The use of the swap memory by default on Kernel 2.6.xx is set to 60% that means that the system will use intensively the swap memory, this is good if we have a small amount of memory and lot of load on our PC or server, but if we have plenty of RAM or we are using a Desktop machine, we maybe do not need this setting, let’s see how to change it. This is valid for Ubuntu, Debian, Fedora and CentOS
On a Terminal do this as root (use sudo if running Ubuntu)
You should see 60, now change it to 10
sysctl -w vm.swappiness=10
Now is time to work for some minutes with some applications if you see that is better, you can make the changes permanent.
and add this line at the end (if it does not exist, otherwise edit it)