Create swap Partition on Centos & Amazon Linux

[ Create Swap Partition on Centos & Amazon Linux ]

# dd if=/dev/zero of=/swap count=2048 bs=1MiB
# chmod 600 /swap
# mkswap /swap
# swapon /swap
# vim /etc/fstab
/swap swap swap sw 0 0
# swapon -s

[ Clear Swap Cache Memory / Drop Cache Memory ]
# echo 3 > /proc/sys/vm/drop_caches
# sync && echo 3 > /proc/sys/vm/drop_caches