Android ZRAM usage.

#!/system/bin/sh
# Get current swap usage for all running processes
# Original author:Erik Ljungstrom 27/05/2011
# Edit: @chenshaoju
# Use '|sort -n -k 5' to sort
SUM=0
OVERALL=0
for DIR in `find /proc/ -maxdepth 1 -type d | egrep "^/proc/[0-9]"` ; do
        PID=`echo $DIR | cut -d / -f 3`
        for SWAP in `grep Swap $DIR/smaps 2>/dev/null| awk '{ print $2 }'`
        do
                let SUM=$SUM+$SWAP
        done
        echo "PID=$PID - Swap used: $SUM"
        let OVERALL=$OVERALL+$SUM
        SUM=0

done
echo "Overall swap used: $OVERALL"