GNU bug report logs - #44175
[optimization] Grafting is too slow

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Message #17 received at 44175 <at> debbugs.gnu.org (full text, mbox):

From: Lars-Dominik Braun <ldb <at> leibniz-psychology.org>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 44175 <at> debbugs.gnu.org, Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: Re: bug#44175: [optimization] Grafting is too slow
Date: Mon, 26 Oct 2020 08:56:34 +0100

[Message part 1 (text/plain, inline)]

Hi,

> Yes, you’re right of course.  But I think in the example above Lars was
> reporting the run time of the ‘guix’ command when the graft itself is
> already built.  Just the extra code to compute the graft derivation (not
> actually building them) leads to x2 wall-clock time or so.
yes, Ludo is right. The numbers I reported are with grafts already built, warm caches and
local socket communication. So we’re only seeing the CPU-bound computation
here. Sorry for the confusion. I should have been more specific in the other
issue.

Cheers,
Lars

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