The swap partition in Linux is similar to the virtual memory in windows. It is used to separate some memory pages not used in the memory.
Replace an algorithm with a file system to free up more memory to run other programs.
When the physical memory of is very small, the system performance is generally improved by creating swap partitions.
A temporary partition file is created (all files in Linux ).
(1). Create a file of the specified size
Dd if =/dev/zero of = file name bs = 1 M (note: the unit is set here) count = 100 (Note: Here is the number, create 100 files with a size of 1 MB, that is, create a file with a size of MB)
(2) format the file as a swap partition:
Mkswap swap partition File
(3) Enable swap partition files
Swapon swap partition file (including full path)
(4) view usage
Free
(5) Disable swap partition files
Swapoff swap partition File
Instance:
Assume that a m swap partition file is created in the root directory.
Dd if =/dev/zero of =/swapfile bs = 1 M count = 100
Mkswap/swapfile
Swapon/swapfile
Free # view information
Swapoff/swapfile
Author: "huangyandong"