On 06/30/2017 12:48 AM, Grzegorz Junka wrote: > Is there any information how the hash function works? > Hashing is only used for maps with more than 32 keys. It's implemented in C here: https://github.com/erlang/otp/blob/OTP-20.0/erts/emulator/beam/utils.c#L1581 /Sverker