High performance JavaScript chart API for Mobile applications through HTML
Here is another High Performance Charting Library called CanvasJS
It renders over 100,000 datapoints in 100-200ms. Because it is based on Canvas, it works on most modern devices.
Below you'll find my research. Hopefully, this helps you find a solution.
Comparison of JavaScript Data Visualization Libraries specifically says that flotr2 is built for performance. It was posted on June, 2012.
Mobile friendly: Yes, built for performance and includes touch events / multi touch
Interesting features: extensible plugin framework, tuned for performance. JSON api, programmable for interactivity
RGraph: Notable solution that specifically addresses performance and mobile issues. They have a whole page breaking down how they achieve superior performance.
JSXGraph: The comparison article 13 Chart and Graph plotting javascript plugins states that "special care has been taken to optimize the performance." However, I didn't see anything on the site about mobile support.
You might want to have a look at these:
http://jsperf.com/search?q=chart
The only one I can see there that would be any use for you is flot vs. raphael, though. Of course you can always try to build on top of that and write your own tests for other libs you're interested in.
via https://stackoverflow.com/a/9900526/1085891
Unfortunately, Javascript Graphs and Charts libraries comparison does not have a performance criteria but I thought might still be helpful.
Another via r/programming: https://canvasjs.com
Extra: JavaScript Performance On Mobile Devices