Re: Skipping unexec via a big .elc file

[Stefan Monnier]

> * Garbage collection time.  If we’re not trying to dump out as compact as
> possible an image, squeezing out every byte is less important.  Drop all of
> the explicit calls in loadup.el.  Consider raising gc-cons-threshold to the
> point where it doesn’t trigger during loadup; maybe set it back after
> startup completes, or the first time Emacs is idle more
> than a couple seconds.

The patch to which I was referring (and which I used) does get rid of
most gc calls.

> As I recall, I had startup times under a second without any loadup/dump
> preprocessing with these changes.  (And all the “purecopy” stuff skipped,
> in a CANNOT_DUMP build.)

The patch also skips the purecopy by setting purify-flag to nil.

> Did you check whether actually byte compiling the written file made
> a difference?

dumped.elc has no code to compile.


        Stefan