From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Date: Tue, 25 Mar 2008 23:22:44 +0000 Subject: Re: larger default page sizes... Message-Id: <20080325.162244.61337214.davem@davemloft.net> List-Id: References: <20080324.144356.104645106.davem@davemloft.net> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: clameter@sgi.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, torvalds@linux-foundation.org From: Christoph Lameter 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.