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The Unity Dash and HUD are slow to open, sometimes freezing the system for up to four seconds when I first hit the Alt or Super keys. Is there a simple way to find out where the time is going?

The folks in #ubuntu-unity advised that I could run valgrind --tool=callgrind compiz --replace to generate a profile of the application, however I want a simpler place from which to start troubleshooting.

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For me, the HUD was extremely slow when fading in and out. I solved it by installing Compiz Config and doing the following:

  1. Disabling Animations and Fading Windows
  2. Under Ubuntu Unity Plugin, setting the "Dash Blur" to "No Blur"
  3. Under Open GL, changing the texture filter to "Fast" and unchecked Framebuffer object.

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