From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756997AbYHUDJ7 (ORCPT ); Wed, 20 Aug 2008 23:09:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756622AbYHUDI4 (ORCPT ); Wed, 20 Aug 2008 23:08:56 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:57069 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756599AbYHUDIx (ORCPT ); Wed, 20 Aug 2008 23:08:53 -0400 Date: Wed, 20 Aug 2008 20:08:52 -0700 (PDT) Message-Id: <20080820.200852.193706487.davem@davemloft.net> To: holt@sgi.com Cc: cl@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, tokunaga.keiich@jp.fujitsu.com Subject: Re: [RFC][PATCH 0/2] Quicklist is slighly problematic. From: David Miller In-Reply-To: <20080821021332.GA23397@sgi.com> References: <20080820195021.12E7.KOSAKI.MOTOHIRO@jp.fujitsu.com> <48AC25E7.4090005@linux-foundation.org> <20080821021332.GA23397@sgi.com> 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 From: Robin Holt Date: Wed, 20 Aug 2008 21:13:32 -0500 > One problem I see is somebody got rid of the node awareness. We used > to not put pages onto a quicklist when they were being released from a > different node than the cpu is on. Not sure where that went. It was > done because of the trap page problem described here. NUMA awareness is one of the reasons I keep thinking about dropping quicklist usage on sparc64. Using SLAB/SLUB for the page table bits with appropriate constructor and destructor bits ought to be able to approximate the gains from avoiding the initialization for cached objects.