Today I Learned

A Hashrocket project

Current number of atoms in the atoms table

In Elixir and Erlang there is a hard limit on the number of atoms you can create. Atoms are not garbage collected so its important to ensure you don’t exceed the limit. You can check what the limit is with:

> :erlang.system_info(:atom_limit)
1048576

Likewise, you can check the current number of atoms in the atoms table with:

> :erlang.system_info(:atom_count)
9654

On my system using Elixir 1.5.1 I use 9654 atoms just to start iex.

Looking for help? Elixir is quickly gaining momentum for web applications that need concurrency, performance, and the ability to connect to many different clients. The developers at Hashrocket are learning along with the rest of the development community that Elixir and Phoenix are viable Rails alternatives for the right application. Check out the source code for Today I Learned, written in Elixir, and contact us if you need help with your Elixir project.