Re: Speed up clean meson builds by ~25%

Hi,

On Mon, 8 Apr 2024 at 11:00, Alexander Lakhin <exclusion(at)gmail(dot)com> wrote:
>
> Hello Michael,
>
> 08.04.2024 08:23, Michael Paquier wrote:
> > On Fri, Apr 05, 2024 at 06:19:20PM +0200, Jelte Fennema-Nio wrote:
> >> Agreed. While not a full solution, I think this patch is still good to
> >> address some of the pain: Waiting 10 seconds at the end of my build
> >> with only 1 of my 10 cores doing anything.
> >>
> >> So while this doesn't decrease CPU time spent it does decrease
> >> wall-clock time significantly in some cases, with afaict no downsides.
> > Well, this is also painful with ./configure. So, even if we are going
> > to move away from it at this point, we still need to support it for a
> > couple of years. It looks to me that letting the clang folks know
> > about the situation is the best way forward.
> >
>
> As I wrote in [1], I didn't observe the issue with clang-18, so maybe it
> is fixed already.
> Perhaps it's worth rechecking...
>
> [1] https://www.postgresql.org/message-id/d2bf3727-bae4-3aee-65f6-caec2c4ebaa8%40gmail.com

I had this problem on my local computer. My build times are:

gcc: 20s
clang-15: 24s
clang-16: 105s
clang-17: 111s
clang-18: 25s

--
Regards,
Nazir Bilal Yavuz
Microsoft