Re: Guile's time execution issues

[Aleix Conchillo Flaqué]

On Sat, May 2, 2020 at 7:11 AM Ludovic Courtès <address@hidden> wrote:

> Hola!
>
>
Hola!

So weird I'm getting different numbers on 2.2.7. Not sure how I'm getting
those initial ~20s and you are getting consistent ~ 45s. It shouldn't have
nothing to do with it, but could it be I'm running it on macOS?

Now, it would be good to profile ‘json->scm’ to see if there’s anything
> that could be improved on the Guile side, or if it’s just a normal
> profile for GC-intensive code.
>
>
Good news is that I have been working on performance improvements and
json->scm is going down from my ~19 seconds to ~3 seconds on the same
sample file. Linus Björnstam was the one to bring up performance issues so
we've been back and forth trying to make it fast.

One thing I found is that `match` is slow. The code looked nicer but had to
change it back to lets and conds as the performance increase was ~2 seconds.

Thanks for looking into this,

Aleix