#!/bin/sh

prefix="vfs.zfs."
prefix_kstat="kstat.zfs.misc.arcstats."

echo "ARC top-level breakdown:"
for i in size hdr_size data_size other_size l2_hdr_size ; do
	val=$(sysctl -n ${prefix_kstat}${i})
	eval $i=$val
	echo "$i: $val"
done
echo ""

echo "ARC size vs hdr_size + data_size + other_size + l2_hdr_size:"
echo "$size vs $(($hdr_size + $data_size + $other_size $l2_hdr_size))"
echo ""

echo "ARC Data breakdown:"
for i in mfu_size mru_size anon_size ; do
	val=$(sysctl -n ${prefix}${i})
	eval $i=$val
	echo "$i: $val"
done
echo ""

echo "Data size vs mfu_size + mru_size + anon_size:"
echo "$data_size vs $(($mfu_size + $mru_size + $anon_size))"
echo ""

for typ in mfu mru anon ; do
	echo "$typ breakdown:"
	for i in data_lsize metadata_lsize ; do
		val=$(sysctl -n ${prefix}${typ}_${i})
		eval $i=$val
		echo "$i: $val"
#		if [ "anon" != "$typ" ] ; then
#			val=$(sysctl -n ${prefix}${typ}_ghost_${i})
#			eval ghost_$i=$val
#			echo "ghost_$i: $val"
#		fi
	done
	echo ""

	eval size=\${${typ}_size}
	echo "other (overhead? ghost entries?): $(($size - $data_lsize - $metadata_lsize))"
	echo ""
done