From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933780AbXCMW0H (ORCPT ); Tue, 13 Mar 2007 18:26:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933781AbXCMW0H (ORCPT ); Tue, 13 Mar 2007 18:26:07 -0400 Received: from mx.chubb.wattle.id.au ([66.29.2.6]:3695 "EHLO mx.chubb.wattle.id.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933780AbXCMW0F (ORCPT ); Tue, 13 Mar 2007 18:26:05 -0400 X-Greylist: delayed 2334 seconds by postgrey-1.27 at vger.kernel.org; Tue, 13 Mar 2007 18:26:05 EDT Date: Wed, 14 Mar 2007 08:46:33 +1100 Message-ID: <87hcsoakau.wl%peterc@chubb.wattle.id.au> From: Peter Chubb To: Jeremy Fitzhardinge , ianw@gelato.unsw.edu.au Cc: Matt Mackall , David Miller , nickpiggin@yahoo.com.au, akpm@linux-foundation.org, clameter@sgi.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org In-Reply-To: <45F7194B.5080705@goop.org> References: <20070313200313.GG10459@waste.org> <45F706BC.7060407@goop.org> <20070313202125.GO10394@waste.org> <20070313.140722.72711732.davem@davemloft.net> <20070313211435.GP10394@waste.org> <45F7194B.5080705@goop.org> User-Agent: Wanderlust/2.15.5 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij~) APEL/10.6 MULE XEmacs/21.4 (patch 19) (Constant Variable) (x86_64-linux-gnu) X-Face: GgFg(Z>fx((4\32hvXq<)|jndSniCH~~$D)Ka:P@e@JR1P%Vr}EwUdfwf-4j\rUs#JR{'h# !]])6%Jh~b$VA|ALhnpPiHu[-x~@<"@Iv&|%R)Fq[[,(&Z'O)Q)xCqe1\M[F8#9l8~}#u$S$Rm`S9% \'T@`:&8>Sb*c5d'=eDYI&GF`+t[LfDH="MP5rwOO]w>ALi7'=QJHz&y&C&TE_3j! X-SA-Exim-Connect-IP: 220.237.9.178 X-SA-Exim-Rcpt-To: jeremy@goop.org, ianw@gelato.unsw.edu.au, mpm@selenic.com, davem@davemloft.net, nickpiggin@yahoo.com.au, akpm@linux-foundation.org, clameter@sgi.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: peterc@chubb.wattle.id.au Subject: Re: [QUICKLIST 0/4] Arch independent quicklists V2 X-SA-Exim-Version: 4.2.1 (built Tue, 09 Jan 2007 17:23:22 +0000) X-SA-Exim-Scanned: Yes (on mx.chubb.wattle.id.au) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Jeremy" == Jeremy Fitzhardinge writes: Jeremy> And do the same in pte pages for actual mapped pages? Or do Jeremy> you think they would be too densely populated for it to be Jeremy> worthwhile? We've been doing some measurements on how densely clumped ptes are. On 32-bit platforms, they're pretty dense. On IA64, quite a bit sparser, depending on the workload of course. I think that's mostly because of the larger pagesize on IA64 -- with 64k pages, you don't need very many to map a small object. I'm hoping IanW can give more details.