#!/bin/bash
SLABVERSION=$(head -1 /proc/slabinfo | cut -f2 -d: | awk '{print $1;}')
echo /proc/slabinfo has version $SLABVERSION
[ $(echo $SLABVERSION*1000 | bc | cut -f1 -d.) -lt 1100 ] &&
	echo Warning at least version 1.1 is required
tail -n +2 /proc/slabinfo | (
LINE=----------------------------------------
PAGESIZE=4
TOTALPAGES=0
printf "%s\nName                        Memory usage\n$LINE\n" "$LINE"
while read NAME USEDENTRIES ALLOCATEDENTRIES ENTRYSIZE USEDSLABS ALLOCATEDSLABS SLABSIZE REST
do
	SIZE=$(($ALLOCATEDSLABS*$SLABSIZE))
	printf '%-17s %6d pages %6d KB\n' $NAME $SIZE $(($SIZE*$PAGESIZE))
	TOTALPAGES=$(($TOTALPAGES+$SIZE))
done
printf -- "$LINE\n%-17s %6d pages %6d KB\n$LINE\n" Total $TOTALPAGES $(($TOTALPAGES*$PAGESIZE))
)