## Blog post

After an extensive use with a lot of modifications to the core system, I want to share some tweaks, to speed up your Ubuntu system. Please note that applying these tweaks of course, you're not turning your system into a rocket :), but you may achieve considerable speed up in some cases. To check your overall system perfomance, there are a lot of free tools (e.g. bootchart).

### Change swappiness value

This tweak is noticeable on computers with relatively low RAM memory (1 GB or less), when system accesses the hard disk too much, because of the virtual memory, called swap. Ubuntu's inclination to use the swap, is determined by swappiness value. The lower the value, the longer it takes before Ubuntu starts using the swap. On a scale of 0-100, the default value is 60, which is much too high for normal desktop use (only fit for servers). You can check the current swappiness value by typing in the terminal:

cat /proc/sys/vm/swappiness

To change the swappiness value and improve the cache management, type in the terminal:

sudo pico /etc/sysctl.conf

and scroll to the bottom of the file to add the following lines.

# Decrease swap usage to a workable levelvm.swappiness = 10
# Improve cache managementvm.vfs_cache_pressure = 50

sudo apt-get install preload
sudo chmod +x ubuntu_perfomance.sh