I have a little application with charts. I was using jqplot but IMHO it was too heavy and I started googling for a lighter solution. I found flot. flot is based on canvas and has user interaction. I don't know how it is implemented (btw flot is mit licensed) but it works. it's a shame that this library doesn't support user interaction
As many of you pointed out, the problem are bootstrap's updates. Maybe a script that removes .border-radius and converts #gradient in plain color is better
iPhone 5 - 7.0.6 - Safari: 144036 ms
Motorola Moto G - 4.4.2 XT1032 - Chrome 33: 157173 ms
Nexus 4 - 4.4.2 - Chrome 34: 169032 ms
Nexus 4 - 4.4.2 - Opera 20: 163980 ms
Nexus 3 - 4.3 - Chrome 33: 175682 ms
Nexus 4 - 4.4.2 - Firefox 28: 262957 ms
Nexus 4 - 4.4.2 - Opera Classic 12.1: I gave up :)