Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754975AbYCJRXw (ORCPT ); Mon, 10 Mar 2008 13:23:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751158AbYCJRXo (ORCPT ); Mon, 10 Mar 2008 13:23:44 -0400 Received: from one.firstfloor.org ([213.235.205.2]:52682 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751020AbYCJRXo (ORCPT ); Mon, 10 Mar 2008 13:23:44 -0400 Date: Mon, 10 Mar 2008 18:25:33 +0100 From: Andi Kleen To: Hugh Dickins Cc: Andi Kleen , Christoph Lameter , Andrew Morton , Ingo Molnar , KOSAKI Motohiro , Thomas Gleixner , LKML , Linus Torvalds , Bart Van Assche , Jeremy Fitzhardinge Subject: Re: quicklists confuse meminfo Message-ID: <20080310172533.GB7692@one.firstfloor.org> References: <20080309111456.GA21690@elte.hu> <20080309210000.C6DE.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080309120940.GA1695@elte.hu> <20080309123432.GA3267@elte.hu> <20080309114640.85c9c3eb.akpm@linux-foundation.org> <87myp68r88.fsf@basil.nowhere.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1001 Lines: 25 On Mon, Mar 10, 2008 at 05:19:32PM +0000, Hugh Dickins wrote: > On Mon, 10 Mar 2008, Andi Kleen wrote: > > Christoph Lameter writes: > > > > > > Zeroed pages however will not address the issue of having initialized pgd > > > (which seems to be what i386 needs). > > > > pgd is tiny on i386 PAE (4 * 16 bytes). Are you sure reinitializing that > > is a serious issue? ... > > It used to be tiny (32 aligned bytes), then 2.6.22's quicklist enlarged > that to a whole (lowmem) page. I think we were all too busy with other > stuff to protest loudly enough about that bloat. Interesting; I missed. Hmm, that might have been for Xen or Vmware too (which like some structures be page aligned) But I agree it is bloat in general. -Andi -- 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/