From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner+willy=40w.ods.org-S964805AbWDZSeO@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S964805AbWDZSeO (ORCPT <rfc822;willy@w.ods.org>);
	Wed, 26 Apr 2006 14:34:14 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964806AbWDZSeO
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Wed, 26 Apr 2006 14:34:14 -0400
Received: from omx2-ext.sgi.com ([192.48.171.19]:31434 "EHLO omx2.sgi.com")
	by vger.kernel.org with ESMTP id S964805AbWDZSeM (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Wed, 26 Apr 2006 14:34:12 -0400
Date: Wed, 26 Apr 2006 11:34:02 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
To: Andrew Morton <akpm@osdl.org>
cc: Jens Axboe <axboe@suse.de>, linux-kernel@vger.kernel.org, npiggin@suse.de,
       linux-mm@kvack.org
Subject: Re: Lockless page cache test results
In-Reply-To: <20060426111054.2b4f1736.akpm@osdl.org>
Message-ID: <Pine.LNX.4.64.0604261130450.19587@schroedinger.engr.sgi.com>
References: <20060426135310.GB5083@suse.de> <20060426095511.0cc7a3f9.akpm@osdl.org>
 <20060426174235.GC5002@suse.de> <20060426111054.2b4f1736.akpm@osdl.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, 26 Apr 2006, Andrew Morton wrote:

> OK.  That doesn't sound like something which a real application is likely
> to do ;)

A real application scenario may be an application that has lots of threads 
that are streaming data through multiple different disk channels (that 
are able to transfer data simultanouesly. e.g. connected to different 
nodes in a NUMA system) into the same address space.

Something like the above is fairly typical for multimedia filters 
processing large amounts of data.