Six Speed

Performance of ES6 features (as implemented natively and via transpilers) relative to the ES5 baseline operations per second.

v8-perf

Notes and resources related to v8 and thus Node.js performance.

Delivering high scroll performance

To diagnose jerky scrolling in their iOS app, Facebook measures the frame rate and when it drops below a certain threshold it has a watchdog thread that sends a signal to the main thread to get a stack trace of what is resulting in slow rendering. Sample code provided.