Swap is space on a disk that is reserved to be used as virtual memory. A swap partition is not present on Cloud Servers by default, but swap can be added to a server by allocating a swap file.

We have already discussed about use of swap space and the amount of swap size. To increasing swap size have used dd command and swap partition.

On the previous post we have created swap space using dd command and also another method is can make a new swap partition using fdisk.

Normally the swap space partitioned twice of RAM space, for example if your system RAM space is 2048 MB and swap space is 4096 MB.