I've recently seen a video on YouTube entitled Web Browsers in Linux Suck. The guy was comparing the performance of web browsers in Windows to Ubuntu with tests from Internet Explorer 10 Test Drive.
The FishBowl test on Chrome Beta works much better if the "--ignore-gpu-blacklist" flag is set but I still get only about 60fps (with 10 and 25 fishes) and it's not smooth at all.
fernandoc1 you have to start the browser from terminal with this command:
When comparing Stage3D and WebGL in the cube demo I get half more frames per second with WebGL.
Rendering 1000 cubes
Stage3D 15fps (openGL rendering)