The parameter named swappiness controls the tendency of the kernel to move processes out of physical memory and onto the swap disk.
- swappiness can have a value of between 0 and 100
- swappiness=0 tells the kernel to avoid swapping processes out of physical memory for as long as possible
- swappiness=100 tells the kernel to aggressively swap processes out of physical memory and move them to swap cache
Reducing the default value of swappiness will probably improve overall performance for a typical Ubuntu desktop installation.
For Desktop users A value of swappiness=10 is recommended.
For Server , it is better to use swappiness=60
How to Check swappiness value
Open a terminal and type the following command
$ cat /proc/sys/vm/swappiness
$ sudo sysctl vm.swappiness=10
How to permanently change the swappiness value
$ gksudo gedit /etc/sysctl.conf
change the value of
vm.swappiness = 10
No rebooting required