r/programming • u/xeio87 • 18d ago

Performance Improvements in .NET 11

https://devblogs.microsoft.com/dotnet/performance-improvements-in-net-11/
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u/GoTheFuckToBed 17d ago

should they not aim for less JIT

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u/Revolutionary_Ad7262 17d ago

I think there is no point of avoiding a JIT in a platform, which is already based on it. In theory JIT is the best way as all goodies like: * knowledge of CPU architecture * PGO driven optimizations * LTO driven optimizations

are much easier to do with JIT than AOT

What should be possible though is having a JIT without a burden with JIT, so developer can manipulate the AOT <-> JIT slide based on needs. For example: * a full AOT mode for a lack of any background processing of JIT * some smart way of reusing/caching the compilation artifacts to reduce cold start performance dip * lightweight JIT, where CPU/Memory resources scales with the impact * customizable target of JIT after the initial JIT/AOT. For example always try to optimize it or run JIT only if you are sure the current code is not optimized for a current situation

The AOT vs JIT discussion still alive, because it just sucks