Performance

Performance on a selection of python benchmarks, normalized to that of a native python interpreter. Smaller numbers are better.

Normalize to:   

With JIT:   

Average performance across javascript engines and across python benchmarks is:

X times slower than cpython

Startup Overhead

Overhead involved in downloading the core interpreter files and loading them up into a running VM. Smaller numbers are better.

With JIT:   

JS-Bridge Overhead

Performance on a selection of js-bridge benchmarks, with runtime of python implementation normalized to that of equivalent native javascript. Smaller numbers are better.

With JIT:   

Average performance across javascript engines and across js-bridge benchmarks is:

X times slower than native js