Buildworld and buildkernel with very slow compilation, recently

[Chris Nehren]

On Sunday, June 21, 2020 8:11:15 AM EDT Michael Grimm wrote:
> Hi,
> 
> I am following FreeBSD 12.1-STABLE.
> 
> Clang has been upgraded to version 10.0.0 on May, 1st, and ever since that
> time, I do observe a dramatic increase in compilation times of building
> world, kernel and ports. I didn't benchmark the exact times, but
> compilation times are at least increased by a factor of 1.5. Nothing has
> changed of the last month besides upgrading 12.1-Stable every other week.
> 
> Has anyone else been bitten by this?

I don't have measurements to corroborate this, but here's a mailing list 
thread where folks are talking about it (split across two URLs, the OP posted 
in April and then there was a followup in May):

http://lists.llvm.org/pipermail/llvm-dev/2020-April/140938.html 
https://lists.llvm.org/pipermail/llvm-dev/2020-May/141482.html 

So there definitely seems to be *something* going on, and you are indeed not 
crazy. :)