linux-kernel - Re: larger default page sizes...

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Message-Id: <20080325.162244.61337214.davem@davemloft.net>
Date:	Tue, 25 Mar 2008 16:22:44 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	clameter@....com
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linux-ia64@...r.kernel.org, torvalds@...ux-foundation.org
Subject: Re: larger default page sizes...

From: Christoph Lameter <clameter@....com>
Date: Tue, 25 Mar 2008 10:48:19 -0700 (PDT)

> On Mon, 24 Mar 2008, David Miller wrote:
> 
> > There are ways to get large pages into the process address space for
> > compute bound tasks, without suffering the well known negative side
> > effects of using larger pages for everything.
> 
> These hacks have limitations. F.e. they do not deal with I/O and 
> require application changes.

Transparent automatic hugepages are definitely doable, I don't know
why you think this requires application changes.

People want these larger pages for HPC apps.
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