bug#43269: 28.0.50; [feature/native-comp] provide a user feedback on Emacs being native compiled

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: rms@gnu.org,  arthur.miller@live.com,  43269@debbugs.gnu.org
> Date: Wed, 09 Sep 2020 18:15:51 +0000
> 
> > So what do you have there, an i9 CPU?  In any case, 4 min with -j16 is
> > quite a lot.
> 
> It's Xeon from three yeas ago (8 real cores).  It's 4 mins because our
> build is not very parallel.
> 
> But that said I think what matters it the total CPU time (here ~30min)
> to be compared against the same for the vanilla build (~12min).  This is
> about what one would get at -j1.

No, what matters to users is the elapsed time.  And that cannot be
simply estimated as the total CPU time.

Anyway, thanks for the data (and all your hard work on this).