Unity desktop environment consumes lot of computer’s memory. I’ve recently found good article about
4 simple tweaks to improve Unity performance on Ubuntu.

Here is the short summary of that tweaks:

Remove Unwanted Lenses

It will speed up loading data under “Super” button.

sudo apt-get autoremove unity-lens-music unity-lens-photos unity-lens-gwibber unity-lens-shopping unity-lens-video

Install Compiz Config Settings Manager

sudo apt-get install compizconfig-settings-manager

In Compiz Config Settings Manager perform the following operations:

  • Disable Animations and Fading windows
  • Set the Texture Filter to “Fast”

After that OS won’t use additional resources for performing animations.

Install Preload

sudo apt-get install preload

Preload analyzes applications, which are currently used and predicts, which applications might be used. After proper analysis, it loads to memory commonly used software. That process can drastically boost speed of loading programs and overall Ubuntu performance.