"modprobe" "-r" "brd"
 "modprobe" "brd" "rd_nr=1" "rd_size=50331648"
dmsetup remove_all
wipefs -a --force /dev/ram0
mkfs -t f2fs /dev/ram0
mkdir -p /fs/ram0
mount -t f2fs /dev/ram0 /fs/ram0
mkdir /export
mount -t tmpfs nfsv4_root_export /export
mkdir -p /export//fs/ram0
mount --bind /fs/ram0 /export//fs/ram0
echo '/export//fs/ram0 *(rw,no_subtree_check,no_root_squash)' >> /etc/exports
/etc/init.d/rpcbind start
/etc/init.d/nfs-common start
systemctl restart nfs-server
mkdir -p /nfs/ram0
mount -t nfs -o vers=4 localhost:/fs/ram0 /nfs/ram0

for cpu_dir in /sys/devices/system/cpu/cpu[0-9]*
do
	online_file="$cpu_dir"/online
	[ -f "$online_file" ] && [ "$(cat "$online_file")" -eq 0 ] && continue

	file="$cpu_dir"/cpufreq/scaling_governor
	[ -f "$file" ] && echo "performance" > "$file"
done

 "fs_mark" "-d" "/nfs/ram0/1" "-n" "10240" "-L" "1" "-S" "1" "-s" "4194304"