Linux Extended Swap partition

One, view existing memory and swap

# free-m

Total used free shared buffers Cached

MEM:2026 1931 95 0 15 1789

-/+ buffers/cache:127 1899

swap:3074 2 3071

Second, create a 2G file with the DD command (2g=1024*1024*2=2097152)

#dd If=/dev/zero of=/var/swapfile bs=1024x768 count=2097152

Third, create it as a Linux swap virtual Exchange file

#mkswap/var/swapfile

3. Activate and use/var/swapfile1 to swap files

#swapon/var/swapfile

4. You can use Free-m to view swap size and use swapon-s to view swap status:

5, set the system to automatically activate the virtual Exchange file after startup.

#vi/etc/fstab

/var/swapfile swap swap defaults 0 0

This article is from the "Haina Rivers" blog, please be sure to keep this source http://yuxing34.blog.51cto.com/1426860/1621540

Linux Extended Swap partition