Re: Accept GUILE 2 without extra configure options (issue 569390043 by address@hidden)

[Han-Wen Nienhuys]

On Fri, Feb 21, 2020 at 6:13 PM <address@hidden> wrote:

> > 1.8:
> > real  3m41.714s
> > user  6m52.414s
> > sys   0m36.662s
> >
> > 2.2:
> > real  6m8.344s
> > user  12m51.799s
> > sys   0m34.875s
> >
> > I think this warrants some deeper look, though: I have the impression
> that the
> > lilypond-book regression tests aren't parallelized. They also suffer
> from the
> > higher start up costs (there are some 60 of them, so that's 90 seconds
> right
> > there).
>
> I recently found some "could not contact jobserver" in the logs from
> make and googling it suggested that this is a consequence of using
> $(MAKE) rather than $$(MAKE) inside of macros (causing premature or too
> much expansion?).  I have not investigated yet and don't know what
> counts as "macro" here.  Or whether this is all nonsense.  Either way,
> it should affect Guile-2 just as much as Guile-1.8, shouldn't it?

The startup costs of parsing .scm files of 1.5 secs gets added to the
process 60 times. If you remove that,

>>> (368 - 90)  /221.
1.257918552036199

we're back to a 25% slowdown.


>
> https://codereview.appspot.com/569390043/



-- 
Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen