Re: performance issue with TeX Live

[Maxim Cournoyer]

Hi,

Emmanuel Beffara <manu@beffara.org> writes:

> Hello,
>
> De Nicolas Goaziou le 13/09/2023 à 14:39:
>> Emmanuel Beffara <manu@beffara.org> writes:
>> 
>> > I am facing a severe performance issue with TeX Live: compilation of any
>> > document is an order of magnitude slower with a Guix installed system as
>> > compared to a manual installation. Is anyone confronted to this 
>> > phenomenon, or
>> > is there a way to fix this ?
>> 
>> I also experienced a noticeable slowdown; I don't know how to fix it yet.
> [...]
>> A ls-R file is generated during profile creation (see
>> `texlive-font-maps' function in "guix/profiles.scm") but it seems it is
>> not read.
>> 
>> It may be interesting to compare location and contents of the ls-R files
>> in both installations.
>
> I tried to explore this but I see no reason why the ls-R files would be
> ignored and I don't know how to explore this further. I do want to contribute
> to a solution, because right now texlive is practically unusable in Guix.

Have you tried tracing execution with strace?  Maybe try 'strace -e
file -f -s800 $texlive-cmd' and confirm whether the ls-R file gets used;
if it does, you could then introspect said file to see if it provides
what is being looked up or not.

-- 
Thanks,
Maxim