Munin contributed plugins

#!/bin/sh

# Kernel Memory usage stats.

# Author: alex@trull.org 

# 

# Based on the short script at http://wiki.freebsd.org/ZFSTuningGuide (20080820)

#

# Parameters:

#

# 	config   (required)

# 	autoconf (optional - only used by munin-config)

#

# Magic markers (optional - only used by munin-config and some

# installation scripts):

#%# family=auto

#%# capabilities=autoconf

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

    if [ -x /sbin/sysctl ]; then

        /sbin/sysctl vm.kmem_size_max > /dev/null

    	if [ $? = "0" ]; then

	    	echo yes

    		exit 0

    	else

		    echo no

		    exit 1

	    fi

    else

        echo no

        exit 1

    fi

fi

TEXT=`kldstat | tr a-f A-F | awk 'BEGIN {print "ibase=16"}; NR > 1 {print $4}' | bc | awk '{a+=$1}; END {print a}'`

DATA=`vmstat -m | sed 's/K//' | awk '{a+=$3}; END {print a*1024}'`

TOTAL=`echo $DATA $TEXT | awk '{print $1+$2}'`

MAX=`sysctl vm.kmem_size_max | awk '{print $2}'`

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

        echo 'graph_args --base 1024 -l 0 --vertical-label Bytes'

	echo 'graph_title Kernel Memory usage'

	echo 'graph_category system'

	echo 'graph_info This graph shows kmem usage.'

	echo 'graph_order text data'

	echo 'text.label text'

	echo 'text.info kmem text'

	echo 'text.draw AREA'

        echo 'data.label data'

        echo 'data.info kmem data' 

        echo 'data.draw STACK'

        echo 'total.label total'

        echo 'total.info kmem total'

        echo 'total.draw LINE'

        echo 'max.label max'

        echo 'max.info kmem max'

        echo 'max.draw LINE2'

	exit 0

fi

echo "text.value $TEXT"

echo "data.value $DATA"

echo "total.value $TOTAL"

echo "max.value $MAX"