Date: Thu, 12 Jun 2003 22:07:03 -0400 (EDT)
From: Rik van Riel <riel@redhat.com>
To: David Schwartz <davids@webmaster.com>
cc: Muthian Sivathanu <muthian_s@yahoo.com>, <linux-kernel@vger.kernel.org>
Subject: RE: limit resident memory size
In-Reply-To: <MDEHLPKNGKAHNMBLJOLKOEBMDKAA.davids@webmaster.com>
Message-ID: <Pine.LNX.4.44.0306122206010.29919-100000@chimarrao.boston.redhat.com>
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On Thu, 12 Jun 2003, David Schwartz wrote:

> > I would like to limit the maximum resident memory size
> > of a process within a threshold, i.e. if its virtual
> > memory footprint exceeds this threshold, it needs to
> > swap out pages *only* from within its VM space.
> 
> 	Why? If you think this is a good way to be nice to other
> processes, you're wrong.

RSS limits are a good idea, provided that they are only
enforced when the system is low on memory.  Once the system
starts swapping and is into the "lots of disk IO" territory
anyway, it can be a good idea to have the processes that
exceed their RSS limit suffer more than the ones that don't.

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