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Date: Mon, 25 Jun 2007 10:35:26 -0700
From: "Paul Menage" <menage@google.com>
To: "Vaidyanathan Srinivasan" <svaidy@linux.vnet.ibm.com>
Subject: Re: [RFC] mm-controller
Cc: "Peter Zijlstra" <peterz@infradead.org>, balbir@linux.vnet.ibm.com,
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On 6/22/07, Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> wrote:
>
> Merging both limits will eliminate the issue, however we would need
> individual limits for pagecache and RSS for better control.  There are
> use cases for pagecache_limit alone without RSS_limit like the case of
> database application using direct IO, backup applications and
> streaming applications that does not make good use of pagecache.
>

If streaming applications would otherwise litter the pagecache with
unwanted data, then limiting their total memory footprint (with a
single limit) and forcing them to drop old data sooner sounds like a
great idea.

Paul