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From: Rik van Riel <riel@redhat.com>
To: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: Christoph Lameter <clameter@sgi.com>,
	Aubrey Li <aubreylee@gmail.com>,
	Nick Piggin <nickpiggin@yahoo.com.au>,
	Robin Getz <rgetz@blackfin.uclinux.org>,
	"Henn, erich, Michael" <Michael.Hennerich@analog.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] Limit the size of the pagecache
Date: Wed, 24 Jan 2007 23:45:50 -0500	[thread overview]
Message-ID: <45B835FE.6030107@redhat.com> (raw)
In-Reply-To: <45B82F41.9040705@linux.vnet.ibm.com>

Vaidyanathan Srinivasan wrote:

> In my opinion, once a
> file page is mapped by the process, then it should be treated at par
> with anon pages.  Application programs generally do not mmap a file
> page if the reuse for the content is very low.

Why not have the VM measure this, instead of making wild
assumptions about every possible workload out there?

There are a few databases out there that mmap the whole
thing.  Sleepycat for one...

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.

  reply	other threads:[~2007-01-25  4:53 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-24  0:49 Christoph Lameter
2007-01-24  2:53 ` KAMEZAWA Hiroyuki
2007-01-24  3:01   ` Christoph Lameter
2007-01-24  5:47   ` Aubrey Li
2007-01-24  3:00 ` Nick Piggin
2007-01-24  3:14   ` Christoph Lameter
2007-01-24  3:51     ` Aubrey Li
2007-01-24  4:03       ` Nick Piggin
2007-01-26 10:27         ` Andrew Morton
2007-01-24  3:13 ` KAMEZAWA Hiroyuki
2007-01-24  4:30   ` Christoph Lameter
2007-01-24  5:15     ` KAMEZAWA Hiroyuki
2007-01-25  0:32       ` KAMEZAWA Hiroyuki
2007-01-25  2:41         ` Christoph Lameter
2007-01-25  3:12           ` KAMEZAWA Hiroyuki
2007-01-25  4:28             ` Rik van Riel
2007-01-25  5:19               ` KAMEZAWA Hiroyuki
2007-01-25  5:40                 ` Rik van Riel
2007-01-25  6:00                   ` KAMEZAWA Hiroyuki
2007-01-26 10:29       ` Andrew Morton
2007-01-26 18:01         ` KAMEZAWA Hiroyuki
2007-01-24  7:04 ` Vaidyanathan Srinivasan
2007-01-24  7:55 ` Peter Zijlstra
2007-01-24 12:50   ` Nick Piggin
2007-01-24 12:58     ` Peter Zijlstra
2007-01-24 14:58     ` Christoph Lameter
2007-01-24 20:06       ` Erik Andersen
2007-01-25  2:40         ` Christoph Lameter
2007-01-25  8:07           ` Vaidyanathan Srinivasan
2007-01-24 14:22   ` Aubrey Li
2007-01-24 14:56     ` Peter Zijlstra
2007-01-25  2:27       ` Aubrey Li
2007-01-24 12:33 ` Vaidyanathan Srinivasan
2007-01-24 14:56   ` Christoph Lameter
2007-01-25  4:17     ` Vaidyanathan Srinivasan
2007-01-25  4:45       ` Rik van Riel [this message]
2007-01-25  5:49         ` Vaidyanathan Srinivasan
2007-01-25 16:07           ` Rik van Riel
2007-01-25 17:57             ` Balbir Singh
2007-01-25  6:35       ` Aubrey Li
2007-01-25  6:47         ` Christoph Lameter
2007-01-25  7:49         ` Vaidyanathan Srinivasan
2007-01-25  4:18 ` Rik van Riel
2007-01-25  6:42 Al Boldi
2007-01-25  8:24 ` Vaidyanathan Srinivasan
2007-01-25 10:29   ` Peter Zijlstra
2007-01-25 11:23     ` Vaidyanathan Srinivasan
2007-01-25 11:57     ` Al Boldi
2007-01-25 11:57   ` Al Boldi
2007-01-25 18:37     ` Vaidyanathan Srinivasan
     [not found] <7GEEK-4lH-39@gated-at.bofh.it>
     [not found] ` <7GLdb-5Uz-13@gated-at.bofh.it>
     [not found]   ` <7GRix-7fU-1@gated-at.bofh.it>
     [not found]     ` <7GRLZ-7Uy-29@gated-at.bofh.it>
2007-01-25 14:51       ` Bodo Eggert

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