Java Virtual Machine Garbage Collection and Its Performance Impact

• ixy-languages

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  A high-speed network driver written in C, Rust, C++, Go, C#, Java, OCaml, Haskell, Swift, Javascript, and Python

  

  Secondly, this chart shows that Java compares quite favorably to practically all other managed languages, and OCaml as well. The point being you can go quite a ways without explicit stack allocation. Java is used in HFT and other low latency applications (although the writing style is different from your normal Java app), so it's possible to write very high performant code with it. Valhalla will only push the boundaries further.

• valhalla

  3 345 10.0 Java

  https://openjdk.java.net/projects/valhalla (by openjdk)

  

  Repo: https://github.com/openjdk/valhalla

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• .NET Runtime

  223 9,420 10.0 C#

  .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

  

  It is in certain cases. Not all optimizations can be done at runtime, otherwise you wouldn't have the CLR folks for example workin on implementing devirtualization (https://github.com/dotnet/runtime/issues/7541), which the JVM is very good at. Or things like dynamic inlining which enables enabling and disabling JFR "for free". Here are some good talks

• cats

  14 4,711 9.7 Scala

  Lightweight, modular, and extensible library for functional programming.

  

  Example of how it makes life worse

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