[CentOS] How often is kernel "touching" swap partition?

[Jorge Fábregas]

On 07/23/2013 01:22 PM, Martin Šťastný wrote:
>  how often is kernel touching swap space 

There's a kernel tunable called "swappiness" [1] to control that.  You
can add an entry in /etc/sysctl.conf like this:

vm.swappiness=0

...and the kernel will avoid, as much as it can, to use swap.

HTH,
Jorge

[1]: http://en.wikipedia.org/wiki/Swappiness