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Date: Fri, 23 Mar 2001 19:58:58 +0100
From: Martin Dalecki <dalecki@evision-ventures.com>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: "James A. Sutherland" <jas88@cam.ac.uk>,
        Guest section DW <dwguest@win.tue.nl>,
        Rik van Riel <riel@conectiva.com.br>,
        "Patrick O'Rourke" <orourke@missioncriticallinux.com>,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Prevent OOM from killing init
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I have a constructive proposal:

It would make much sense to make the oom killer
leave not just root processes alone but processes belonging to a UID
lower
then a certain value as well (500). This would be:

1. Easly managable by the admin. Just let oracle/www and analogous users
   have a UID lower then let's say 500.

2. In full compliance with the port trick done by TCP/IP (ports < 1024
vers other)

3. It wouldn't need any addition of new interface (no jebanoje gawno in
/proc in addition()

4. Really simple to implement/document understand.

5. Be the same way as Solaris does similiar things.

...


Damn: I will let my chess club alone toady and will just code it down
NOW.

Spec:

1. Processes with a UID < 100 are immune to OOM killers.
2. Processes with a UID >= 100 && < 500 are hard for the OOM killer to
take on.
3. Processes with a UID >= 500 are easy targets.

Let me introduce a new terminology in full analogy to "fire walls"
routers and therabouts:

Processes of category 1. are called captains (oficerzy)
Processes of category 2. are called corporals (porucznicy)
Processes of category 2. are called privates (?o?nierze)

;-)
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