Re: Migrating to sourcehut - what's missing?

[Óscar Fuentes]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Óscar Fuentes <ofv@wanadoo.es> writes:
>
>> The Emacs build has several parts with no paralellization. In my humble
>> 8-thread machine most of the 4.5 minutes it takes to build (without
>> native-comp) only one thread is active, and today's CPUs are not much
>> faster than mine doing single-threaded tasks.
>
> It takes about two minutes to build Emacs on my 3.6GHz/8 core build
> machine, and about half of that is single-threaded (I did a long
> analysis of the build process on a thread here somewhere).

Double the threads plus some improvements on single-thread execution,
2 minutes sounds right.

> So getting down to 1 minute is probably feasible.

You will need many threads and a fast CPU for that :-) More so as new
barriers are made apparent as you increase the threads. Plus the machine
will often execute more than one build on parallel, or queue them.

> But convincing somebody to buy a CI server like that will probably
> remain a beautiful dream.

Yeah, only in dreams I could have enough spare money to donate a 64-core
machine to the FSF ;-)