Actually that means you're good, the less you're using Swap, the better, RAM will always be faster than on a HDD (or even SSD). Using 34% of your memory, are you expecting it to use Swap too? That would be poor Memory Management.
Ideally, you'd not be using Swap until there's no more RAM left to spare, yet I've seen computers use the Swap partition even when not under a lot of strain, some of these had 8GB installed & using a few hundred MiB's of Swap. It makes no sense as to why the RAM is not maxed out, and yet using Swap, this only slows the computer.
Did you check out any of my tips below? As to the Swappiness value, you should set it at 10 & leave it. Like such, first the install of the needed tools. If you have these already & can access the file, skip to the last quote & copy/paste the lines.
sudo apt-get install gksu leafpad
Now for doing it.
gksudo leafpad /etc/sysctl.conf
Scroll to the bottom of the text file and add your swappiness parameter to override the default. Copy/paste the following blue lines:
# Decrease swap usage to a more reasonable level
Make sure to add that line below the last # symbol, if one's there, save the file & reboot. It's permanent.
Here's some other tips that may prove to be of assistance to you.
Edited by cat1092, 18 December 2015 - 06:05 AM.