Elixir single thread performance /is/ much faster than Ruby and Python [1].
Are you sure you weren't just doing something sub-optimal with Ecto?
[1] https://amp.reddit.com/r/elixir/comments/46v1l1/is_elixir_fa...
Are you sure you weren't just doing something sub-optimal with Ecto?
[1] https://amp.reddit.com/r/elixir/comments/46v1l1/is_elixir_fa...
One specific case that cripples Elixir - is as far as I know Elixir can't handle large multiplications efficiently. Ruby, Python use karatsuba or some derivative - from what I can tell multiplication in Erlang doesn't. Though I haven't actually asked anyone and was just poking around on my own.
example: Multiplying the first 100_000 numbers together I get
ruby multi.rb 3.47s user 1.91s system 99% cpu 5.396 total
elixir multi.exs 14.32s user 0.62s system 103% cpu 14.441 total
This shows a significantly different story between the two with at least similar code. Note I am not trying to optimize for the fastest factorial here as both can be made much quicker but roughly equivalent code seems to tell a different story for me.
(NOTE: I put the code in a module as iex interpreted expressions on the top level are always slower than compiled modules, even when pasting them into iex. Doing the same for Ruby didn't show any difference for me.)