Munin contributed plugins

#!/bin/sh

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

  echo "graph_title Memory usage (in MB)"

  echo 'graph_category system'

  echo "acti.label Active"

  echo "used.label Used"

  echo "total.label Total"

  echo "free.label Free"

  echo "swap.label Swap used"

  echo "swapt.label Swap total"

  exit 0

fi

# Memory: Real: 14M/69M act/tot  Free: 173M  Swap: 0K/612M used/tot

top -un | nawk '

function scale(v) {

  if (value ~ /G$/) { sub("G", "", v); v *= 1024 }

  else if (v ~ /M$/) sub("M", "", v)

  else if (v ~ /K$/) { sub("K", "", v); v /= 1024 }

  else v /= 1024 * 1024;

  return v;

}

function spliter(v, i) {

  split(v,a,"/");

  return(a[i]);

}

/^Memory/ {

  acti  = scale(spliter($3,1));

  used  = scale(spliter($3,2));

  free  = scale($6);

  total = used + free;

  swap  = scale(spliter($8,1));

  swapt = scale(spliter($8,2));

  print "acti.value", acti

  print "used.value", used

  print "total.value", total

  print "free.value", free

  print "swap.value", swap

  print "swapt.value", swapt

}'