[gentoo-user] Per-process-tree memory quotas?

[gentoo-user] Per-process-tree memory quotas?

[Alan Grimes]

Hey, guys I'm having trouble here. =\


1. I have a stupifyingly vast amount of memory (32GB)
2. I'm hitting swap with nothing but a few browser windows with maybe a
dozen tabs each, libreoffice, and maybe 6 console windows. I should not
be using more than 2.5gb ram right now but I'm using 14.6gb, not
counting cache.


The two major culprits are the web browsers, seamonkey and Chromium...
They are absolutely out of control preventing me from running more
interesting applications on my machine. I have one code that does number
theory but it needs 25gb of ram to run, I can't run it now with these
goddamned web browsers eating ram like it's free. I would like to
establish hard memory quotas for the entire process tree of each of them
to 2.5gb.

How do I do this?


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Re: [gentoo-user] Per-process-tree memory quotas?

[Andrew Udvare]

> On 2018-10-19, at 23:24, Alan Grimes <ALONZOTG@verizon.net> wrote:
> 
> How do I do this?

Cgroups were sort of invented for this reason. Yes it requires Systemd.

https://wiki.archlinux.org/index.php/cgroups

I too have 32 GiB of RAM and I'm curious how Chromium acts under a constrained environment, or what limits can be placed especially on the CPU. In my experience using Chrome inside VMs, it acts very poorly.

-- 
Andrew

Re: [gentoo-user] Per-process-tree memory quotas?

[Mick]

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On Saturday, 20 October 2018 05:13:13 BST Andrew Udvare wrote:
> > On 2018-10-19, at 23:24, Alan Grimes <ALONZOTG@verizon.net> wrote:
> > 
> > How do I do this?
> 
> Cgroups were sort of invented for this reason. Yes it requires Systemd.

No, I don't think systemd is obligatory, although it may be for archlinux?


> https://wiki.archlinux.org/index.php/cgroups
> 
> I too have 32 GiB of RAM and I'm curious how Chromium acts under a
> constrained environment, or what limits can be placed especially on the
> CPU. In my experience using Chrome inside VMs, it acts very poorly.

Have a look here instead for the Gentoo alternative:

https://wiki.gentoo.org/wiki/OpenRC/CGroups

-- 
Regards,
Mick

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Re: [gentoo-user] Per-process-tree memory quotas?

[Håkon Alstadheim]

Den 20. okt. 2018 11:08, skrev Mick:
> On Saturday, 20 October 2018 05:13:13 BST Andrew Udvare wrote:
>>> On 2018-10-19, at 23:24, Alan Grimes <ALONZOTG@verizon.net> wrote:
>>>
>>> How do I do this?
>> Cgroups were sort of invented for this reason. Yes it requires Systemd.
> No, I don't think systemd is obligatory, although it may be for archlinux?
>
>
>> https://wiki.archlinux.org/index.php/cgroups
>>
>> I too have 32 GiB of RAM and I'm curious how Chromium acts under a
>> constrained environment, or what limits can be placed especially on the
>> CPU. In my experience using Chrome inside VMs, it acts very poorly.
> Have a look here instead for the Gentoo alternative:
>
> https://wiki.gentoo.org/wiki/OpenRC/CGroups
>
"support for userlevel cgroups" is on the list of possible improvements
there. This means some reading and manual setup to limit your browser
processes. Definitely doable though.
Start with turning on CGroups in /etc/rc.conf, and take it from there.