Bug#1070150: texlive-latex-extra: performance regression under emulation with 2023.20240207-1

[Steev Klimaszewski <steev@kali.org>]

Hi Hilmar,

On Wed, May 1, 2024 at 4:17 PM Preuße, Hilmar <hille42@web.de> wrote:
>
> On 01.05.2024 22:46, Steev Klimaszewski wrote:
>
> Hi,
>
> > May 01 14:28:46 catcodes, registers, parameters,
> > May 01 14:28:46 LaTeX2e <2024-06-01> pre-release-0 (develop 2024-5-1
> > branch)
> > May 01 14:28:46 (/usr/share/texlive/texmf-dist/tex/latex/l3kernel/expl3.ltx
> > May 01 14:51:15
> > (/usr/share/texlive/texmf-dist/tex/latex/l3kernel/expl3-code.tex)) hacks, > May 01 14:51:19 document commands, control, par, spacing, files, font
> >
> >
>
> Noticed that too, that loading this file takes quite long. In Debian
> stable (on a Rasbpi4) it are just a few seconds. In a chroot (Debian
> unstable / experimental) it takes longer, but still not the 30 minutes I
> see in your log. There is no difference between pdflatex and lualatex.
>
> H,
> --
> sigfault
Correct, when run on the same host architecture, it's fine.  The issue
comes in when running on an amd64 host, and in an arm64 chroot.  So,
e.g. running an arm64 docker container on amd64, or running an arm64
systemd-nspawn container on an amd64 host.  While, yes, qemu-user
emulation is slow (single threaded iirc?) stable takes 13 minutes to
do this, testing/unstable/experimental take significantly longer as
mentioned.