Re: Emacs 28.1 built with x32 ABI outperforms x86-64

[Emanuel Berg]

Sven Hartrumpf wrote:

> With the new release of Emacs, I tried to build it with the
> x32 ABI. I succeeded for the first time (gave up with
> earlier OS versions) and it even worked without any problems
> (Ubuntu 21.10, gcc 11.2).
>
> A small benchmark ("make check" followed by reproducing all
> .elc files) outperforms the equivalent x86-64 version by 8
> %. Memory usage is almost half of x86-64, when opening files
> of several 100 MB.
>
> Limitations:
> - x32 has a hard memory limit of 4 GB.
> - To avoid building too many dependencies for x32, I used the following
>   configure line: ./configure --with-sound=no --without-dbus --without-x
> - I had to build 12 x32 versions:
>   gnutls autoconf ncurses nettle libidn2 libtasn1 p11-kit
> libgmp libtool libffi guile-2.2 gc
>   (Ask me if you need more details.)

Yes, can you post the script (or function) that carried out
the experiment?

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