Why is D's GC slower than GO's?

[IGotD-]

On Saturday, 29 October 2022 at 09:42:32 UTC, Walter Bright wrote:
>
> It's literally impossible for me to stop anyone who wants to 
> improve the GC. It's all open source, and Boost licensed. It's 
> even designed to be pluggable.

No they can't because D doesn't have a built in managed pointer 
type and they are limited to a subset of GC algorithms (even 
limited among the tracing GC ones).

It is possible to use a library custom GC type but then 
runtime/phobos don't use these so replacing the GC in the entire 
program isn't possible.

Many have tried to explain this numerous times but you just 
ignore this obvious fact.