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From: Bernd Eckenfels <ecki-news2002-06@lina.inka.de>
To: linux-kernel@vger.kernel.org
Subject: Re: Very large font size crashing X Font Server and Grounding Server to a Halt
Date: Fri, 14 Jun 2002 00:33:54 +0200	[thread overview]
Message-ID: <E17IdAA-0001aJ-00@sites.inka.de> (raw)
In-Reply-To: <Pine.LNX.4.44.0206132128570.4999-100000@server3.jumpleads.com>

In article <Pine.LNX.4.44.0206132128570.4999-100000@server3.jumpleads.com> you wrote:
> It has always puzzled me that a process using lots of memory can bring 
> down an entire (otherwise relatively idle) server to the extent that one 
> cannot even get mingetty on a local terminal to respond to keypresses. I 
> can confirm that the described situation is not just a one-off.

Well, with crrent versions you have to have 2 or 3 of them to realy make a
server trtash. Something like:

tail /dev/zero 

recovers with the oom killer

tail /dev/zero & tail /dev/zero & tail /dev/zero

will most likely trash for minutes.

Some kind of penalty could be introduced, because this is better to set up
than ulimit. On a system with large amounts of users you simply cant set the
ulimit of a single user to mainram/concurrent-users or
mainram/concurrent-evil-users.

Greetings
Bernd

  reply	other threads:[~2002-06-13 22:33 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20020610102006.A6947@lemuria.org>
2002-06-13  1:44 ` Very large font size crashing X Font Server and Grounding Server to a Halt (was: remote DoS in Mozilla 1.0) Federico Sevilla III
2002-06-13  5:39   ` Very large font size crashing X Font Server and Grounding Server to Alan Cox
2002-06-13  5:57     ` rlimits and non overcommit (was: Very large font size ...) Federico Sevilla III
2002-06-13  6:11       ` Keith Owens
2002-06-13  9:25         ` rlimits and non overcommit Federico Sevilla III
2002-06-13  7:18   ` Very large font size crashing X Font Server and Grounding Server to a Halt (was: remote DoS in Mozilla 1.0) Matti Aarnio
2002-06-13 16:26   ` rjh
2002-06-14 13:50     ` Security Coordinator
2002-06-13 21:10   ` Matthew Wakeling
2002-06-13 22:33     ` Bernd Eckenfels [this message]
2002-06-13 17:17 Melchior FRANZ
2002-06-13 17:34 ` Billy O'Connor
2002-06-13 19:22   ` Very large font size crashing X Font Server and Grounding Server to a Halt Melchior FRANZ

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