Re: How long does it take to run the full rustc bootstrap chain?

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Bengt,

Bengt Richter <bokr@bokr.com> writes:

[...]

>> Building Rust is mostly CPU dependent; I think fast single thread
>> performance is key as not that much happen in parallel, IIRC.  The 3900X
>> is a 12 cores (24 logical) beast.
>>
>
> Hm, just TRAN sata, no nvme, so it's going to be slow, but
> what is the effect on what you timed?
>
> Is there an easy way to get a measure of how many GB went
> through those SATA channels during what you timed? That
> would give an idea of what faster phusical disk memory
> access would do for you. If many people are waiting longer
> that they like, maybe they would chip in to fund an upgrade,
> to feed that 12(24)-core "beast" :-)

I really doubt it's IO bound, from experience building it multiple
times.  But I don't have precise data; if you are interested in learning
more, I encourage you to run something like 'guix build --check
--no-grafts rust' or 'guix build --check --no-grafts -e '(@@ (gnu
packages rust) rust-1.55) on your machine monitor the load via atop or
similar tools.

-- 
Thanks,
Maxim