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From: zimoun <zimon.toutoune@gmail.com>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 44053@debbugs.gnu.org
Subject: bug#44053: Poor profile generation performance on spinning disks
Date: Mon, 19 Oct 2020 10:18:43 +0200	[thread overview]
Message-ID: <CAJ3okZ1AMUteo3qpAHb0m6RS3ApawCrdfQwVNkDg6Xtc515LcA@mail.gmail.com> (raw)
In-Reply-To: <87zh4k435a.fsf@gmail.com>

Hi Maxim,

On Sun, 18 Oct 2020 at 05:37, Maxim Cournoyer <maxim.cournoyer@gmail.com> wrote:

> On my home machine, will is still relying on 2 x 1 TB spinning drives in
> RAID1, rebuilding my user profile, which contains 182 entries, takes on
> average about 20 minutes, even when there are no packages to be built:

The database build time seems correlated to the number of packages in
the very profile.  Well, I have not benchmarked to see if it is
linear, quadratic; or worse or better.


> --8<---------------cut here---------------start------------->8---
[...]
> building XDG MIME database...
> successfully built /gnu/store/cir84qj587i6is4akgqand7ahg9bj938-xdg-mime-database.drv
> successfully built /gnu/store/cir84qj587i6is4akgqand7ahg9bj938-xdg-mime-database.drv
> /gnu/store/j0bznlj2ibnhirijhnwpkkxzz4qfk8wb-xdg-mime-database
>
> real    1m7.344s
> user    0m1.331s
> sys     0m0.053s
> --8<---------------cut here---------------end--------------->8---

Well, it is all clear to me, but I do not know if we can do better
because these 2 XDG updates seem relying on the external binaries
"/bin/update-desktop-database" and "/bin/update-mime-database".  I
have not timed the function 'xdg-desktop-database' but all the time
should be spent on these, I bet. :-)


All the best,
simon




  parent reply	other threads:[~2020-10-19  8:20 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-18  3:35 bug#44053: Poor profile generation performance on spinning disks Maxim Cournoyer
2020-10-18 23:05 ` Luis Felipe via Bug reports for GNU Guix
2020-10-19  8:18 ` zimoun [this message]
2020-10-19 18:18   ` Maxim Cournoyer
2022-03-23 12:38 ` zimoun
2022-03-23 16:17   ` Maxim Cournoyer
2022-03-23 16:54     ` zimoun
2023-08-26 22:11 ` jbranso--- via Bug reports for GNU Guix
2023-08-27 17:59   ` Luis Felipe via Bug reports for GNU Guix
2023-08-29  9:19     ` Ludovic Courtès
2023-08-29 21:51       ` Luis Felipe via Bug reports for GNU Guix
2023-09-09 11:02         ` Ludovic Courtès

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