The maximum allowed SWAP size on a Cloudrack VM is 1GB - this does not affect performance, as SWAP is managed at the infrastructure level, not VM level.

In a virtualisation environment, SWAP is not an effective replacement for more RAM if your machine is constantly maxing the SWAP drive.

SWAP space in Linux is used when the amount of physical memory (RAM) is full.

If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the SWAP space.

While SWAP space can help machines with a small amount of RAM, it should not be considered a replacement for more RAM.