 'swap_out.max 100000'
	echo 'swap_out.negative swap_in'
	exit 0
fi

/usr/bin/vmstat | /usr/bin/awk 'END { print "swap_in.value " $8 "\nswap_out.value " $9 }'

#awk '/swap/ { print "swap_in.value " $2 "\nswap_out.value " $3 }' < /proc/stat
