GNU bug report logs - #78194
`guix pull --list-generations' is extremely slow

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Package: guix;

Reported by: Ian Eure <ian <at> retrospec.tv>

Date: Thu, 1 May 2025 15:36:02 UTC

Severity: normal

Done: Andreas Enge <andreas <at> enge.fr>

Bug is archived. No further changes may be made.

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Message #11 received at 78194 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> chbouib.org>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 78194 <at> debbugs.gnu.org, Ian Eure <ian <at> retrospec.tv>
Subject: Re: bug#78194: `guix pull --list-generations' is extremely slow
Date: Wed, 14 May 2025 22:28:37 +0200

Ludovic Courtès <ludo <at> gnu.org> writes:

> Because for each pair of generations, it shows the corresponding news
> entries (as per ‘guix pull --news’), and that part is quite expensive
> because it involves a Git log traversal.
>
> I think we should (1) optimize the news code (that’s
> ‘channel-news-for-commit’), and (2) if that’s not enough consider
> keeping it off by default in ‘guix pull --list-generations’.

That turned out to be easier than I thought, see
<https://issues.guix.gnu.org/78432>, which makes it 10–20x faster.

Ludo’.
This bug report was last modified 34 days ago.

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