December 15, 2020

Debugging Elixir/Erlang Compiler Performance

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Debugging Elixir/Erlang Compiler Performance

Source: dashbit.co

José Valim addresses an issue regarding slow compilation of Gettext modules in Erlang/OTP 23. He details his debugging process and describes three pull requests made to the Erlang/OTP repository aimed at improving compiler performance. Valim explains the steps to isolate slow files and analyze their compilation times. He dives into specific optimizations, including skipping unnecessary traversals of literals and precomputing values in the Erlang compiler. Valim also highlights the role of JIT support in Erlang/OTP master in achieving performance gains.

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