case "$MODE" in
    after-install)
	if [ -f "$ROOT"/etc/sysctl.conf ];then
	    if grep -q '^[[:blank:]]*vm.swappiness=' "$ROOT"/etc/sysctl.conf; then
		sed -i -e 's/^\([[:blank:]]*vm.swappiness=\).*$/\1100/'
	    else
		echo "# to avoid swap-related race when X server RSS is sharply increasing" >> "$ROOT"/etc/sysctl.conf
		echo "vm.swappiness=100" >> "$ROOT"/etc/sysctl.conf
	    fi
	fi
        ;;
esac
