GNU bug report logs - #47717
Avoid system freezes by using earlyoom (with D-Bus notifications)

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From: bo0od <bo0od <at> riseup.net>
To: Mark H Weaver <mhw <at> netris.org>, Leo Famulari <leo <at> famulari.name>
Cc: 47717 <at> debbugs.gnu.org
Subject: bug#47717: guix becomes unresponsive while building the 'vigra' package
Date: Wed, 14 Apr 2021 17:08:33 +0000

> It might help to pass --cores=2 (or perhaps even --cores=1) to
> guix-daemon, which should hopefully be honored by the build systems of
> most of our packages, but probably not all (bug reports welcome).

Thanks for the suggestion, But you know this is gonna be mouse and cat 
issue if its not fixed by default for the end user.

- No warning in the docs saying that guix not intended to be for end 
user with average pc resources (if no body willing to give solution by 
default).

- No popup telling the user your pc resources/rams (whatever) are low 
please allow the usage of substitutes for this package in order to avoid 
possible machine exhausting/freezing <- or any similar message.

...etc from similar ideas.

But leaving it to the air whenever happen it happen and user later 
discover that guix just refrigerator/freezer tool then wonder why would 
the user keep using it...

Mark H Weaver:
> bo0od <bo0od <at> riseup.net> writes:
> 
>>   > What kind of computer are you using? Are you using swap?
>>
>> 4GB DDR3 rams, i7 4th generation , 20GB for Guix about 9GB swap
> 
> For the record: I don't use binary substitutes at all, and I build my
> GNOME system plus IceCat locally, using Guix, on a modest Thinkpad X200
> with 4GB of RAM and 8GB of swap, all while running a GNOME session with
> Emacs.
> 
> I can build _most_ (but not all) packages while running IceCat.
> However, some builds, e.g. IceCat and WebKitGTK, require too much memory
> to build while simultaneously running a modern web browser.
> 
> I haven't tried to build Libreoffice recently, but I did so regularly a
> few years ago.
> 
> * * *
> 
> I suspect that your problem is that you have too many CPUs relative to
> your relatively modest 4GB of RAM.  The more CPUs you have, the more
> compilers will be run concurrently (by default), and the more RAM you
> will need.
> 
> In my case, I have only 2 CPUs on my system, so I have only two
> instances of GCC (or whatever compiler) running at any given time.
> 
> It might help to pass --cores=2 (or perhaps even --cores=1) to
> guix-daemon, which should hopefully be honored by the build systems of
> most of our packages, but probably not all (bug reports welcome).
> 
> On a Guix system, you can arrange for this in your OS config with
> something like the following (untested):
> 
> __ (modify-services %desktop-services
> ____ (guix-service-type config =>
> _______________________ (guix-configuration
> _________________________ (inherit config)
> _________________________ (extra-options '("--cores=2")))))
> 
>         Mark
> 

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