From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#38167: guix pull takes over 8 GiB of memory to finish if there
 are no substitutes
Date: Mon, 11 Nov 2019 21:42:24 +0100
Message-ID: <878somno0f.fsf@gnu.org>
References: <20191111080635.14f7b39a@scratchpost.org>
 <87eeyec18l.fsf@cbaines.net>
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In-Reply-To: <87eeyec18l.fsf@cbaines.net> (Christopher Baines's message of
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To: Christopher Baines <mail@cbaines.net>
Cc: 38167@debbugs.gnu.org

Hi Chris & Danny,

Christopher Baines <mail@cbaines.net> skribis:

> Danny Milosavljevic <dannym@scratchpost.org> writes:
>
>> Hi,
>>
>> guix pull takes over 8 GiB of memory to finish if there are no substitut=
es.
>>
>> My laptop only takes max 8 GiB of RAM.  I've set up swap, but that kind =
of
>> memory usage still seems ridiculous.
>
> Do you know if the derivations got built in parallel? So, does guix pull
> --max-jobs=3D1 use the same amount of memory?

Also, it would be great if you could identify which derivation build
requires that much memory, if this was happening sequentially.  (I
suspect =E2=80=9Cguix-packages.drv=E2=80=9D is the one that eats up the mos=
t memory.)

I agree it=E2=80=99s ridiculous.  That memory usage comes from Guile=E2=80=
=99s
compiler.  A couple of years ago, Andy managed to cut memory usage
somewhat, but that=E2=80=99s not enough.

Thanks,
Ludo=E2=80=99.