Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760294AbYCYXWy (ORCPT ); Tue, 25 Mar 2008 19:22:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756043AbYCYXWq (ORCPT ); Tue, 25 Mar 2008 19:22:46 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:51446 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755685AbYCYXWp (ORCPT ); Tue, 25 Mar 2008 19:22:45 -0400 Date: Tue, 25 Mar 2008 16:22:44 -0700 (PDT) Message-Id: <20080325.162244.61337214.davem@davemloft.net> To: clameter@sgi.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, torvalds@linux-foundation.org Subject: Re: larger default page sizes... From: David Miller In-Reply-To: References: <20080324.144356.104645106.davem@davemloft.net> X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 840 Lines: 21 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/