Re: MPS: optimized build

[Andrea Corallo <acorallo@gnu.org>]

Helmut Eller <eller.helmut@gmail.com> writes:

> On Sun, May 05 2024, Andrea Corallo wrote:
>
>> [1] <https://elpa.gnu.org/packages/elisp-benchmarks.html>
>
> I ran those with:

Thanks!

>   emacs -Q -batch
>    -l ~/.emacs.d/elpa/elisp-benchmarks-1.14/elisp-benchmarks.el
>    -eval '(elisp-benchmarks-run nil nil 1)' 2>&1 |tee /tmp/mps-result.txt
>
> the results are below.
>
> I had to disable the pidigits program because the MPS version ate all
> memory and began to swap.  There's probably something wrong with
> bignums.

That's a pity, AFAIR pidigits was the one heavy on GC.

> For most programs the two versions are relatively close, except for
> nbody where the old GC does much better.  The nbody program seems to
> involve floating point arithmetic.  Maybe there's something wrong with
> floats too.  Or maybe the extra header costs so much.

Few others shows a noticeable performance slowdown, (assuming it's not
just noise of course).  There time to look into what's really going on
tho :)

Thanks

  Andrea