This does not mean much without the context. On the top, it is usually the libraries where most of the speed is wasted. In Java you can create HFT programms yet an average Hadoop project is 10 - 50 times slower in terms of latency for a specific operation. It is not a problem with the JVM of Java as a language as much it is a problem with code quality in user libraries.

I don’t think dotnet is faster than rust or anything overall, but ASP.NET Core is 6th is the techempower composite rankings and first or second I believe in the plain text benchmark. This is excluding the large amount of performance work that has gone into the soon to be released .NET 5.

dotnet and Rust are essentially neck and neck on plain text. On any benchmark that actually does work though, dotnet is nowhere to be found (less than half the performance of actix).

Yea, actix is definitely faster than ASP.NET Core and in many benchmarks it is 2x performance wise. My only point really was that ASP.NET core offers better performance compared to almost any other widely used web framework out there. Additionally, performance improvements have and continue to be a focus, with steady progress to show for it.

Speed is also a reason not to use it, as programming and compilation are relatively slow in it.