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Wed, 13 Jul 2022 17:21:51 +0000 (UTC) Date: Wed, 13 Jul 2022 19:21:45 +0200 From: Julien Lepiller User-Agent: K-9 Mail for Android In-Reply-To: <87lesx7xsx.fsf@riseup.net> References: <20200227210601.20011001@scratchpost.org> <877d4h159j.fsf@gmail.com> <87lesx7xsx.fsf@riseup.net> Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=----XA2CGGQ6E3W8UVTKZPZ9GYXZ1RD8SP Content-Transfer-Encoding: 7bit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1657732943; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:resent-cc: resent-from:resent-sender:resent-message-id:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; 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spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: 7.56 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=lepiller.eu header.s=dkim header.b=mwNPKJGe; dmarc=fail reason="SPF not aligned (relaxed)" header.from=lepiller.eu (policy=none); spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 78AAF30ED2 X-Spam-Score: 7.56 X-Migadu-Scanner: scn1.migadu.com X-TUID: KvGwVp8517Ra ------XA2CGGQ6E3W8UVTKZPZ9GYXZ1RD8SP Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I've heard that theory before=2E From observation on my late armhf server (= two cores): - it takes just below 2GB to build one of the derivations - It doesn't swap a single byte - whether with two or a single core, it takes roughly the same amount of m= emory - substitution is nice, it doesn't require lots of memory (and then --core= s is useless) I think it's because we load all the files in a batch before we build them= =2E The biggest amount of memory required is not for running the compiler o= n a thread, but for loading files and keeping them in memory for the whole = duration of the build=2E With more threads, we still don't load each file m= ore than once (twice to build it), so there's no reason it should take more= memory=2E Or maybe the process of loading and building is inherently single-threaded= ? I don't think so, but maybe? Or it doesn't honor --cores=2E Le 13 juillet 2022 18:58:58 GMT+02:00, Csepp a = =C3=A9crit=C2=A0: > >Maxim Cournoyer writes: > >> Hi Danny, >> >> Danny Milosavljevic writes: >> >>> Hi, >>> >>> I just got a report that with Guix in a virtual Machine (like describe= d in the >>> manual in 8=2E16), guix pull does not actually work[1] with 1 GB of RA= M=2E >>> It does work fine with 4 GB of RAM=2E >> >> I don't see any reference of 1 GiB being enough in our current version >> of the manual=2E If you do, please let me know=2E >> >> Closing for now=2E >> >> Thanks, >> >> Maxim > >I think it's enough if you only use a single core=2E >If any guix operations goes out of memory, add --cores=3D1=2E >So: guix pull --cores=3D1 > > > ------XA2CGGQ6E3W8UVTKZPZ9GYXZ1RD8SP Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable I've heard that theory before=2E From observation = on my late armhf server (two cores):

- it takes just below 2GB to bu= ild one of the derivations
- It doesn't swap a single byte
- whether = with two or a single core, it takes roughly the same amount of memory
- = substitution is nice, it doesn't require lots of memory (and then --cores i= s useless)

I think it's because we load all the files in a batch bef= ore we build them=2E The biggest amount of memory required is not for runni= ng the compiler on a thread, but for loading files and keeping them in memo= ry for the whole duration of the build=2E With more threads, we still don't= load each file more than once (twice to build it), so there's no reason it= should take more memory=2E

Or maybe the process of loading and buil= ding is inherently single-threaded? I don't think so, but maybe?

Or = it doesn't honor --cores=2E

Le 13 juillet= 2022 18:58:58 GMT+02:00, Csepp <raingloom@riseup=2Enet> a =C3=A9crit= =C2=A0:

Maxim Cournoyer <maxim=2Ecournoy=
er@gmail=2Ecom> writes:

 Hi Danny,

 Danny Milosavljevic <dannym@scratchpost=2Eo=
rg> writes:

 Hi,=


 I just got a report that with Guix in a virtual Machine (like desc=
ribed in the
 manual in 8=2E16), guix pull does not actually work[1] wit=
h 1 GB of RAM=2E
 It does work fine with 4 GB of RAM=2E
=

 I don't see any reference of 1 GiB being enough in our current version=

 of the manual=2E  If you do, please let me know=2E

 Closing for=
 now=2E

 Thanks,

 Maxim

I think it's enou=
gh if you only use a single core=2E
If any guix operations goes out of m=
emory, add --cores=3D1=2E
So: guix pull --cores=3D1



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