TL;DW?
https://v8project.blogspot.com/2017/05/launching-ignition-an...
with a (really) brief mention of Orinoco:
https://v8project.blogspot.com/2016/04/jank-busters-part-two...
and Node + Chrome DevTools:
https://medium.com/@paul_irish/debugging-node-js-nightlies-w...
Octane benchmark retired because it benchmarks peak performance and doesn't account for other factors (e.g. startup time, memory usage). Speedometer2 coming to browserbench.org soon, benchmarks a much wider range of real-world frameworks.