Looking at the c ffi improvements posted, I thought I'd check if there were improvements.

Time in ms to call a c function 2 billion times (lesser is better).

95536 - go 1.1.2

130105 - go 1.8.0

It is a rather crude example:

// plusone is the ffi

int x = 0;

while (x < 2000000000) x = plusone(x);

Here's the source https://github.com/dyu/ffi-overhead

With other programming languages:

c:

4778

nim:

4746

rust:

5331

java7:

17922

java8:

17992

go:

130105

(edited for formatting)