From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933413AbXCOHjf (ORCPT ); Thu, 15 Mar 2007 03:39:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933425AbXCOHjf (ORCPT ); Thu, 15 Mar 2007 03:39:35 -0400 Received: from smtp.osdl.org ([65.172.181.24]:42934 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933413AbXCOHje (ORCPT ); Thu, 15 Mar 2007 03:39:34 -0400 Date: Thu, 15 Mar 2007 00:39:16 -0800 From: Andrew Morton To: David Miller Cc: paulus@samba.org, clameter@sgi.com, linux-kernel@vger.kernel.org, ak@suse.com, holt@sgi.com, linux-ia64@vger.kernel.org, mpm@selenic.com Subject: Re: [QUICKLIST 0/6] Arch independent quicklists V1 Message-Id: <20070315003916.8a78dd0c.akpm@linux-foundation.org> In-Reply-To: <20070315.003118.41650094.davem@davemloft.net> References: <20070312.192616.63128242.davem@davemloft.net> <20070312.193211.30184040.davem@davemloft.net> <20070315002249.9e531578.akpm@linux-foundation.org> <20070315.003118.41650094.davem@davemloft.net> X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.19; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > On Thu, 15 Mar 2007 00:31:18 -0700 (PDT) David Miller wrote: > From: Andrew Morton > Date: Thu, 15 Mar 2007 00:22:49 -0800 > > > So... what would happen if sparc64 were to use neither quicklists nor > > slab? Just grab these pages from the page allocator and clear them? > > The page table allocator is heavier weight than the quicklists, > although obviously not as heavy weight as SLAB. Spose so, although only in the case where we go into the buddy lists, I hope. otoh, releasing a cache-hot page into the page allocator makes it available for other use. It'd be nice if you could run the numbers sometime, please - if it's OK then we can remove code...