Bootstrap Compilation Speed

[phillip . lord]

Has anyone else seen a regression in bootstrap compilation speed?

I am currently building Emacs-28 trunk. I am still on the 
bootstrap-emacs phase after half an hour or so and am getting no more 
than 2 or 3 ELC+ELN steps complete per minute, with a parallel build.

I haven't been doing bootstrap builds consistently, so I do not know if 
this has changed recently or whether I am just seeing it for the first 
time, so this is not a very consistent "bug report", rather just to see 
if anyone else is seeing something similar.

Phil