Why is Scala so much slower than JavaScript/Node at running iterations?

This page summarizes the projects mentioned and recommended in the original post on /r/scala
Performance analysis Openjdk Scala Benchmark

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  • JMH

    "Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness)

    • Take a look at sbt-jhm for doing benchmarks. Java in particular is hard to measure because of optimizations that happen at run-time. jhm runs multiple iterations and gives tools to ensure that function calls and loops that may be optimized away are kept around and tested. You may also find some cases that are faster in node.js because the Javascript V8 engine is highly optimized.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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