haberman parent
Some of the results look outdated. The Dart results look bad (25x slower than C), but looking at the code (https://github.com/dyu/ffi-overhead/tree/master/dart) it appears to be five years old. Dart has a new FFI as of Dart 2.5 (2019): https://medium.com/dartlang/announcing-dart-2-5-super-charge... I'm curious how the new FFI would fare in these benchmarks.
Because their environment is using an Ubuntu version from 8 years ago. So a better title would be "Comparing the C FFI overhead on various languages in 2014"
Same with C#, it only benchmarks an old version of mono and not .NET Core, which has received several big performance boosts in recent releases.