[jadbox]

As far as from my tests and what I've seen reported online, Go and Rust have a substantial lead (20% ish) over Erlang for high throughput servers.

EDIT: I believe this is partially due to Go being a lot more CPU efficient overall than Erlang (see below). So for simple servers, Go and Erlang will match performance, but for slightly more complex web servers that need to crunch some data, Go [and Rust] will outperform the Erlang VM. https://stressgrid.com/blog/benchmarking_go_vs_node_vs_elixi...

[fermuch]

I would add the detail that for both erlang and elixir, running in one core, multiple cores, or multiple machines is seamless. Clustering is easy.

[StreamBright]

Well one of the fastest HTTP library out there is rapidoid and fasthttp comes very close to it as well as actix-raw, hyper and tokio-minihttp. Erlang and Elixir is lagged behind with a non trivial margin.