[llvm-dev] LLD: time to enable --threads by default

Joerg Sonnenberger via llvm-dev
Thu, 17 Nov 2016 01:15:00 -0000

On Wed, Nov 16, 2016 at 12:44:46PM -0800, Rui Ueyama via llvm-dev
wrote:
> I'm thinking to enable --threads by default. We now have real users,
and
> they'll be happy about the performance boost.
>
> Any concerns?

What is the total time consumped, not just the real time? When building
a large project, linking is often done in parallel with other tasks, so
wasting a lot of CPU to save a bit of real time is not necessarily a net
win.

Joerg