From: Mark Kettenis <mark.kettenis@xs4all.nl>
Subject: Re: timing lld --threads for fun and profit
To: Martin Pieuchot <mpi@grenadille.net>
Cc: landry@openbsd.org, robert@openbsd.org, tech@openbsd.org
Date: Fri, 08 Nov 2024 13:42:52 +0100

> Date: Fri, 8 Nov 2024 13:26:00 +0100
> From: Martin Pieuchot <mpi@grenadille.net>
> 
> On 08/11/24(Fri) 12:22, Landry Breuil wrote:
> > [...] 
> > someone(tm) should look into patching lld to avoid using more than
> > MAX(ncpu,5) threads ? In the meantime, i'll probably fix the firefox
> > ports to avoir using MAKE_JOBS for lld but cap it at 5.
> 
> Recent lld(1) include the following commits which limit the value to
> 16 by default instead of the number of available CPUs.
> 
> See the following commits:
> 
> https://github.com/llvm/llvm-project/commit/a8788de1c3f3c8c3a591bd3aae2acee1b43b229a
> https://github.com/llvm/llvm-project/commit/da68d2164efcc1f5e57f090e2ae2219056b120a0
> 
> Robert do you see the same with chromium?  Would it make sense to
> backport these diff with a smaller value for OpenBSD?

Looks like that is part of llvm 17 already?  So the pending update
would give us that code (and then we can tweak it if necessary).