Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753897AbYCXVZm (ORCPT ); Mon, 24 Mar 2008 17:25:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750781AbYCXVZe (ORCPT ); Mon, 24 Mar 2008 17:25:34 -0400 Received: from mga11.intel.com ([192.55.52.93]:34040 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750723AbYCXVZd convert rfc822-to-8bit (ORCPT ); Mon, 24 Mar 2008 17:25:33 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.25,548,1199692800"; d="scan'208";a="539228661" X-MIMEOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: RE: larger default page sizes... Date: Mon, 24 Mar 2008 14:25:11 -0700 Message-ID: <1FE6DD409037234FAB833C420AA843ECE5B88C@orsmsx424.amr.corp.intel.com> In-reply-to: <20080324.133722.38645342.davem@davemloft.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: larger default page sizes... Thread-Index: AciN728eq6KPx3WhQqCUnzLsZqR4aQABXhUw References: <20080321.145712.198736315.davem@davemloft.net> <20080324.133722.38645342.davem@davemloft.net> From: "Luck, Tony" To: "David Miller" , Cc: , , , X-OriginalArrivalTime: 24 Mar 2008 21:25:12.0182 (UTC) FILETIME=[8B313160:01C88DF5] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 674 Lines: 18 > The memory wastage is just rediculious. In an ideal world we'd have variable sized pages ... but since most arcthitectures have no h/w support for these it may be a long time before that comes to Linux. In a fixed page size world the right page size to use depends on the workload and the capacity of the system. When memory capacity is measured in hundreds of GB, then a larger page size doesn't look so ridiculous. -Tony -- 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/