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bug#44053: ‘xdg-mime-database’ profile hook is slow
From: |
zimoun |
Subject: |
bug#44053: ‘xdg-mime-database’ profile hook is slow |
Date: |
Thu, 05 Nov 2020 17:10:39 +0100 |
Hi,
On Thu, 05 Nov 2020 at 14:47, Luis Felipe <luis.felipe.la@protonmail.com> wrote:
>> Clever workaround! What are now the performances on previous examples
>> (same profiles and same packages)?
>
> In my case there seem to be no improvement (using Guix
> 5e7cf66fb35780f930ad0bc5fe21ac330df4411d).
>
>
> $ time guix package -i perl --max-jobs=1
[...]
> real 8m38,121s
> user 0m2,742s
> sys 0m0,338s
Thanks. But it is hard to conclude because the previous timing is
missing. The right experiment should be:
--8<---------------cut here---------------start------------->8---
old=c73496f433044a76003b33c3855bb35ecd0df87f
new=5e7cf66fb35780f930ad0bc5fe21ac330df4411d
guix time-machine --commit=$old -- help
guix time-machine --commit=$new -- help
drv=$(guix gc -R $(guix gc --derivers $(readlink -f ~/.guix-profile)) |grep
xdg-mime-database.drv)
guix package -I |wc -l
time guix time-machine --commit=$old -- build --check $drv
time guix time-machine --commit=$new -- build --check $drv
--8<---------------cut here---------------end--------------->8---
And personally, I get:
18
Updating channel 'guix' from Git repository at
'https://git.savannah.gnu.org/git/guix.git'...
The following profile hook will be built:
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
building XDG MIME database...
successfully built
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
/gnu/store/hrcj1h0hl9f6hm1akh682zj1mhpwbx4c-xdg-mime-database
real 0m8.063s
user 0m6.226s
sys 0m0.282s
Updating channel 'guix' from Git repository at
'https://git.savannah.gnu.org/git/guix.git'...
The following profile hook will be built:
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
building XDG MIME database...
successfully built
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
/gnu/store/hrcj1h0hl9f6hm1akh682zj1mhpwbx4c-xdg-mime-database
real 0m8.016s
user 0m6.223s
sys 0m0.243s
Well, I have only 18 packages in my ~/.guix-profile. That’s why the
difference is not visible and the “time-machine” is totally dominating
here.
All the best,
simon