Why is D Slow?

[ryuukk_]

On Wednesday, 26 July 2023 at 07:44:35 UTC, Dlang Lover wrote:
> I've been reviewing most Benchmark tests lately. However, 
> system programming languages ​​such as Rust and C++ promise 
> high speed in almost every field. But I can't see that for D 
> language. For example, does it make sense for a Web Framework 
> to have such a speed issue between Rust and D? Why is there 
> such a speed difference?
>
> https://web-frameworks-benchmark.netlify.app/compare?f=vibed,axum
>
> Again, when I examine a few tests outside of the Web domain, 
> for example, in the Github repository below, D language comes 
> after C++ and Rust most of the time, but here too, DMD is slow 
> next to LDC and GDC.
>
> https://github.com/kostya/benchmarks
>
> What's behind the speed problem of the D language? What can be 
> done for this? Although I do not know much about compiler and 
> language development, if there is a solution to such problems? 
> I want to support as much as I can.

D is not slow, programmers write slow, the community need to step 
up

benchmark you linked proves it

rust: 1.545
D: 1.657

Same, as fast as rust