What is the performance difference between native and bytecode Erlang modules?
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What is the performance difference between native and bytecode Erlang modules?
For code that actually does a lot of work (as opposed to spending most of its time waiting for messages or calling built-in functions), typical speedups would be between 8 and 20 times.
This also depends a lot on exactly what the code does: loops over floating point operations or manipulation of binaries/bitstrings tend to get the best speedups, while more normal tuple-and-list-manipulating code might not get more than 8-10 times faster.
Also, keep in mind that a loop compiled to native code will not be much faster if the loop body is mainly calling other modules that are not compiled to native.
(It’s been a while since I looked at fresh benchmark results, but I don’t think a lot has changed.)