all messages for Guix-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: zimoun <zimon.toutoune@gmail.com>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>,
	Luis Felipe <luis.felipe.la@protonmail.com>,
	44053@debbugs.gnu.org,
	Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: Re: bug#44053: ‘xdg-mime-database’ profile hook is slow
Date: Wed, 04 Nov 2020 00:32:39 +0100	[thread overview]
Message-ID: <86blgeggo8.fsf@gmail.com> (raw)
In-Reply-To: <87ft5rncn5.fsf@gnu.org>

Hi,

>   https://git.savannah.gnu.org/cgit/guix.git/commit/?id=76ea70bd70aeb76570445c11cea2f98139192b54

Clever workaround!  What are now the performances on previous examples
(same profiles and same packages)?


> Unfortunately, AIUI,
>
>   update-mime-database(X ∪ Y) ≠ update-mime-database(X) ∪ update-mime-database(Y)

Hum?  Interesting… well weird!  If it is not a “morphism” then it is not
really an updater.  Anyway.

I am curious about the comparison:

   time(update-mime-database(X ∪ Y))
vs
   time(update-mime-database(X)) + time(update-mime-database(Y))
vs
   time(update-mime-database(X ∩ Y))


> So it would seem we cannot simply used the pre-built database from
> ‘shared-mime-info’ and merge it with that of the other packages, at
> least not without changing ‘update-mime-database’ or re-implementing
> parts of it on our side.

’shared-mime-info’ is simply a package, right?  So what does it means:
«Find a way to avoid reprocessing 'shared-mime-info'» in:

--8<---------------cut here---------------start------------->8---
                 ;; the database.  TODO: Find a way to avoid reprocessing
                 ;; 'shared-mime-info', which is the most expensive one.
[...]
                 (invoke #+(file-append shared-mime-info
                                        "/bin/update-mime-database")
                         destdir)))))))
--8<---------------cut here---------------end--------------->8---

?  Well, I miss why and how ’shared-mime-info’ could be the culprit here
or what could be improved with “shared-mime-info”?  Maybe replace the
“lazy reference” by a strict one if it makes sense.


All the best,
simon


  parent reply	other threads:[~2020-11-03 23:33 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12 12:59 Removing/replacing “Guix in action” video from the home page? Ludovic Courtès
2020-10-12 14:31 ` Luis Felipe
2020-10-13  1:17   ` Joshua Branson
2020-10-13 17:19     ` Bonface M. K.
2020-10-13 20:59       ` Joshua Branson
2020-10-14  0:58         ` Bonface M. K.
2020-10-13 20:39   ` Ludovic Courtès
2020-10-14  0:14     ` Luis Felipe
2020-10-14 20:43       ` Joshua Branson
2020-10-16 10:27         ` Ludovic Courtès
2020-10-16 10:36           ` zimoun
2020-10-16 15:26             ` Luis Felipe
2020-10-18  3:42               ` Maxim Cournoyer
2020-10-18 11:13                 ` zimoun
2020-10-18 20:55                   ` Joshua Branson
2020-10-21  9:49                     ` ‘xdg-mime-database’ profile hook is slow Ludovic Courtès
2020-10-21 10:23                       ` zimoun
2020-10-27 23:14                       ` bug#44053: " Joshua Branson via Bug reports for GNU Guix
2020-10-27 23:14                         ` Joshua Branson
2020-10-28 21:48                         ` Luis Felipe
2020-10-28 22:38                           ` zimoun
2020-10-29 12:35                             ` Luis Felipe
2020-11-02 11:12                         ` bug#44053: " Ludovic Courtès
2020-11-02 12:53                           ` Ludovic Courtès
2020-11-02 14:04                             ` Ludovic Courtès
2020-11-03 23:32                             ` zimoun [this message]
2020-11-05 14:47                               ` Luis Felipe
2020-11-05 16:10                                 ` zimoun
2020-11-05 17:59                                   ` Luis Felipe
2020-11-06 12:55                                     ` zimoun
2020-11-06  9:10                                 ` Ludovic Courtès
2020-11-06 13:57                                   ` Luis Felipe
2020-11-08 16:31                                     ` Ludovic Courtès
2020-11-06  9:12                               ` Ludovic Courtès
2020-10-16 20:00             ` Removing/replacing “Guix in action” video from the home page? jbranso
2020-10-16 21:04               ` Luis Felipe
2020-10-28  0:55                 ` Joshua Branson
2020-10-28 12:59                   ` Tobias Geerinckx-Rice
2020-10-28 21:46                   ` jbranso
2020-10-31 21:56                     ` Ludovic Courtès
2020-11-01  0:50                     ` jbranso
2020-11-03 22:30                       ` zimoun
2020-10-16 19:57           ` jbranso

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=86blgeggo8.fsf@gmail.com \
    --to=zimon.toutoune@gmail.com \
    --cc=44053@debbugs.gnu.org \
    --cc=guix-devel@gnu.org \
    --cc=ludo@gnu.org \
    --cc=luis.felipe.la@protonmail.com \
    --cc=maxim.cournoyer@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/guix.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.